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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Last previous edition E — Therefore, when K Ic is applied to the design of service components, differences between laboratory test and field conditions shall be considered. 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. The first part gives general information concerning the recommenda- tions and requirements for KIc testing. The first part gives general information concerning the d399-90 and requirements for Ic testing.
Enviado por Giulio flag Denunciar. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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. E — 90 Reapproved Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials1 This standard is issued under the fixed designation E3399-90 ; the number immediately following the designation indicates the year qstm original adoption or, in the case of revision, the year of last revision.
Summary of Test Method. Background information concerning the basis for development of this test method in asttm of linear elastic fracture mechanics may be found in Refs 1 and 2. Therefore, atsm with the specified validity criteria of this test method is essential.
ASTM E – 90() Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials
Note 1-Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle see 7. 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.
Work Item s – proposed revisions of this standard. Link to Active This e399-990 will always route to the current Active version of the standard.
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 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.
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. Current edition approved Nov.
Historical Version s – view previous versions of standard. NOTE 1—Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle see 7.
General information and requirements common to all specimen types are listed as follows: Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle see 7. Guidance on testing elastic-plastic materials is given in Test Method E 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.
Crack Extension Beyond Starter Notch. In addition, an annex is provided for the specific procedures to be followed in rapid-load plane-strain fracture toughness tests. In addition, the product form should be identified for example, straight-rolled plate, cross-rolled plate, pancake forging, etc. Bend Specimen SE B. Specimen Size Validity Requirements.
A number in parentheses indicates the year of last reapproval.
ASTM E399 (Standard Test Method for Plane Strain Fracture Toughness for Metallic Materials)
Calculation and Interpretation of Results. 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. Fatigue Precracking see also 1. Compact Specimen C T.
The orientation of the crack plane should be astn wherever possible in accordance with the following systems Originally published as E — 70 T.
Fatigue Crack Starter Notches.
This strength ratio is a function of the maximum load the specimen can sustain, its initial dimensions and the yield strength of the material. The values given in parentheses are for information only. Active view current version of standard.
Crack extension under cyclic or sustained forces as by stress corrosion cracking or creep crack growth can be influenced by temperature and environment. Additional annexes are provided that give specific procedures for beryllium and rapid-force testing.
E3999-0 of test apparatus, specimen configuration, and experimental procedure are given in the Annexes. This strength ratio is a function of the maximum load the specimen can sustain, its initial dimensions and the yield strength of the material.
This standard has been approved for use by agencies of the Department of Defense. The first part gives general recommendations and requirements for K Ic testing. Standard and Alternative Specimen Configurations.
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.