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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Guide B provides supplementary guidelines for plane strain fracture toughness testing of aluminum alloy products for which complete stress relief is not practicable. There is no standard test method for testing such thin sstm. This standard has been approved for use by agencies of the Department of Defense. 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 atm 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.

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. General information and requirements common to all specimen types are listed as follows:.

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Calculation and Interpretation of Results.

The second part consists of Annexes that give specific information on displacement gage aastm loading fixture design, special requirements for individual specimen configurations, and detailed procedures for fatigue precracking.

E399–90 Size, Configurations, and Preparation see also 1. The present test method does not apply to such materials and the user is referred to Test Method E and E K Ic may also be expected to rise with increasing ligament size. Bend Specimen Loading Fixture. Note 1-Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle see 7.

Therefore, when K Ic is applied asrm the design of service components, differences between laboratory test and field conditions shall be considered. Link to Active This link will always e39-990 to the current Active version of the standard. Historical Version s – view previous versions of standard. Bend Specimen SE B. This strength ratio is a function of the maximum load the specimen can sustain, its initial dimensions and the yield strength of the material.

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

The orientation of the crack plane should be identified wherever possible asfm accordance axtm the following systems Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Current edition approved Nov. Fatigue Crack Starter Notches. Work Item s – proposed revisions of this standard.

Specimen Size Validity Requirements. In addition, the product form should be identified for example, straight-rolled plate, cross-rolled plate, pancake forging, etc.

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

Fatigue Precracking KIc Specimens. Last previous edition E — 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.

Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle see 7. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

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. Originally published as E — 70 T.

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. The details of the various specimen asym test configurations are shown in Annexes A1 through A7 and A9.

General information and requirements common to all specimen types are listed as follows: Therefore, compliance with the specified validity criteria of this test method is essential. In addition, an annex is provided for the specific procedures to be followed in rapid-load plane-strain fracture toughness tests.