SEDL / STP / STP877-EB / STP32891S

Automated Technique for R-Curve Testing and Analysis

Jolles, M
Head, Fracture Mechanics Section, Naval Research Laboratory, Washington, DC,

Pages: 12    Published: Jan 1985

Download this paper for $25 PDF (196K)          View License Agreement
Abstract

The crack growth resistance curve (R-curve) appears to be a viable approach to elastic-plastic fracture analysis. An automated technique for R-curve testing and analysis provides the opportunity to enhance accuracy and resolution while reducing variability due to influences of the test operator and data analyst. A microcomputer-based test control, data acquisition, and analysis system is described. Details of the test hardware, procedures utilized for the conduct of R-curve experiments, and methods for the analysis of the data are presented. The results demonstrate the quality and reproducibility obtained by the technique.