Fracture Behavior of Boron Aluminum Composites at Room and Elevated Temperatures.
Abstract
This progress report describes the results of research work on the characterization of fracture behavior in boron/aluminum (B/Al) composites. Emphasis has been placed on the correlation between the observed failure modes and the deformation characteristics of center-notched B/Al composites, where particular attention has been given to the proper test procedure and analytical approach employed. The purpose of this work is not merely to generate and furnish quantitative data but also to discuss the appropriate methodology to be employed in characterizing a new composite material system. The investigation focused on the deformation characteristics, crack tip damage growth, fracture strength and notch sensitivity and the associated characterization methods. Special attention has been given to nondestructive evaluation of internal damage and damage growth, techniques such as acoustic emission and X-ray radiography. Microstructural studies using scanning electron microscopy and photomicrography were employed as well. A description of all experimental procedures and techniques is given, e.g. mechanical and nondestructive testing, and a summary of representative results is presented. The report includes a comparison between the experimental results and several of the existing basic analytical approaches, a correlation between the various testing techniques, together with an assessment of the effect of the experimental technique on the characterization of failure. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1980
- Accession Number
- ADA111006
Entities
People
- Jonathan Awerbuch
Organizations
- Drexel University