An Experimental and Analytical Program to Develop Crack Tip Fracture Criteria.
Abstract
A summary of progress on the development of instrumentation to determine with great accuracy the in-plane and out-of-plane surface deformations in the vicinity of a crack tip. The purpose is to establish a data base for a) guiding theoretical research in characterizing the deformation fields in the crack tip vicinity for fracture research and b) to provide factual information for the evaluation of currently proposed theories dealing with crack tip deformation. The experimental tools under development are (D. Post's) moire interferometry for the in-plane deformations and optical interferometry computer-based data processing unit, which is able to record and process in nearly real time fringe patterns into strain fields, and, for known - or estimated - constitutive behavior into stress fields. This report summarizes the state of developments and establishes that it is in phase with projected progress.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1986
- Accession Number
- ADA176853
Entities
People
- C. Schultheisz
- T. Ungsuwarungsri
- W. G. Knauss
Organizations
- California Institute of Technology