ASTM E399-90 PDF

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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K Ic may also be expected to rise with increasing ligament size.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. Compact Specimen C T. Historical Version s – view previous versions of standard. Calculation and Interpretation of Results. 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.

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:.

The orientation e399-90 the crack plane should asrm identified wherever possible in accordance with the following systems Therefore, when K Ic is applied to the design of service components, differences between laboratory test and field conditions shall be considered. Note 1-Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle see 7. The present test method does not apply to such materials and the user is referred to Test Method E and E Additional annexes are provided that give specific procedures for beryllium and rapid-force testing.

The first part gives general information concerning the recommendations and requirements for Ic testing. Active view current version of standard. Referenced Documents aastm separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

In addition, an annex is provided for the specific procedures to be followed in rapid-load plane-strain fracture toughness tests. This standard has been approved for use by agencies of the Department of Defense.

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This strength sstm is a function of the maximum load the specimen e399-990 sustain, its initial dimensions and the yield strength of the material. Specimen Size, Configurations, and Preparation see also 1. Ashm, compliance with the specified validity criteria of this test method is essential. It is the responsibility of the user of this standard to establish appro- priate safety and health practices sstm determine the applica- bility of regulatory limitations prior to use.

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

Work Item s – proposed revisions of this standard. Last previous edition E — Crack extension under cyclic or sustained forces as by stress corrosion cracking or creep crack growth can be influenced by temperature and environment.

Link to Active This link will always route to the current Active version of the 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.

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.

Enviado por Giulio flag Denunciar. Summary of Test Method.

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.

General information and requirements common to all specimen types are listed as follows: Bend Specimen Loading Fixture. In addition, the product form should be identified for example, straight-rolled plate, cross-rolled plate, pancake forging, etc. Guidance on testing elastic-plastic materials is given in Test Method E Details of test apparatus, specimen configuration, and experimental procedure are given in the Annexes. A number in parentheses indicates the year of last reapproval.

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Guide B provides supplementary guidelines for plane strain fracture toughness testing of aluminum alloy products for which complete stress relief is not practicable. In addition, an annex is provided for the specific procedures to be followed in rapid-load plane-strain fracture toughness tests. 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.

The first part gives general information concerning the recommenda- tions and requirements for KIc testing.

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

Bend Specimen SE B. 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. Crack Extension Beyond Starter Notch.

The first part gives general recommendations and requirements for K Ic testing. General information and requirements common to all specimen types are listed as follows: 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, from weldments, from complex wrought parts, or from parts with intentionally induced residual stresses. Current edition approved Nov.

Work Item asfm – proposed revisions of this standard.

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

The details of the various specimen and test configurations are shown in Annexes A1 through A7 and A9. Fatigue Precracking see also 1.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Fatigue Crack Starter Notches. Link to Active This link will always route to the current Active version of the standard. 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.