SEDL / STP / STP1406-EB / STP10581S

Correlation Between Static Initiation Toughness KJC and Crack Arrest Toughness Kla 2024-T351 Aluminum Alloy

Wallin, K
Research professor, VTT Manufacturing Technology,

Pages: 18    Published: Jan 2002

Download this paper for $25 PDF (452K)          View License Agreement
Abstract

The Master Curve method, developed for brittle fracture initiation estimation, has enabled a consistent analysis of fracture initiation toughness data. The method has been modified to also describe crack arrest toughness. Here, this “crack arrest master curve” is further validated and used to develop a simple, but yet adequately accurate correlation between the two fracture toughness parameters. The correlation enables the estimation of crack arrest toughness from small Charpy-sized static fracture toughness tests.

If a more accurate description of the crack arrest toughness is required, it can either be measured experimentally or estimated from instrumented Charpy-V crack arrest load information.