



相对磁导率检测标准相关信息
GB/T 35690-2017 弱磁材料相对磁导率的测量方法
简介:
信息:ICS:29.030 CCS:K14 发布:2017-12-29 00:00:00.0 实施:2018-07-01 00:00:00.0
ASTM A772/A772M-00(2016) 使用正弦电流的材料的交流磁导率的标准测试方法
简介:
信息:ICS:29.030 CCS: 发布:2016-04-01 实施:
ASTM D5568-2008 微波频率下固体材料相对复介电常数和磁导率测量标准试验方法
简介:Design calculations for radio frequency (RF), microwave and millimetre-wave components require the knowledge of values of complex permittivity and permeability at operating frequencies. This test method is useful for evaluating small experimental batch or continuous production materials used in electromagnetic applications. Use this method to determine complex permittivity only (in non-magnetic materials) or both complex permittivity and permeability simultaneously.1.1 This test method covers a procedure for determining relative complex permittivity (relative dielectric constant and loss) and relative magnetic permeability of isotropic, reciprocal (non-gyromagnetic) solid materials. If the material is nonmagnetic, it is acceptable to use this procedure to measure permittivity only. 1.2 This measurement method is valid over a frequency range of approximately 100 MHz to over 20 GHz. These limits are not exact and depend on the size of the specimen, the size of rectangular waveguide transmission line used as a specimen holder, and on the applicable frequency range of the network analyzer used to make measurements. The practical lower and upper frequencies are limited by specimen dimension requirements (large specimens at low frequencies and small specimens at high frequencies). Being a non-resonant method, the selection of any number of discrete measurement frequencies in a measurement band would be suitable. Use of multiple rectangular waveguide transmission line sizes are required to cover this entire frequency range (100 MHz to 20 GHz). This test method can also be generally applied to circular waveguide test fixtures. The rectangular waveguide fixture is preferred over coaxial fixtures when samples have in-plane anisotropy or are difficult to manufacture precisely. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are in English units. The equations shown here assume an e+jx03C9;t harmonic time convention. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:17.220.01 (Electricity. Magnetism. General aspects CCS:A42 发布:2008 实施:
GB/T 11441.2-2011 通信和电子设备用变压器和电感器铁心片 第2部分:软磁金属叠片最低磁导率规范
简介:GB/T 11441的本部分规定了由GB/T 21219-2007定义的C2、E1、E3和E4类硅铁及镍铁合金制备的叠片的最低磁导率要求。这些要求更适用于GB/T 11441-1989所列出的叠片。本部分所规定的性能适用于在正弦磁通和频率为50Hz或60Hz下测试,且经过充分热处理的叠片。
信息:ICS:29.100.10 CCS:L17 发布:2011-12-30 实施:2012-07-01
ASTM D5856-2015 使用刚性壁压缩模式磁导率计测量多孔材料液压导电率的标准试验方法
简介: 4.1x00a0;This test method applies to one-dimensional, laminar flow of water within laboratory-compacted, porous materials such as soil. 4.2x00a0;The hydraulic conductivity of porous materials generally decreases with an increasing amount of air in the pores of the material. This test method applies to porous materials containing little or no air. The test method is designed to minimize the amount of air in the test specimen. However, this test method does not ensure complete saturation of the test specimen with water. In cases where it is essential to saturate the test specimen fully with water, the compacted specimen may be tested using Test Method D5084. 4.3x00a0;This test method applies to permeation of porous materials with water. Permeation with other liquids, such as chemical wastes, can be accomplished using procedures similar to those described in this test method. However, this test method is only intended to be used when water is the permeant liquid. 4.4x00a0;It is assumed that Darcy's law is valid and that the hydraulic conductivity is essentially unaffected by hydraulic gradient. The validity of Darcyx2019;s law may be evaluated by measuring the hydraulic conductivity of the specimen at three hydraulic gradients; if all measured values are similar (within 258201;%), then Darcyx2019;s law may be taken as valid. However, when the hydraulic gradient acting on a test specimen is changed, the state of stress will also change, and, if the specimen or pore fluid is compressible, the volume of the test specimen or pore fluid will change. Thus, some change in hydraulic conductivity may occur when the hydraulic gradient is altered, even in cases where Darcyx2019;s law is valid. 4.5x00a0;One potential problem with this method of testing is the possibility that water will flow along the interface between the test specimen and the compaction/permeameter ring. The problem tends to be of minimal significance for materials that swell when exposed to water (for example, compacted, clayey soils) but can be a very serious problem for materials that might tend to shrink and pull away from the walls of the permeameter. Test Method D5084 is recommended for any material that tends to shrink when exposed to the permeant liquid. 4.6x00a0;The correlation between results obtained with this test method and the hydraulic conductivities of in-place, compacted materials has not been fully investigated. Experience has sometimes shown that flow patterns in small, laboratory-prepared test specimens do not necessarily follow the same patterns on large field scales and that hydraulic conductivities measured on small test specimens are not necessarily the same as larger-scale values. Therefore, the results should be applied to field situations with caution and by qualified personnel. Note 1:x00a0;The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection......
信息:ICS:19.060 CCS: 发布:2015 实施:
ASTM D7449/D7449M-2008 使用同轴空气电缆测量微波频率下固体材料相对复合电容率和相对磁导率的标准试验方法
简介:Design calculations for radio frequency (RF), microwave and millimetre-wave components require the knowledge of values of complex permittivity and permeability at operating frequencies. This test method is useful for evaluating small experimental batch or continuous production materials used in electromagnetic applications. Use this method to determine complex permittivity only (in non-magnetic materials) or both complex permittivity and permeability simultaneously.1.1 This test method covers a procedure for determining relative complex permittivity (relative dielectric constant and loss) and relative magnetic permeability of isotropic, reciprocal (non-gyromagnetic) solid materials. If the material is nonmagnetic, it is acceptable to use this procedure to measure permittivity only. 1.2 This measurement method is valid over a frequency range of approximately 1 MHz to over 20 GHz. These limits are not exact and depend on the size of the specimen, the size of coaxial air line used as a specimen holder, and on the applicable frequency range of the network analyzer used to make measurements. The practical lower and upper frequencies are limited by specimen dimension requirements (large, thick specimens at low frequencies and small specimens at high frequencies). For a given air line size, the upper frequency is also limited by the onset of higher order modes that invalidate the dominant-mode transmission line model and the lower frequency is limited by the smallest measurable phase shift through a specimen. Being a non-resonant method, the selection of any number of discrete measurement frequencies in a measurement band would be suitable. The coaxial fixture is preferred over rectangular waveguide fixtures when broadband data are desired with a single sample or when only small sample volumes are available, particularly for lower frequency measurements 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The equations shown here assume an e+jx03C9;t harmonic time convention. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:17.220.20 CCS:A55 发布:2008 实施:
GB/T 14986-2008 高饱和、磁温度补偿、耐蚀、铁铝、恒磁导率软磁合金
简介:本标准规定了1J22、1J30、1J31、lJ32、1J33、1J38、1J36、1J116、lJ117、1J6、lJ12、IJ13、JJ16、1J66软磁合金的分类和代号、订货内容、尺寸、外形、重量及允许偏差、技术要求、表面质量、试验方法、检验规则、包装、标志和质量证明书等。本标准适用于1J22高饱和磁感应强度的铁钴钒软磁合金的冷轧带材、冷拉丝材、热轧(锻)扁材和棒材、光亮材;lJ30、1J31、1J32、lJ33和1J38磁分路补偿用磁温度补偿合金冷轧带材、棒材;1J36、lJ116和lJ117耐蚀软磁合金的热轧(锻)棒材及lJ116耐蚀软磁合金的冷轧带材;lJ6铁铝软磁合金的冷轧带材、热轧(锻)棒材;1J12、1J13、1J16铁铝软磁合金温轧带材;1J66在一定宽的磁场、温度和频率范围内磁导率基本不变的恒磁导率合金冷轧带材。
信息:ICS:77.140 CCS:H58;H59 发布:2008-05-13 实施:2008-11-01
ASTM D7449/D7449M-14 使用同轴空气线测量微波频率下固体材料相对复数介电常数和相对磁导率的标准测试方法
简介:
信息:ICS:17.220.20 CCS: 发布:2014-11-01 实施:
ASTM D7449/D7449M-2008e1 使用同轴空气电缆测量微波频率下固体材料相对复合电容率和相对磁导率的标准试验方法
简介:Design calculations for radio frequency (RF), microwave and millimetre-wave components require the knowledge of values of complex permittivity and permeability at operating frequencies. This test method is useful for evaluating small experimental batch or continuous production materials used in electromagnetic applications. Use this method to determine complex permittivity only (in non-magnetic materials) or both complex permittivity and permeability simultaneously.1.1 This test method covers a procedure for determining relative complex permittivity (relative dielectric constant and loss) and relative magnetic permeability of isotropic, reciprocal (non-gyromagnetic) solid materials. If the material is nonmagnetic, it is acceptable to use this procedure to measure permittivity only. 1.2 This measurement method is valid over a frequency range of approximately 1 MHz to over 20 GHz. These limits are not exact and depend on the size of the specimen, the size of coaxial air line used as a specimen holder, and on the applicable frequency range of the network analyzer used to make measurements. The practical lower and upper frequencies are limited by specimen dimension requirements (large, thick specimens at low frequencies and small specimens at high frequencies). For a given air line size, the upper frequency is also limited by the onset of higher order modes that invalidate the dominant-mode transmission line model and the lower frequency is limited by the smallest measurable phase shift through a specimen. Being a non-resonant method, the selection of any number of discrete measurement frequencies in a measurement band would be suitable. The coaxial fixture is preferred over rectangular waveguide fixtures when broadband data are desired with a single sample or when only small sample volumes are available, particularly for lower frequency measurements 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The equations shown here assume an e+jx03C9;t harmonic time convention. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:17.220.20 (Measurement of electrical and magnetic CCS:K13 发布:2008 实施:
GB/T 15003-1994 恒磁导率合金技术条件
简介: 本标准适用于在一定宽的磁场、温度和频率范围内,磁导率基本不变的恒磁导率合金1J66冷轧带材。
信息:ICS:77.140.40 CCS:H58 发布:1994-04-04 实施:1994-05-01
ASTM D5568-14 使用波导测量微波频率的固体材料的相对复数介电常数和相对磁导率的标准测试方法
简介:
信息:ICS:17.220.01 CCS: 发布:2014-11-01 实施:
ASTM A772/A772M-00(2005) 使用正弦电流的材料的交流磁导率的标准测试方法
简介:
信息:ICS:29.030 CCS: 发布:2005-11-01 实施:
GB/T 5026-1985 软磁合金振幅磁导率测量方法
简介: 本标准采用伏-安法在室温(10~35℃)下测量由软磁合金(铁-镍)带材制备的环形试样的振幅磁导率μa。测量频率为60Hz至10kHz。
信息:ICS:29.040.10 CCS:H21 发布:1985-03-28 实施:1986-01-01
ASTM D7449/D7449M-2014 利用同轴空气线在微波频率下测量固体材料相对复电容率和相对磁导率的标准试验方法
简介: 5.1x00a0;Design calculations for radio frequency (RF), microwave, and millimetre-wave components require the knowledge of values of complex permittivity and permeability at operating frequencies. This test method is useful for evaluating small experimental batch or continuous production materials used in electromagnetic applications. Use this method to determine complex permittivity only (in non-magnetic materials), or both complex permittivity and permeability simultaneously. 1.1x00a0;This test method covers a procedure for determining relative complex permittivity (relative dielectric constant and loss) and relative magnetic permeability of isotropic, reciprocal (non-gyromagnetic) solid materials. If the material is nonmagnetic, it is acceptable to use this procedure to measure permittivity only. 1.2x00a0;This measurement method is valid over a frequency range of approximately 1 to over 208201;GHz. These limits are not exact and depend on the size of the specimen, the size of coaxial air line used as a specimen holder, and on the applicable frequency range of the network analyzer used to make measurements. The size of specimen dimension is limited by test frequency, intrinsic specimen electromagnetism properties, and the request of algorithm. For a given air line size, the upper frequency is also limited by the onset of higher order modes that invalidate the dominant-mode transmission line model and the lower frequency is limited by the smallest measurable phase shift through a specimen. Being a non-resonant method, the selection of any number of discrete measurement frequencies in a measurement band would be suitable. The coaxial fixture is preferred over rectangular waveguide fixtures when broadband data are desired with a single sample or when only small sample volumes are available, particularly for lower frequency measurements 1.3x00a0;The values stated in either SI units of in inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore each system shall be used independently of the other. Combining values from the two systems is likely to result in non conformance with the standard. The equations shown here assume an e+jx03c9;t harmonic time convention. 1.4x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:17.220.20 CCS: 发布:2014 实施:
ASTM A342/A342M-04 弱磁性材料磁导率的标准试验方法
简介:
信息:ICS:29.030 CCS: 发布:2004-10-01 实施:
T/CECA 71-2022 低磁导率纳米晶磁
简介:本文件规定了低磁导率纳米晶磁心(以下简称磁心)的命名方法、技术要求、试验方法、验收规则、标志、包装、运输及储存等。本文件适用于使用经过热处理加工后的纳米晶金属带材制成的低磁导率纳米晶磁心设计、制造和验收。
信息:ICS:29.100.10 CCS:C398 发布:2022-11-07 实施:2022-11-11
ASTM D5568-2014 利用波导在微波频率下测量固体材料相对复电容率和相对磁导率的标准试验方法
简介: 5.1x00a0;Design calculations for radio frequency (RF), microwave, and millimetre-wave components require the knowledge of values of complex permittivity and permeability at operating frequencies. This test method is useful for evaluating small experimental batch or continuous production materials used in electromagnetic applications. Use this method to determine complex permittivity only (in non-magnetic materials), or both complex permittivity and permeability simultaneously. 1.1x00a0;This test method covers a procedure for determining relative complex permittivity (relative dielectric constant and loss) and relative magnetic permeability of isotropic, reciprocal (non-gyromagnetic) solid materials. If the material is nonmagnetic, it is acceptable to use this procedure to measure permittivity only. 1.2x00a0;This measurement method is valid over a frequency range of approximately 100 MHz to over 40 GHz. These limits are not exact and depend on the size of the specimen, the size of rectangular waveguide transmission line used as a specimen holder, and on the applicable frequency range of the network analyzer used to make measurements. The size of specimen dimension is limited by test frequency, intrinsic specimen electromagnetism properties, and the request of algorithm. Being a non-resonant method, the selection of any number of discrete measurement frequencies in a measurement band would be suitable. Use of multiple rectangular waveguide transmission line sizes are required to cover this entire frequency range (100 MHz to 40 GHz). This test method can also be generally applied to circular waveguide test fixtures. The rectangular waveguide fixture is preferred over coaxial fixtures when samples have in-plane anisotropy or are difficult to manufacture precisely. 1.3x00a0;The values stated in SI units are to be regarded as the standard. The values given in parentheses are in inch-pound units and are included for information only. The equations shown here assume an e+jx03c9;t harmonic time convention. 1.4x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:17.220.01 CCS: 发布:2014 实施:
NF L54-002-081-2002 航空航天系列.光电连接件.试验方法.第513部分:磁导率
简介:
信息:ICS:49.060 CCS:V25 发布:2002-12-01 实施:2002-12-20
KS C IEC 60404-15-2022 磁性材料.第15部分:弱磁性材料相对磁导率的测定方法
简介:
信息:ICS: CCS: 发布:2022-07-29 实施:
DIN EN 60404-15-2013 磁性材料.第15部分:弱磁材料相对磁导率测定方法(IEC 60404-15-2012).德文版本EN 60404-15-2012
简介:
信息:ICS:29.030 CCS:L19 发布:2013-04 实施:2013-04-01
KS C IEC 60404-8-5-2002(2017) 磁性材料第8-5部分:单项材料规范规定机械性能和磁导率的薄钢板和钢带规范
简介:
信息:ICS:29.030 CCS: 发布:2002-09-28 实施:
ASTM D5568-22 用波导管测量微波频率下固体材料的相对复介电常数和相对磁导率的标准试验方法
简介:
信息:ICS:17.220.01 CCS: 发布:2022-03-15 实施:
NF C28-901-15-2013 磁性材料.第15部分:弱磁材料相对磁导率的测定方法
简介:
信息:ICS:17.220.20;29.030 CCS:K14 发布:2013-03-06 实施:2013-03-06
KS C IEC 60404-8-5-2002(2022) 磁性材料-第8-5部分:单项材料规范-具有规定机械性能和磁导率的钢板和钢带规范
简介:
信息:ICS:29.030 CCS: 发布:2002-09-28 实施:
ASTM D7449/D7449M-22 用同轴空气线测量微波频率下固体材料的相对复介电常数和相对磁导率的标准试验方法
简介:
信息:ICS:17.220.20 CCS: 发布:2022-03-15 实施:
BS EN 60404-15-2012 磁性材料. 弱磁性材料的相对磁导率的测定方法
简介:
信息:ICS:17.220.20;29.030 CCS:L19 发布:2012-12-31 实施:2012-12-31
EN 2591-513-2002 航空航天系列.光电连接元件的试验方法.第513部分:磁导率
简介:This standard specifies a method of verifying thatThe relative magnetic permeability of a test item is below a specified value.The method is suitable for low permeability values:i.e.relative magnetic permeability of 2,5or less.It shall be used together with EN 2591-100
信息:ICS:49.060 CCS: 发布:2002-06-01 实施:
BS PD IEC TR 63307-2020 噪声抑制片复相对磁导率和介电常数的测量方法
简介:
信息:ICS:29.100.10 CCS: 发布:2020-12-07 实施:2020-12-07
IEC 60404-15:2012 磁性材料 - 第15部分:测定磁性材料相对磁导率的方法
简介:
信息:ICS:29.030 CCS: 发布:2012-09-18 实施:
ASTM D5568-95 测量微波频率下固体材料的相对复介电常数和相对磁导率的标准试验方法
简介:
信息:ICS:17.220.01 CCS: 发布:2001-03-10 实施:
IEC TR 63307-2020 噪声抑制片复相对磁导率和介电常数的测量方法
简介:
信息:ICS:29.100.10 CCS: 发布:2020-11-27 实施:
IEC 60404-15-2012 磁性材料.第15部分:弱磁材料相对磁导率测定方法
简介:
信息:ICS:17.220.01;17.220.20;29.030 CCS:L19 发布:2012-09 实施:
ASTM D5568-01 测量微波频率下固体材料的相对复介电常数和相对磁导率的标准试验方法
简介:
信息:ICS:17.220.01 CCS: 发布:2001-03-10 实施:
IEC TR 63307:2020 噪声抑制片复相对磁导率和介电常数的测量方法
简介:
信息:ICS:29.100.10 CCS: 发布:2020-11-27 实施:
ASTM A342/A342M-04(2012) 弱磁性材料磁导率的标准试验方法
简介:
信息:ICS:29.030 CCS: 发布:2012-05-01 实施:
ASTM D5568-2001 微波频率下固体材料相对复介电常数和磁导率测量标准试验方法
简介:Design calculations for Radio Frequency (RF), microwave and millimeter-wave components require the knowledge of values of complex permittivity and permeability at operating frequencies. This test method is useful for evaluating batch type or continuous production of material for use in electromagnetic applications. It may be used to determine complex permittivity only or both complex permittivity and permeability simultaneously.1.1 This test method covers a procedure for determining relative complex permittivity (relative dielectric constant and loss index) and relative magnetic permeability of isotropic, reciprocal (nongyromagnetic) solid materials. If the material is nonmagnetic, this procedure may be used to measure permittivity only.1.2 This measurement method is valid over a frequency range of approximately 1 MHz to 50 GHz. These limits are not exact and depend on the size of the specimen, the size and type of transmission line used as a specimen holder, and on the applicable frequency range of the network analyzer used to make measurements. The lower frequency is limited by the smallest measurable phase shift through a specimen, and the upper frequency limit is determined by the excitation of higher-order modes that invalidates the dominant-mode transmission line model. Any number of discrete measurement frequencies may be selected in this frequency range. To achieve maximum measurement accuracy, use of different transmission line sizes and types may be required. For example, use of a 7-mm diameter coaxial geometry can provide for measurements from 1 MHz to 18 GHz. However, air gaps that exist between the specimen and the transmission line's conductors introduce errors that may necessitate the use of a larger diameter coaxial transmission line and a series of rectangular wave guides of different size to cover this frequency range.1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:17.220.01 (Electricity. Magnetism. General aspects CCS:A42 发布:2001 实施:
JB/T 13536-2018 电磁屏蔽吸波材料磁导率测试方法
简介:
信息:ICS:17.220.20 CCS:L87 发布:2018-07-04 实施:2019-05-01
ASTM A772/A772M-00(2011) 使用正弦电流的材料的交流磁导率的标准测试方法
简介:
信息:ICS:29.030 CCS: 发布:2011-05-01 实施:
ASTM A772/A772M-00 使用正弦电流的材料的交流磁导率的标准测试方法
简介:
信息:ICS:29.030 CCS: 发布:2000-10-10 实施:
DIN EN 60404-15-2018 磁性材料.第15部分:弱磁材料相对磁导率测定方法(IEC 60404-15-2012+A1-2016);德文版本EN 60404-15-2012+A1-2017
简介:This part of IEC 60404 specifies a solenoid method, a fluxmetric method, a magnetic moment method, a magnetic balance method and a permeability meter method for the determination of the relative magnetic permeability of feebly magnetic materials (including austenitic stainless steel). The methods given are for applied magnetic field strengths of between 5 kA/m and 100 kA/m.
信息:ICS:29.030 CCS:L19 发布:2018-0301 实施:2018-03-01
ASTM A772/A772M-00(2011)e1 使用正弦电流的材料的交流磁导率的标准测试方法
简介:
信息:ICS:29.030 CCS: 发布:2011-05-01 实施:
ASTM A772/A772M-2000(2011) 正弦电流用材料的交流磁导率的标准试验方法
简介:The permeability determined by this method is the impedance permeability. Impedance permeability is the ratio of the peak value of flux density (Bmax) to the assumed peak magnetic field strength (Hz) without regard to phase. As compared to testing under sinusoidal flux (sinusoidal B) conditions, the permeabilities determined by this method are numerically lower since, for a given test signal frequency, the rate of flux change (dB/dt) is higher. This test method is suitable for impedance permeability measurements at very low magnetic inductions at power frequencies (50 to 60 Hz) to moderate inductions below the point of maximum permeability of the material (the knee of the magnetization curve) or until there is visible distortion of the current waveform. The lower limit is a function of sample area, secondary turns, and the sensitivity of the flux-reading voltmeter used. At higher inductions, measurements of flux-generated voltages that are appreciably distorted mean that the flux has appreciable harmonic frequency components. The upper limit is given by the availability of pure sinusoidal current, which is a function of the power source. In addition, a large ratio (x2265;10) of the total series resistance of the primary circuit to the primary coil impedance is required. With proper test apparatus, this test method is suitable for use at frequencies up to 1 MHz. This test method is suitable for design, specification acceptance, service evaluation, quality control, and research use.1.1 This test method provides a means for determination of the impedance permeability (x03BC;z) of ferromagnetic materials under the condition of sinusoidal current (sinusoidal H) excitation. Test specimens in the form of laminated toroidal cores, tape-wound toroidal cores, and link-type laminated cores having uniform cross sections and closed flux paths (no air gaps) are used. The method is intended as a means for determining the magnetic performance of ferromagnetic strip having a thickness less than or equal to 0.025 in. [0.635 mm]. 1.2 This test method shall be used in conjunction with those applicable paragraphs in Practice A34/A34M. 1.3 The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this standard, SI units are shown in brackets except for the sections concerning calculations where there are separate sections for the respective unit systems. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:29.030 CCS:H21 发布:2000 实施:
NF G07-074-2016 纺织.亚麻纤维细度的测定.磁导率测量法
简介:La présente Norme internationale spécifie deux méthodes perméamétriques pour la détermination de la finesse des fibres de lin : une méthode de référence, à deux compressions, utilisant une éprouvette de fibres parallèles (chapitre 5);une méthode simplifiée, à une compression, utilisant une éprouvette de fibres disposées "au hasard" (chapitre 6);
信息:ICS:59.060.10 CCS:W30;W50 发布:2016-12-16 实施:2016-12-16
ASTM B966-2010 使用氮气测定粉末冶金(PM)轴承的磁导率的标准试验方法
简介:
信息:ICS:21.100.01 CCS: 发布:2010 实施:
ASTM A772/A772M-2000(2005) 正弦电流用材料的交流磁导率的标准试验方法
简介:The permeability determined by this method is the impedance permeability. Impedance permeability is the ratio of the peak value of flux density (Bmax) to the assumed peak magnetic field strength (Hz) without regard to phase. As compared to testing under sinusoidal flux (sinusoidal B) conditions, the permeabilities determined by this method are numerically lower since, for a given test signal frequency, the rate of flux change (dB/dt) is higher. This test method is suitable for impedance permeability measurements at very low magnetic inductions at power frequencies (50 to 60 Hz) to moderate inductions below the point of maximum permeability of the material (the knee of the magnetization curve) or until there is visible distortion of the current waveform. The lower limit is a function of sample area, secondary turns, and the sensitivity of the flux-reading voltmeter used. At higher inductions, measurements of flux-generated voltages that are appreciably distorted mean that the flux has appreciable harmonic frequency components. The upper limit is given by the availability of pure sinusoidal current, which is a function of the power source. In addition, a large ratio (x2265;10) of the total series resistance of the primary circuit to the primary coil impedance is required. With proper test apparatus, this test method is suitable for use at frequencies up to 1 MHz. This test method is suitable for design, specification acceptance, service evaluation, quality control, and research use.1.1 This test method provides a means for determination of the impedance permeability (181z) of ferromagnetic materials under the condition of sinusoidal current (sinusoidal H) excitation. Test specimens in the form of laminated toroidal cores, tape-wound toroidal cores, and link-type laminated cores having uniform cross sections and closed flux paths (no air gaps) are used. The method is intended as a means for determining the magnetic performance of ferromagnetic strip having a thickness less than or equal to 0.025 in. [0.635 mm].1.2 This test method shall be used in conjunction with those applicable paragraphs in Practice A34/A34M.1.3 The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this standard, SI units are shown in brackets except for the sections concerning calculations where there are separate sections for the respective unit systems. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:29.030 (Magnetic materials) CCS:H21 发布:2000 实施:
IEC 60404-15-2012+AMD1-2016 CSV  ;磁性材料第15部分:弱磁性材料相对磁导率的测定方法
简介:
信息:ICS:29.030 CCS: 发布:2016-12-05 实施:
ASTM B966-2010 使用氮气测定(PM)轴承的磁导率的标准试验方法
简介:In service, there is a space between a shaft and a self-lubricating PM bearing that contains an oil film when the bearing is operating properly. In the event the oil film is disrupted or fails to form the bearing will exhibit increased wear and possibly fail. Therefore the ability for oil to flow through the porosity of a PM bearing is critical to the performance of the bearing. The porosity of the bearing must be open to the surface and interconnected within the bearing. This allows the oil in a self-lubricating PM bearing to flow during operation to the space between the bearing and the shaft to form an oil film and protect the shaft from wear. The ability of a gas to flow through the bearing reflects the openness and interconnected properties of the porosity in the bearing. Data from this test can be used as an internal quality tool and can be reported to buyers of bearings. A number of other factors also affect the performance of the bearing and the movement of oil; factors such as the oil viscosity, operating temperature, load, shaft speed, surface area, surface finishes and others. This test provides information on only one property and cannot be the sole consideration in the design and testing of a bearing application.1.1 This test method covers the determination of the permeability of a PM bearing when subjected to pressurized nitrogen under controlled conditions. 1.2 The values stated in SI units are to be regarded as the standard with the exception of flow rate for which the cm3/min unit is the industry standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:21.100.01 CCS:J11 发布:2010 实施:
ASTM A772/A772M-2000(2016) 采用正弦电流的材料交流磁导率标准试验方法
简介: 4.1x00a0;The permeability determined by this method is the impedance permeability. Impedance permeability is the ratio of the peak value of flux density (Bmax) to the assumed peak magnetic field strength (Hz) without regard to phase. As compared to testing under sinusoidal flux (sinusoidal B) conditions, the permeabilities determined by this method are numerically lower since, for a given test signal frequency, the rate of flux change (dB/dt) is higher. 4.2x00a0;This test method is suitable for impedance permeability measurements at very low magnetic inductions at power frequencies (50 to 60 Hz) to moderate inductions below the point of maximum permeability of the material (the knee of the magnetization curve) or until there is visible distortion of the current waveform. The lower limit is a function of sample area, secondary turns, and the sensitivity of the flux-reading voltmeter used. At higher inductions, measurements of flux-generated voltages that are appreciably distorted mean that the flux has appreciable harmonic frequency components. The upper limit is given by the availability of pure sinusoidal current, which is a function of the power source. In addition, a large ratio (x2265;10) of the total series resistance of the primary circuit to the primary coil impedance is required. With proper test apparatus, this test method is suitable for use at frequencies up to 1 MHz. 4.3x00a0;This test method is suitable for design, specification acceptance, service evaluation, quality control, and research use. 1.1x00a0;This test method provides a means for determination of the impedance permeability (x03bc;z) of ferromagnetic materials under the condition of sinusoidal current (sinusoidal H) excitation. Test specimens in the form of laminated toroidal cores, tape-wound toroidal cores, and link-type laminated cores having uniform cross sections and closed flux paths (no air gaps) are used. The method is intended as a means for determining the magnetic performance of ferromagnetic strip having a thickness less than or equal to 0.025 in. [0.635 mm]. 1.2x00a0;This test method shall be used in conjunction with those applicable paragraphs in Practice A34/A34M. 1.3x00a0;The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this standard, SI units are shown in brackets except for the sections concerning calculations where there are separate sections for the respective unit systems. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this standard. 1.4x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of ......
信息:ICS:29.030 CCS: 发布:2000 实施:
IEC 60404-15-2012/AMD1-2016 修改件1.磁性材料.第15部分:弱磁性材料相对磁导率的测定方法
简介:
信息:ICS:29.030 CCS: 发布:2016-12-05 实施:
ASTM D5568-08 测量微波频率下固体材料的相对复介电常数和相对磁导率的标准试验方法
简介:
信息:ICS:17.220.01 CCS: 发布:2008-12-15 实施:
ASTM A772/A772M-2000 使用正弦电流测定材料的交流磁导率的标准试验方法
简介:1.1 This test method provides a means for determination of the impedance permeability (181z) of ferromagnetic materials under the condition of sinusoidal current (sinusoidal H) excitation. Test specimens in the form of laminated toroidal cores, tape-wound toroidal cores, and link-type laminated cores having uniform cross sections and closed flux paths (no air gaps) are used. The method is intended as a means for determining the magnetic performance of ferromagnetic strip having a thickness less than or equal to 0.025 in. [0.635 mm].1.2 This test method shall be used in conjunction with those applicable paragraphs in Practice A34/A34M.1.3 The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this standard, SI units are shown in brackets except for the sections concerning calculations where there are separate sections for the respective unit systems. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:29.030 (Magnetic materials) CCS: 发布:2000 实施:
IEC 60404-15:2012/AMD1:2016 修改件1.磁性材料.第15部分:弱磁性材料相对磁导率的测定方法
简介:
信息:ICS:29.030 CCS: 发布:2016-12-05 实施:
ASTM D7449/D7449M-08e1 使用同轴空气线测量微波频率下固体材料相对复数介电常数和相对磁导率的标准测试方法
简介:
信息:ICS:17.220.20 CCS: 发布:2008-11-15 实施:
ASTM A772/A772M-2000(2011)e1 正弦电流用材料的交流磁导率的标准试验方法
简介:The permeability determined by this method is the impedance permeability. Impedance permeability is the ratio of the peak value of flux density (Bmax) to the assumed peak magnetic field strength (Hz) without regard to phase. As compared to testing under sinusoidal flux (sinusoidal B) conditions, the permeabilities determined by this method are numerically lower since, for a given test signal frequency, the rate of flux change (dB/dt) is higher. This test method is suitable for impedance permeability measurements at very low magnetic inductions at power frequencies (50 to 60 Hz) to moderate inductions below the point of maximum permeability of the material (the knee of the magnetization curve) or until there is visible distortion of the current waveform. The lower limit is a function of sample area, secondary turns, and the sensitivity of the flux-reading voltmeter used. At higher inductions, measurements of flux-generated voltages that are appreciably distorted mean that the flux has appreciable harmonic frequency components. The upper limit is given by the availability of pure sinusoidal current, which is a function of the power source. In addition, a large ratio (x2265;10) of the total series resistance of the primary circuit to the primary coil impedance is required. With proper test apparatus, this test method is suitable for use at frequencies up to 1 MHz. This test method is suitable for design, specification acceptance, service evaluation, quality control, and research use.1.1 This test method provides a means for determination of the impedance permeability (x03BC;z) of ferromagnetic materials under the condition of sinusoidal current (sinusoidal H) excitation. Test specimens in the form of laminated toroidal cores, tape-wound toroidal cores, and link-type laminated cores having uniform cross sections and closed flux paths (no air gaps) are used. The method is intended as a means for determining the magnetic performance of ferromagnetic strip having a thickness less than or equal to 0.025 in. [0.635 mm]. 1.2 This test method shall be used in conjunction with those applicable paragraphs in Practice A34/A34M. 1.3 The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this standard, SI units are shown in brackets except for the sections concerning calculations where there are separate sections for the respective unit systems. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:29.030 (Magnetic materials) CCS:H21 发布:2000 实施:
IEC 60404-15:2012+AMD1:2016 CSV  ;磁性材料第15部分:弱磁性材料相对磁导率的测定方法
简介:
信息:ICS:29.030 CCS: 发布:2016-12-05 实施:
ASTM D7449/D7449M-08 使用同轴空气线测量微波频率下固体材料相对复数介电常数和相对磁导率的标准测试方法
简介:
信息:ICS:17.220.20 CCS: 发布:2008-11-15 实施:
BS 5884-1999 磁性材料.弱磁性材料的相对磁导率的测定方法
简介:This British Standard describes a solenoid method, a comparator method and a permeability meter mothod for the determination of the relative magnetic permeability of feebly magnetic materials (including austenitic stainless steel) in the relative magnetic permeability range 1.003 to 5. The methods given in this British Standard are for applied magnetic field strengths of between 5 kA/m and 100 kA/m.The solenoid method is the reference method.
信息:ICS:17.220.20 CCS:L19 发布:1999-12-15 实施:1999-12-15
IEC 60404-15 AMD 1-2016 磁性材料.第15部分:弱磁材料相对磁导率测定方法.修改件1
简介:
信息:ICS:17.220.01;29.030 CCS:L19 发布:2016-12 实施:
ASTM D5568-2008 微波频率下固体材料相对复介电常数和磁导率测量标准试验方法
简介:Design calculations for radio frequency (RF), microwave and millimetre-wave components require the knowledge of values of complex permittivity and permeability at operating frequencies. This test method is useful for evaluating small experimental batch or continuous production materials used in electromagnetic applications. Use this method to determine complex permittivity only (in non-magnetic materials) or both complex permittivity and permeability simultaneously.1.1 This test method covers a procedure for determining relative complex permittivity (relative dielectric constant and loss) and relative magnetic permeability of isotropic, reciprocal (non-gyromagnetic) solid materials. If the material is nonmagnetic, it is acceptable to use this procedure to measure permittivity only. 1.2 This measurement method is valid over a frequency range of approximately 100 MHz to over 20 GHz. These limits are not exact and depend on the size of the specimen, the size of rectangular waveguide transmission line used as a specimen holder, and on the applicable frequency range of the network analyzer used to make measurements. The practical lower and upper frequencies are limited by specimen dimension requirements (large specimens at low frequencies and small specimens at high frequencies). Being a non-resonant method, the selection of any number of discrete measurement frequencies in a measurement band would be suitable. Use of multiple rectangular waveguide transmission line sizes are required to cover this entire frequency range (100 MHz to 20 GHz). This test method can also be generally applied to circular waveguide test fixtures. The rectangular waveguide fixture is preferred over coaxial fixtures when samples have in-plane anisotropy or are difficult to manufacture precisely. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are in English units. The equations shown here assume an e+jx03C9;t harmonic time convention. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:17.220.01 (Electricity. Magnetism. General aspects CCS:A42 发布:2008 实施:
ASTM A342/A342M-99 弱磁性材料磁导率的标准试验方法
简介:
信息:ICS:29.030 CCS: 发布:1999-10-10 实施:
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