ASTM E1221-12A(2018)e1
Standard Test Method for Determining Plane-Strain Crack-Arrest Fracture Toughness, KIa, of Ferritic Steels

Standard No.

ASTM E1221-12A(2018)e1

Release Date

2018

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E1221-12a

Latest

ASTM E1221-23

Scope

1.1 This test method employs a side-grooved, crack-linewedge-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. 1.2 The 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. 1.3 If the specimen does not exhibit rapid crack propagation and arrest, Ka cannot be determined. 1.4 The values stated in SI units are to be regarded as the standards. The values given in parentheses are provided for information only. 1.5 This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM E1221-12A(2018)e1 Referenced Document

• ASTM E1304 Standard Test Method for Plane-Strain (Chevron-Notch) Fracture Toughness of Metallic Materials*， 2020-05-15 Update
• ASTM E1823 Standard Terminology Relating to Fatigue and Fracture Testing
• ASTM E208 Standard Test Method for Conducting Drop-Weight Test to Determine Nil-Ductility Transition Temperature of Ferritic Steels
• ASTM E23 Standard Test Methods for Notched Bar Impact Testing of Metallic Materials
• ASTM E399 Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials
• ASTM E616 
• ASTM E8/E8M Standard Test Methods for Tension Testing of Metallic Materials*， 2024-01-01 Update

ASTM E1221-12A(2018)e1 history

• 2023 ASTM E1221-23 Standard Test Method for Determining Plane-Strain Crack-Arrest Fracture Toughness, KIa, of Ferritic Steels
• 2018 ASTM E1221-12a(2018) Standard Test Method for Determining Plane-Strain Crack-Arrest Fracture Toughness, KIa, of Ferritic Steels
• 2012 ASTM E1221-12a Standard Test Method for Determining Plane-Strain Crack-Arrest Fracture Toughness, KIa, of Ferritic Steels
• 2018 ASTM E1221-12A(2018)e1 Standard Test Method for Determining Plane-Strain Crack-Arrest Fracture Toughness, KIa, of Ferritic Steels
• 2012 ASTM E1221-12 Standard Test Method for Determining Plane-Strain Crack-Arrest Fracture Toughness, KIa, of Ferritic Steels
• 2010 ASTM E1221-10 Standard Test Method for Determining Plane-Strain Crack-Arrest Fracture Toughness, K_Ia, of Ferritic Steels
• 2006 ASTM E1221-06 Standard Test Method for Determining Plane-Strain Crack-Arrest Fracture Toughness, K_Ia, of Ferritic Steels
• 1996 ASTM E1221-96(2002) Standard Test Method for Determining Plane-Strain Crack-Arrest Fracture Toughness, K_Ia, of Ferritic Steels
• 1996 ASTM E1221-96 Standard Test Method for Determining Plane-Strain Crack-Arrest Fracture Toughness, K_Ia, of Ferritic Steels