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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The present test method does not apply to such materials and the user is referred to Test E3999-90 E and E Crack Extension Beyond Starter Notch. 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.

Link to Active This link will always route to the current Active version of the standard. Enviado por Giulio flag Denunciar. Crack extension under cyclic or sustained forces as by stress corrosion cracking or creep crack growth can be influenced by temperature and environment.

Compact Specimen C T. The e3399-90 part gives general recommendations and requirements for K Ic testing. NOTE 1—Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle see 7. There is no standard test method for testing such thin materials.

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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 appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

General information and requirements common to all specimen types are listed as follows:. Therefore, when K Ic is applied to the design of service asym, differences between laboratory test and field conditions shall be considered.

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

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.

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. Indications of residual stress include distortion during wstm machining, results that are specimen configuration dependent, and irregular fatigue precrack growth either excessive crack front curvature or out-of-plane growth.

The first part gives general information concerning the recommendations and requirements for Ic testing. Compact Specimen Loading Clevis. Calculation and Interpretation of Results.

This strength ratio is a function of the maximum load the specimen can sustain, its initial dimensions and the yield strength of the material. Specimen Size Validity Requirements. Summary of Test Method. E399-09 published as E — 70 T. Guide B provides supplementary guidelines for plane strain fracture toughness testing of aluminum alloy products for which complete stress relief is not practicable. Bend Specimen Loading Fixture. Fatigue Precracking KIc Specimens.

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

Standard and Alternative Specimen Configurations. Details of test apparatus, specimen configuration, and experimental procedure are given in the Annexes.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Last previous edition E — Fatigue Crack Starter Notches. 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 adtm stresses.

K Ic may also be expected to rise with qstm ligament size. Apparatus see also 1. This standard has been approved for use by agencies of the Department of Defense. Historical Version s – view previous versions of standard. 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.