平面应变断裂韧度检测标准平面应变断裂韧度检测标准-中析研究所检测

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平面应变断裂韧度检测标准相关信息

GB/T 4161-2007 金属材料平面应变断裂韧度K_IC试验方法
简介：本标准规定了缺口预制疲劳裂纹试样在承受缓慢增加裂纹位移力时测定均匀金属材料平面应变断裂韧度的方法。
信息：ICS：77.040.10 CCS：H22 发布：2007-09-11 实施：2008-02-01

GB/T 4161-1984 金属材料平面应变断裂韧度KIC试验方法
简介： 金属材料平面应变断裂韧度KIC试验方法
信息：ICS：77.040.10 CCS：H22 发布：1984-02-24 实施：1985-01-01

ASTM E399-2012e3 金属材料的线弹性平面应变断裂韧度KIc的标准试验方法
简介： 5.1x00a0;The property KIc determined by this test method characterizes the resistance of a material to fracture in a neutral environment in the presence of a sharp crack under essentially linear-elastic stress and severe tensile constraint, such that (1) the state of stress near the crack front approaches tritensile plane strain, and (2) the crack-tip plastic zone is small compared to the crack size, specimen thickness, and ligament ahead of the crack. 5.1.1x00a0;Variation in the value of KIc can be expected within the allowable range of specimen proportions, a/W and W/B. KIc may also be expected to rise with increasing ligament size. Notwithstanding these variations, however, KIc is believed to represent a lower limiting value of fracture toughness (for 28201;% apparent crack extension) in the environment and at the speed and temperature of the test. 5.1.2x00a0;Lower values of KIc can be obtained for materials that fail by cleavage fracture; for example, ferritic steels in the ductile-to-brittle transition region or below, where the crack front length affects the measurement in a stochastic manner independent of crack front constraint. The present test method does not apply to such materials and the user is referred to Test Method E1921 and E1820. Likewise this test method does not apply to high toughness or high tearing-resistance materials whose failure is accompanied by appreciable amounts of plasticity. Guidance on testing elastic-plastic materials is given in Test Method E1820. 5.1.3x00a0;The value of KIc obtained by this test method may be used to estimate the relation between failure stress and crack size for a material in service wherein the conditions of high constraint described above would be expected. Background information concerning the basis for development of this test method in terms of linear elastic fracture mechanics may be found in Refs (1) and (2). 5.1.4x00a0;Cyclic forces can cause crack extension at KI values less than KIc. Crack extension under cyclic or sustained forces (as by stress corrosion cracking or creep crack growth) can be influenced by temperature and environment. Therefore, when KIc is applied to the design of service components, differences between laboratory test and field conditions shall be considered. 5.1.5x00a0;Plane-strain fracture toughness testing is unusual in that there can be no advance assurance that a valid K Ic will be determined in a particular test. Therefore, compliance with the specified validity criteria of this test method is essential. 5.1.6x00a0; Residual stresses can adversely ......
信息：ICS：77.040.10 (Mechanical testing of metals) CCS：H22 发布：2012 实施：

ASTM E399-2012e2 金属材料的线弹性平面应变断裂韧度KIc的标准试验方法
简介： 5.1x00a0;The property KIc determined by this test method characterizes the resistance of a material to fracture in a neutral environment in the presence of a sharp crack under essentially linear-elastic stress and severe tensile constraint, such that (1) the state of stress near the crack front approaches tritensile plane strain, and (2) the crack-tip plastic zone is small compared to the crack size, specimen thickness, and ligament ahead of the crack. 5.1.1x00a0;Variation in the value of KIc can be expected within the allowable range of specimen proportions, a/W and W/B. KIc may also be expected to rise with increasing ligament size. Notwithstanding these variations, however, KIc is believed to represent a lower limiting value of fracture toughness (for 28201;% apparent crack extension) in the environment and at the speed and temperature of the test. 5.1.2x00a0;Lower values of KIc can be obtained for materials that fail by cleavage fracture; for example, ferritic steels in the ductile-to-brittle transition region or below, where the crack front length affects the measurement in a stochastic manner independent of crack front constraint. The present test method does not apply to such materials and the user is referred to Test Method E1921 and E1820. Likewise this test method does not apply to high toughness or high tearing-resistance materials whose failure is accompanied by appreciable amounts of plasticity. Guidance on testing elastic-plastic materials is given in Test Method E1820. 5.1.3x00a0;The value of KIc obtained by this test method may be used to estimate the relation between failure stress and crack size for a material in service wherein the conditions of high constraint described above would be expected. Background information concerning the basis for development of this test method in terms of linear elastic fracture mechanics may be found in Refs (1) and (2). 5.1.4x00a0;Cyclic forces can cause crack extension at KI values less than KIc. Crack extension under cyclic or sustained forces (as by stress corrosion cracking or creep crack growth) can be influenced by temperature and environment. Therefore, when KIc is applied to the design of service components, differences between laboratory test and field conditions shall be considered. 5.1.5x00a0;Plane-strain fracture toughness testing is unusual in that there can be no advance assurance that a valid K Ic will be determined in a particular test. Therefore, compliance with the specified validity criteria of this test method is essential. 5.1.6x00a0; Residual stresses can adversely ......
信息：ICS：77.040.10 (Mechanical testing of metals) CCS：H22 发布：2012 实施：

NF A03-180-2011 金属材料.平面应变断裂韧度的测定
简介：
信息：ICS：77.040.10 CCS：H22 发布：2011-04-01 实施：2011-04-09

ASTM E1221-2010 测定铁素体钢的平面应变裂纹止裂断裂韧度K_Ia 的标准试验方法
简介：In structures containing gradients in either toughness or stress, a crack may initiate in a region of either low toughness or high stress, or both, and arrest in another region of either higher toughness or lower stress, or both. The value of the stress intensity factor during the short time interval in which a fast-running crack arrests is a measure of the ability of the material to arrest such a crack. Values of the stress intensity factor of this kind, which are determined using dynamic methods of analysis, provide a value for the crack-arrest fracture toughness which will be termed KA in this discussion. Static methods of analysis, which are much less complex, can often be used to determine K at a short time (1 to 2 ms) after crack arrest. The estimate of the crack-arrest fracture toughness obtained in this fashion is termed Ka. When macroscopic dynamic effects are relatively small, the difference between KA and Ka is also small (1-4). For cracks propagating under conditions of crack-front plane-strain, in situations where the dynamic effects are also known to be small, KIa determinations using laboratory-sized specimens have been used successfully to estimate whether, and at what point, a crack will arrest in a structure (5, 6). Depending upon component design, loading compliance, and the crack jump length, a dynamic analysis of a fast-running crack propagation event may be necessary in order to predict whether crack arrest will occur and the arrest position. In such cases, values of KIa determined by this test method can be used to identify those values of K below which the crack speed is zero. More details on the use of dynamic analyses can be found in Ref (4). This test method can serve at least the following additional purposes: In materials research and development, to establish in quantitative terms significant to service performance, the effects of metallurgical variables (such as composition or heat treatment) or fabrication operations (such as welding or forming) on the ability of a new or existing material to arrest running cracks. In design, to assist in selection of materials for, and determine locations and sizes of, stiffeners and arrestor plates.1.1 This test method employs a side-grooved, crack-line-wedge-loaded specimen to obtain a rapid run-arrest segment of flat-tensile separation with a nearly straight crack front. This test method provides a static analysis determination of the stress intensity factor at a short time after crack arrest. The estimate is denoted Ka. When certain size requirements are met, the test result provides an estimate, termed KIa, of the plane-strain crack-arrest toughness of the material. 1.2 The specimen size requirements, discussed later, provide for in-plane dimensions large enough to allow the specimen to be modeled by linear elastic analysis. For conditions of plane-strain, a minimum specimen thickness is also required. Both requirements depend upon the crack arrest toughness and the yield strength of the material. A range of specimen sizes may therefore be needed, as specified in this test method. 1.3 If the specimen does not exhibit rapid crack propagation and arrest, K
信息：ICS：77.040.10 CCS：H11 发布：2010 实施：

ASTM E399-2005 金属材料的线弹性平面应变断裂韧度KIC的标准试验方法
简介：1.1 This test method covers the determination of fracture toughness (KIc) of metallic materials under predominantly linear-elastic, plane-strain conditions using fatigue precracked specimens having a thickness of 1.6 mm (0.063 in.) or greater subjected to slowly, or in special (elective) cases rapidly, increasing crack-displacement force. Details of test apparatus, specimen configuration, and experimental procedure are given in the Annexes.Note 18212;Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle (see 7.1) can be made using other types of specimens (1).179; There is no standard test method for such thin materials.1.2 This test method is divided into two parts. The first part gives general recommendations and requirements for KIc testing. The second part consists of Annexes that give specific information on displacement gage and loading fixture design, special requirements for individual specimen configurations, and detailed procedures for fatigue precracking. Additional annexes are provided that give specific procedures for beryllium and rapid-force testing.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：77.040.10 (Mechanical testing of metals) CCS：H22 发布：2005 实施：

KS B ISO 12737-2002(2012) 金属材料平面应变断裂韧度的测定
简介：
信息：ICS：77.040.10 CCS：发布：2002-11-07 实施：

HB 7572-1997 金属材料(人字形缺口)平面应变断裂韧度试验方法
简介：本标准规定了用两种形状的人字形缺口试样测定金属材料平面应变断袭韧度Kiv、Kivj、Kivm值的试验方法。　　本标准适用于室温（15～30℃）条件下测定金属材料的断袭韧度。
信息：ICS： CCS：V10 发布：1997-09-23 实施：1997-10-01

ASTM E399-90(1997) 金属材料平面应变断裂韧度 KIC试验方法
简介：
信息：ICS：49.025.01 CCS：发布：1997-01-01 实施：

WJ 2430-1997 金属材料平面应变动态断裂韧度Kid试验方法
简介：
信息：ICS： CCS：H22 发布：1997 实施：

HB 5142-1996 金属材料平面应变断裂韧度KIC试验方法
简介：本标准规定了测定金属材料平面应变断裂韧度的试验设备、试样及制备、试验程序和试验结果的处理。　　本标准适用于在室温15～35℃条件下，用厚度大于或等于6mm的带有疲劳裂纹的三点弯曲SE（B）、紧凑拉伸C（T）、C形拉伸A（T）和圆形紧凑拉伸DC（T）试样，测定金属材料平面应变断裂韧度Kic值。　　当由于试样尺寸不足而不能得到Kic时，还可按本标准规定计算试样强度比Rsx值。
信息：ICS： CCS：H22 发布：1996-09-13 实施：1997-01-01

CSN 42 0347-1974 金属材料．平面应变断裂韧度（KIC）的测试方法
简介：Zpracovatel: Státní v?zkumn? ústav materiálu, Praha Ing. Ji?í DokoupilPracovník ??adu pro normalizaci a mě?ení: Ing. P. Berounsk?
信息：ICS： CCS：发布：1974-5-2 实施：