DYNAMIC STRAINS IN RODS MEASURED WITH BIREFRINGENT STRIPS,
Abstract
An experimental and analytical study is presented of the bonded birefringent strip as a means for determination of transient elastic deformations on the surface of opaque bodies. The particular problem investigated consists of a birefringent sheet attached to a metal rod in which a strain pulse is initiated by means of a small explosive charge. A method for analysis of the observed photoelastic fringe patterns is presented and is shown to give results in good agreement with those obtained in resistance wire strain gage tests. An approximate theoretical analysis of rod-sheet interaction effects is also presented and compared with experimental data. It has been concluded from this study that the birefringent strip is a useful tool in problems of dynamic experimental stress analysis. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1963
- Accession Number
- AD0424615
Entities
People
- Dan R. Robinson
- John T. Frasier
Organizations
- Ballistic Research Laboratory