Apr + Designation: E – 90 (Reapproved ). Standard Test Method for This test method is under the jurisdiction of ASTM Committee E-8 on. Futgue and . Properties and Testing of Materialsداوملا رابتخاو صاوخ ميحرلا نمحرلا لا مسب Determination of Fracture Toughness “Plane-S. This standard is issued under the fixed designation E ; the number immediately following the designation indicates the 1 This test method is under the jurisdiction of ASTM Committee E08 on Fatigue .. Note 2—Cutter tip angle 90° max.

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It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This identification is designated by a hyphenated code with the first letter s representing the direction normal to the crack plane and the second letter s aastm the expected direction of crack propagation.

Details of test apparatus, specimen configuration, and experimental procedure are given in the Annexes. Link to Active This link will always route to the current Active version of the standard. This strength ratio is a function of the maximum load the specimen can sustain, its initial dimensions and the yield strength of the material.

The details of the various specimen and test configurations are shown in Annexes A1 through A7 and A9. The first part gives general information concerning the recommenda- tions and requirements for KIc testing. Fatigue Crack Starter Notches.

Therefore, when K Ic is applied to the design of service components, differences between laboratory test and field conditions shall be considered. Originally published as E — 70 T.

Bend Specimen Loading Fixture.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The effect can be especially significant for specimens removed from as-heat treated or otherwise non-stress relieved stock, from weldments, from complex wrought parts, or from parts with intentionally induced residual stresses.

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Link to Active This link will always route to the current Active version of the standard. The second part is composed of annexes that give ast, displacement gage design, fatigue cracking procedures, and special requirements for the various specimen configurations covered by this method.

ASTM E – 90() Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials

Fatigue Precracking see also 1. Summary of Test Method. Active view current version of standard. Indications of residual stress include distortion during specimen machining, results that are specimen configuration dependent, and irregular fatigue precrack growth either excessive crack front curvature or out-of-plane growth. The present test method does not apply to such materials and the user is referred to Test Method E and E Note 1-Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle see 7.

General information and requirements common to all specimen types are listed as follows:. In addition, an annex is provided for the specific procedures to be followed in rapid-load plane-strain fracture toughness tests.

ASTM E Standard Test Method for Plane-Strain Fracture – Google Books

The first part gives general information concerning the recommendations and requirements for Ic testing. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

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. The orientation of the crack plane should be identified wherever possible in accordance with the following systems Likewise this test method does not apply to high toughness or high tearing-resistance materials whose failure is accompanied by appreciable amounts of plasticity.

Last previous edition E — In addition, the product form should be identified for example, straight-rolled plate, cross-rolled plate, pancake forging, etc.

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. This strength ratio is a function of the maximum load the specimen can sustain, its initial dimensions and the yield strength of the material.

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Standard and Alternative Specimen Configurations. 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. Work Item s – proposed revisions of this standard. The specification of K Ic values in relation to a particular application should signify that a fracture control study has been conducted for the component in relation to the expected loading and environment, and in relation to the sensitivity and reliability of the crack detection procedures that are to be applied prior to service and subsequently during the anticipated life.

The second part is composed of annexes that give the displacement gage design, fatigue cracking procedures, and special requirements for the various specimen configurations covered by this method. Specimen Size Validity Requirements.

Bend Specimen SE B. Work Item s – proposed revisions of this standard.

ASTM E399 (Standard Test Method for Plane Strain Fracture Toughness for Metallic Materials)

The first part gives general recommendations and requirements for K Ic testing. Historical Version s – view previous versions of standard.

It is the responsibility of the user of wstm standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Calculation and Interpretation of Results. K Ic may also be expected to rise with increasing ligament size. Crack extension under cyclic or sustained forces as by stress corrosion cracking or creep crack growth can be influenced by temperature and environment.

General information and requirements common to all specimen types are listed as follows: There is no standard test method for testing such thin materials. Therefore, compliance with the specified validity criteria of this test method is essential.