Dynamic mechanical analysis of prestrained Al{sub 2}O{sub 3}/Al metal matrix composite
Book
·
OSTI ID:109760
- Ecole Polytechnique de Montreal, Quebec (Canada). Dept. de Genie Mecanique
- MC-21, Inc., San Diego, CA (United States)
- Ecole de Technologie Superieure, Montreal, Quebec (Canada)
The effect of prestraining on the elastic modulus (E) and damping capacity (tan {phi}) of 10 and 20 volume percent (v/o) Al{sub 2}O{sub 3} particle reinforced composites has been investigated as function of temperature using Dynamic Mechanical Analysis. Both elastic modulus and damping capacity were found to increase with volume fraction. At 10 v/o the modulus and damping were relatively insensitive to prestrain. However, at 20 v/o it was observed that the modulus decreased with increasing prestrain while damping increased significantly. These results are discussed in terms of fraction of broken particles, particle size, and differential in thermal expansion between the matrix and Al{sub 2}O{sub 3} particulate.
- OSTI ID:
- 109760
- Report Number(s):
- CONF-950521--; ISBN 1-56676-313-4
- Country of Publication:
- United States
- Language:
- English
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