Analysis of Multiple Particle Impacts on Brittle Materials.
Summary rept. Jun 73-Jun 74,
BELL AEROSPACE TEXTRON BUFFALO NY
Pagination or Media Count:
While glass specimens behave in a characteristic manner when subjected to multiple collisions by glass beads, this behavior pattern cannot be associated with the erosion characteristics of all brittle or semi-brittle materials. On the other hand the general model is applicable to the erosion of any material which can be described in terms of a process of pit nucleation and growth and does not depend on the erosive environment. A demonstrated capability has been established in identifying the microscopic erosion mechanisms responsible for material removal and their relation to the microstructure of the material. Micromechanical models developed on the basis of the microscopic observations of the operative erosion mechanisms at various stages of the overall erosion process can then be incorporated into the general erosion model. This program is under development for describing the rain erosion of polymethylmethacrylate.
- Ceramics, Refractories and Glass