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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The second part consists of Annexes that give specific information on displacement gage and loading fixture design, special requirements for individual specimen asrm, and detailed procedures for fatigue precracking. 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.
General information and requirements common to all specimen types are listed as follows: Bend Specimen Loading Fixture. 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. Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle see 7. Guide B provides supplementary guidelines for plane strain fracture toughness testing of aluminum alloy products for which complete stress relief is not practicable.
Note 1-Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle see 7. Additional annexes are provided that give specific procedures for beryllium and rapid-force testing.
Enviado asym Giulio flag Denunciar. Current edition approved Nov. 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.
General information and requirements common to all e399-90 types are listed as follows:. E — 90 Reapproved Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials1 This standard is issued under the fixed designation E ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.
It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Bend Specimen SE Adtm. It is the responsibility of the astj of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Fatigue Precracking see also 1. Crack Extension Beyond Starter Notch.
Standard and Alternative Specimen Configurations.
Work Item s – proposed revisions of this standard. This strength ratio is a function of xstm maximum load the specimen can sustain, its initial dimensions and the yield strength of the material. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A number in parentheses indicates the year of last reapproval.
ASTM E Standard Test Method for Plane-Strain Fracture – Google Books
In addition, an annex is provided for the specific procedures to be followed in rapid-load plane-strain fracture toughness tests. General information and requirements common to all specimen types are listed as follows: The details of the various specimen and test configurations are shown in Annexes A1 through A7 and A9. The first part gives general recommendations and requirements for K Ic testing. There is no standard test method for testing such thin materials.
Compact Specimen Loading Clevis. This standard has been approved for use by agencies of the Department of Defense. A superscript epsilon e indicates an editorial change since the last revision or reapproval. The values given in parentheses are for information only. Therefore, compliance with the specified validity criteria of this test method is essential. Details of test apparatus, specimen configuration, and experimental procedure are given in the Annexes.
Apparatus see also 1. Work Item s – proposed revisions of this standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Guidance on testing elastic-plastic materials is given in Test Method E Link to Active This link will always route to the current Active version of the standard.
ASTM E399 (Standard Test Method for Plane Strain Fracture Toughness for Metallic Materials)
Likewise this test method does not apply to high toughness or high tearing-resistance materials whose failure is accompanied by appreciable amounts of plasticity. The effect can be especially significant for specimens removed from as-heat treated or otherwise non-stress relieved stock, e39-990 weldments, from complex wrought parts, or from parts with intentionally induced residual stresses.
Summary of Test Method. E399–90 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. The first part gives general information concerning the recommenda- tions and requirements for KIc testing. Fatigue Crack Starter Notches.
The orientation of the crack plane should be identified wherever possible in accordance with the following systems Historical Version s – view previous versions of 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 designating the expected direction of crack propagation. 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.
In addition, e3399-90 product form should be identified for example, straight-rolled plate, cross-rolled plate, pancake forging, etc.