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ASTM E 1221 : 2012 : REV A

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Test Method for Determining Plane-Strain Crack-Arrest Fracture Toughness, KIa, of Ferritic Steels
Available format(s)

Hardcopy , PDF

Superseded date

12-19-2018

Language(s)

English

Published date

11-01-2012

1.1 This test method employs a side-grooved, crack-line-wedge-loaded specimen to obtain a rapid run-arrest segment of flat-tensile separation with a nearly straight crack front.

1.1This test method employs a side-grooved, crack-line-wedge-loaded specimen to obtain a rapid run-arrest segment of flat-tensile separation with a nearly straight crack front. This test method provides a static analysis determination of the stress intensity factor at a short time after crack arrest. The estimate is denoted Ka. When certain size requirements are met, the test result provides an estimate, termed KIa, of the plane-strain crack-arrest toughness of the material.

1.2The specimen size requirements, discussed later, provide for in-plane dimensions large enough to allow the specimen to be modeled by linear elastic analysis. For conditions of plane-strain, a minimum specimen thickness is also required. Both requirements depend upon the crack arrest toughness and the yield strength of the material. A range of specimen sizes may therefore be needed, as specified in this test method.

1.3If the specimen does not exhibit rapid crack propagation and arrest, Ka cannot be determined.

1.4The values stated in SI units are to be regarded as the standards. The values given in parentheses are provided for information only.

1.5This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.

Committee
E 08
DocumentType
Test Method
Pages
20
ProductNote
THIS STANDARD ALSO REFERS TO ASTM E8/E8M,E616
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM E 1823 : 2013 Standard Terminology Relating to Fatigue and Fracture Testing
ASTM F 3122 : 2014 Standard Guide for Evaluating Mechanical Properties of Metal Materials Made via Additive Manufacturing Processes

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