PHOTOELASTIC SIMULATION OF A SEISMIC RADIATION SOURCE.
Abstract
A two phase photoelastic investigation of the radiation field surrounding a simulated seismic source was performed. In the first phase a method was developed for producing a shear fracture in a simulated shear fault in a urethane photoelastic plate model. The limited self-healing ability of fractures in urethane rubber was exploited in this phase of the investigation. High speed motion pictures of the shear fracture process indicated that a slip-stick mode of fracture occurred prior to the opening of a finite width crack. In the second phase of the investigation, strobelasticity was employed to study the radiation pattern after shear impact. The isoclinic analysis and the derived stress trajectories indicated that both dilatational and distortional waves were present and also indicated their propagation directions and relative velocities. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 15, 1964
- Accession Number
- AD0610515
Entities
People
- Herbert Becker
- Ralph Papirno