Dissipation of mechanical work and temperature rise in AS4/PEEK thermoplastic composite
- Author:
- Sun, C. T.
- Published:
- Oct 1, 1990.
- Physical Description:
- 1 electronic document
- Additional Creators:
- Georgiou, I.
- Access Online:
- hdl.handle.net
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
- Summary:
- The dissipated mechanical work per cycle of sinusoidal stress in the thermoplastic composite material AS4/PEEK was measured as a function of stress amplitude for fixed frequency and fiber orientation. The experimental result shows that the dissipated work per cycle is proportional to the square of the stress amplitude. Using the concept of the equivalent isotropic material, it is shown that the relaxation modulus satisfies a proportionality condition. Also, the rate of temperature rise due to sinusoidal stresses has been measured as a function of stress amplitude. The result shows that the rate of temperature rise is not proportional to the square of the stress amplitude.
- Collection:
- NASA Technical Reports Server (NTRS) Collection.
- Note:
- Document ID: 19900019362.
Accession ID: 90N28678.
NAS 1.26:186893.
CML-90-2.
NASA-CR-186893. - Terms of Use and Reproduction:
- No Copyright.
- Access Online:
- hdl.handle.net
View MARC record | catkey: 15684738