Coupling coefficients of glass/epoxy laminates under off-axis tensile conditions: Experimental verification. (October 2017)

• Record Type: Journal Article
• Authors: Cai, Deng'an; Wang, Xiaopei; Deng, Jian; Zhou, Guangming
• Is Part Of: Polymer testing. Volume 63(2017)
• Page Start: 334
• Page End: 341
• Publication Date: 2017-10
• Subjects: Composite laminate -- Coupling coefficient -- Compliance coefficient -- Off-axis tension; Polymers -- Testing -- Periodicals; Polymères -- Tests -- Périodiques; 620.1920287
• DOI: 10.1016/j.polymertesting.2017.08.041
• Languages: English
• ISSNs: 0142-9418

Abstract

Abstract: A comprehensive experimental study on the coupling coefficients of unidirectional (UD) and woven fabric glass/epoxy laminates under off-axis tensile loading was conducted in comparison with the theoretical prediction. The capability of the off-axis test to evaluate the elastic constants in the loading direction was reported. Four coupling coefficients were obtained from tests and discussed in comparison with the theoretical prediction. A further comparison of coupling compliance coefficients in compliance matrix was made in order to generalize the influence of off-axis angle on the compliance coefficients. The theoretical prediction agreed well with the experimental data. It is shown that non-monotonic and symmetry phenomena can be observed in the curves of the coupling and compliance coefficients. The results of this experimental study provide a data base of the coupling coefficients of glass/epoxy laminates for engineering application.