DAMAGE PROGRESSION AND FAILURE OF GLASS FABRIC COMPOSITES SUBJECTED TO TENSION TENSION AND TENSION/SHEAR COMBINED STRESSES/

Citation
T. Tanaka et al., DAMAGE PROGRESSION AND FAILURE OF GLASS FABRIC COMPOSITES SUBJECTED TO TENSION TENSION AND TENSION/SHEAR COMBINED STRESSES/, Journal of thermoplastic composite materials, 11(1), 1998, pp. 82-96
Citations number
5
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Materials Sciences, Composites
ISSN journal
0892-7057
Volume
11
Issue
1
Year of publication
1998
Pages
82 - 96
Database
ISI
SICI code
0892-7057(1998)11:1<82:DPAFOG>2.0.ZU;2-V
Abstract
Damage progression and final failure of plain woven glass-fabric-reinf orced composites subjected to tension/tension (or compression/tension and tension/shear combined stresses) were studied. Normal stresses (si gma(1) and sigma(2)) were applied to tubular specimens parallel to the material axes as well as shear stress (tau(12)). At tension/shear com bined stress state, the S-S relation up to failure was strongly affect ed by the biaxial stress ratio, alpha (=sigma(1)/tau(12)). However, in the tension/tension combined stress state, the S-S relation was not s trongly affected by the alternative biaxial stress ratio, beta (=sigma (1)/sigma(2)), although the stress combination at final failure change s with respect to beta. The S-S curve under tension/tension combined s tress is represented by two straight lines that intersect each other a t the knee point. The Tsai-Wu failure criterion fits well the experime ntal failure envelope under tension/shear combined stress, while the m aximum stress theory fits better than the Tsai-Wu failure criterion un der tension/tension (and compression/tension) combined stress, The ini tial yield stress condition under tension/tension combined stress was represented by a square that was based on the knee stresses at beta = 1/0 and 0/1. Internal damage and its accumulation do not affect the bi axial strength under tension/tension and tension/shear combined stress es.