Fracto-Emission from Polymers
Abstract
Progress in the investigation of fracto-emission (FE) from polymers, crystalline materials, and interfaces are presented involving measurements of electron, photon, radiowave, and neutral atom and molecule emissions. We examine FE during the peeling of binder elastomer from single crystals of RDX; these emissions show FE features unique to adhesive failure. We present images of the photon emission during the peeling of adhesives. We also present mass spectroscopic measurements of the neutral particles emitted from the fracture of single crystals of MgO. In an appendix, we present results of simultaneous measurements of photon and electron emission from single crystal MgO. In addition, we present experiments on the consequences of simultaneous exposure of polymers to electron beam radiation and mechanical stress. In these studies we show that cracks can be initiated and/or propagated at stresses lower than critical stress values. The morphology of the stressed polymers plays a key role in the observed response.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 21, 1987
- Accession Number
- ADA183027
Entities
People
- J. T. Dickinson
Organizations
- Washington State University