A Dynamic Photoelastic Analysis of Crack Branching.
Abstract
Previous dynamic photoelastic data on crack branching in edge-cracked Homalite-100 tension specimens were re-evaluated using the concept of averaged dynamic strain energy release rate. Dynamic stress intensity factors, K sub D, which were determined by dynamic photoelasticity, were used to compute the dynamic strain energy release rates G sub D. Average strain energy release rates, G sub D ave, were then obtained by dividing sums of the total dynamic strain energies released by the corresponding total surface areas of newly generated crack surfaces. This new evaluation of previous data indicates that crack branching occurred when G sub D ave > 2 G sub C where G sub C is the critical static strain energy release rate of the Homalite-100 sheets used in this investigation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1975
- Accession Number
- ADA014479
Entities
People
- Albert S. Kobayashi
- S. Mall
- W. B. Bradley
Organizations
- University of Washington