The Effects of Pressure on Fracture of a Rubbery Particulate Composite
Abstract
Rubbery particulate composites used in aerospace consist of a rubbery matrix with a large volume of embedded particles. Cracks may form in these composites and cause catastrophic failure of the component. If we can better predict their fracture, expensive components with questionable cracks may be usable. Research on fracture of these composites has been ongoing but has been inhibited by their unique behavior. The large deformations and the material inhomogeneity make using conventional experimental techniques and related analytical methods difficult, and matrix viscoelasticity requires careful consideration of strain rates and temperatures. Most experimental research on the fracture of rubbery particulate composites has been under ambient pressure conditions IA, although the effect of pressure is important since service conditions involve high pressure during critical portions of the component life. This work studies the pressure effect on a particulate composite. We tested the composite for fracture properties in a pressure chamber, and investigated the initiation of crack growth and the growth rate.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2000
- Accession Number
- ADA381385
Entities
People
- Chun Ting Liu
- Timothy C. Miller
Organizations
- Air Force Research Laboratory