Computational model considering effects of process and experimental verification of compressive strength of the X-cor sandwich

X. D. Dang; X. Jun; Y. G. Tan; Y. Li; Y. H. Yuan; J. B. Zhang

doi:10.1117/12.839379

25 August 2009 Computational model considering effects of process and experimental verification of compressive strength of the X-cor sandwich

X. D. Dang, X. Jun, Y. G. Tan, Y. Li, Y. H. Yuan, J. B. Zhang

Author Affiliations +

Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 73756G (2009) https://doi.org/10.1117/12.839379
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China

Abstract

In order to increase the through-thickness compressive strength, pultruded carbon fiber pins are inserted into the ploymethacrylimide core of the sandwich, and then the X-cor sandwich is obtained. During curing process of the X-cor sandwich the forming of the residual stress is described in detail, the analytical results are that carbon fiber Z-pins preserve residually tensile stress in the end. Considering the effects of the residual stress Z-pins are treated as beams upon an elastic foundation, then a sort of compressive strength computational model of the X-cor sandwich is proposed and the compressive strength is computed. The X-cor sandwich samples of different density, diameter and angle of Z-pins are made for compressive strength experiments. Through the contrast between experimental and computational results the computational model is verified. As Z-pin's diameter and density increase the residual stress increase. While as Z-pin's angle increases the residual stress decrease.

Citation Download Citation

X. D. Dang, X. Jun, Y. G. Tan, Y. Li, Y. H. Yuan, and J. B. Zhang "Computational model considering effects of process and experimental verification of compressive strength of the X-cor sandwich", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 73756G (25 August 2009); https://doi.org/10.1117/12.839379

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