Thermal Cycling Behavior of Unidirectional and Cross-Plied P100 Gr/6061 Aluminum Composites
Abstract
The thermal strain response of as-cast samples of 40% P100 graphite fiber reinforced 6061 Al composites in the unidirectionally reinforced and the (0/90) cross-plied configuration was studied. Thermal strain hysteresis and residual plastic strain were observed, both changing with continued cycling. The compressive residual plastic strain is attributable primarily to creep deformation due to compressive residual stress in the matrix at elevated temperature. The role of matrix creep in the heating rate dependence of the strain response was studied by measuring strains under isothermal conditions in the absence of applied stresses. Damage mechanisms operative in the composites during thermal cycling, and the impact of ply constraint on the strain response were also evaluated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1992
- Accession Number
- ADA257506
Entities
People
- Anthony D. Wiest
Organizations
- Naval Postgraduate School