A METHOD OF DYNAMIC FRINGE PREDICTION IN BIREFRINGENT VISCOELASTIC MATERIALS,
Abstract
Current research is directed toward a general verification of the validity of the use of linear viscoelastic materials in dynamic photoelastic testing. For the complete analysis of a twodimensional stress field by dynamic photoviscoelasticity, the questions of time-dependent optical axis orientation and the determination of the necessary third piece of information (such as thickness change) must be considered; however, the crucial initial concern is to establish a quantitatively valid method to account for the timedependent mechanical and optical properties characterizing viscoelastic materials. Hence, a situation that can be easily treated is a simple one-dimensional rod subjected to a step compression stress impact on the end. The verification will consist in comparing the theoretically predicted time-dependent fringe pattern with the experimental results for the same geometry and loading. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1963
- Accession Number
- AD0439620
Entities
People
- R. J. Arenz
Organizations
- California Institute of Technology