ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 9

R-Curve Round-Robin Program for ASTM Recommended Practice for R-Curve Determination (E 561)

Pearson, HS
Specialist EngineerMember of ASTM, Lockheed-Georgia Company, Marietta, GA

McCabe, DE
Senior ScientistMember of ASTM, Materials Engineering Associates, Lantham, MD

Abstract

A round-robin program sponsored by ASTM Task Group E24.01.02 on Crack Growth Resistance Curves was conducted to establish guidelines on variability for a Precision and Accuracy statement for ASTM Recommended Practice for R-Curve Determination (E 561). Two high strength aluminum alloys were tested by seven participants using the compact configuration specimen. The results of these tests are summarized herein, and a Precision and Accuracy section given along with variability at four levels of effective crack growth.

Keywords:
fracture, fracture testing, toughness, toughness testing, R-curves, stress intensity, crack growth resistance, plane stress fracture toughness

Paper ID: JTE11261J
DOI: 10.1520/JTE11261J
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