• ASTM E2472-06

ASTM E2472-06

Standard Test Method for Determination of Resistance to Stable Crack Extension under Low-Constraint Conditions

ASTM International, 06/15/2006

Publisher: ASTM

File Format: PDF

$41.00$83.00


Published:15/06/2006

Pages:26

File Size:1 file , 860 KB

Note:This product is unavailable in Russia, Ukraine, Belarus

1.1 This standard covers the determination of the resistance to stable crack extension in metallic materials in terms of the critical crack-tip-opening angle (CTOA c ), c and/or the crack-opening displacement (COD), 5 resistance curve () . This method applies specifically to fatigue pre-cracked specimens that exhibit low constraint (crack-length-to-thickness and un-cracked ligament-to-thickness ratios greater than or equal to 4) and that are tested under slowly increasing remote applied displacement. The recommended specimens are the compact-tension, C(T), and middle-crack-tension, M(T), specimens. The fracture resistance determined in accordance with this standard is measured as c (critical CTOA value) and/or 5 (critical COD resistance curve) as a function of crack extension. Both fracture resistance parameters are characterized using either a single-specimen or multiple-specimen procedures. These fracture quantities are determined under the opening mode (Mode I) of loading. Influences of environment and rapid loading rates are not covered in this standard, but the user must be aware of the effects that the loading rate and laboratory environment may have on the fracture behavior of the material.

1.2 Materials that are evaluated by this standard are not limited by strength, thickness, or toughness, if the crack-length-to-thickness (a/B) ratio and the ligament-to-thickness (b/B) ratio are greater than or equal to 4, which ensures relatively low and similar global crack-front constraint for both the C(T) and M(T) specimens (, ) .

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses (English) are for information purposes only.

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 and health practices and determine the applicability of regulatory limitations prior to use.

More ASTM standard pdf

ASTM D5457-93(1998)

ASTM D5457-93(1998)

Standard Specification for Computing the Reference Resistance of Wood-Based Materials and Structural Connections for Load and Resistance Factor Design

$29.00 $58.00

ASTM E356-78(1996)

ASTM E356-78(1996)

Practices for Describing and Specifying the Spectrograph (Withdrawn 2001)

$29.00 $58.00

ASTM D7452-16

ASTM D7452-16

Standard Test Method for Evaluation of the Load Carrying Properties of Lubricants Used for Final Drive Axles, Under Conditions of High Speed and Shock Loading

$41.00 $83.00

ASTM E1658-96e1

ASTM E1658-96e1

Standard Terminology for Expressing Conclusions of Forensic Document Examiners

$25.00 $50.00