ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Off-axis creep recovery behavior after complete unloading during creep at a constantstress is examined for a unidirectional T800H/3631 carbon/epoxy composite laminate at hightemperature. Creep and creep recovery tests are performed on plain coupon specimens with fourkinds of fiber orientations: 10, 30, 45 and 90°. It is observed that the creep strain appeared at a highstress does not completely recover after full removal of the creep stress, indicating that anirrecoverable creep strain has developed under the prior constant stress loading. Variable stresscreep simulations are attempted using the modified kinematic hardening model for homogenizedanisotropic inelastic composites in which an accelerated change in kinematic hardening over acertain range of viscoplastic strain is considered. Comparison with experimental resultsdemonstrates that the proposed model can adequately describe the off-axis creep and creep recoverybehaviors of the unidirectional composite system under constant and variable stress conditions
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.65.pdf
Permalink