Application of Dynamic Fracture Mechanics to Composites
Abstract
The report is divided into two parts, one covering the work on orthotropic composites and the other covering the work on isotropic metals. Each part consists of two chapters which stand alone, each having been submitted, accepted or prepared for publication in a referred journal. Separate bibliographies are given for parts 1 and 2. The work on composites has succeeded in producing fundamental, dynamic Green's functions solutions for cracks in orthotropic materials. These solutions may be used in calculating the stress intensity factor history on stationary cracks subjected to dynamic loading and may be very useful in predicting crack initiation under such conditions. Currently, experimental investigation of the application of these solutions to crack initiation in composites in two different configurations is beginning. It is expected that a report on that work will be submitted next year. The work on metals has been successful in experimentally demonstrating the usefulness of the dynamic stress intensity factor in predicting shear failure in metals under impact loads. This demonstration is predicted on the assumption that small scale yielding conditions exist in the experiments. The last chapter reflects an ongoing experimental investigation into the validity of that assumption. It seems to suggest that the assumption is correct, but further, more conclusive results are sought.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1998
- Accession Number
- ADA351990
Entities
People
- J. J. Mason
Organizations
- University of Notre Dame