ASTM E399-90 PDF

Tazilkree 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. Fatigue Precracking KIc Specimens. Work Item s — proposed revisions of this standard. Fatigue Crack Starter Notches.

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It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations awtm to use. 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 values given in parentheses are for information only. This strength ratio is a e of the maximum load the specimen can sustain, its initial dimensions and the yield strength of the material.

Link to Active This link will always route to the current Active version of the standard. 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. This strength ratio is a function astmm the maximum load the specimen can sustain, its initial dimensions and the yield strength of the material.

Therefore, when K Ic is applied to the design of service components, differences between laboratory test and field conditions shall be considered. General information and requirements common to e specimen types are listed as follows: A superscript epsilon e indicates an editorial change since the last revision or reapproval.

Additional annexes are provided that give specific procedures for beryllium and rapid-force testing. 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.

General information and requirements common to all specimen types are listed as follows:. General information and requirements common to all specimen types are listed as follows: 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. Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle see 7.

Fatigue Precracking see also 1. Calculation and Interpretation of Results. 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.

In addition, an annex is provided for the specific procedures to be followed in rapid-load plane-strain fracture toughness tests. Crack extension under cyclic or sustained forces as by stress corrosion cracking or creep crack growth can be influenced by temperature and environment. Summary of Test Method. NOTE 1—Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle see 7. Historical Version s — view previous versions of standard. This standard has been approved for use by agencies of the Department of Defense.

Active view current version of standard. The first part gives general information concerning the recommenda- tions and requirements for KIc testing. Current edition approved Nov. K Ic may also be expected to rise with increasing ligament size. The details of the various ast, and test configurations are shown in Annexes A1 through A7 and A9.

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ASTM E399-90 PDF

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations awtm to use. 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 values given in parentheses are for information only. This strength ratio is a e of the maximum load the specimen can sustain, its initial dimensions and the yield strength of the material. Link to Active This link will always route to the current Active version of the standard. 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. This strength ratio is a function astmm the maximum load the specimen can sustain, its initial dimensions and the yield strength of the material.

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