Characterization of sandwich panels for indentation and impact

International Symposium on Dynamic Deformation and Fracture of Advanced Materials 2013

物理学;材料科学

Shazly, M.^1 ; Bahei-El-Din, Y.^1 ; Salem, S.^1

Centre for Advanced Materials, British University in Egypt, Misr-Ismailia Road, El Sherouk City, Cairo, Egypt^1

关键词: Composite faces;    Core material;    High-velocity impact;    Impact loads;    Low velocity impact;    Quasi-static;    Quasi-static indentation;    Sandwich panel;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/451/1/012001/pdf
DOI  :  10.1088/1742-6596/451/1/012001

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The integrity of sandwich structures which are susceptible to impact may deteriorate significantly due to collapse of the core material and delamination of the face sheets. The integration of a thin polyurethane interlayer between the composite face sheet and foam core is known to protect the core material and substantially improve the resistance to impact. The objective of the present work is to characterize the response of sandwich panels, as well as that of the constituents to impact. In particular, the response of polyurethane and foam samples under a range of quasi-static and dynamic loading rates is determined experimentally. Furthermore, the response of sandwich panels to quasi-static indentation and low velocity impact is examined to quantify the extent of damage and how it is affected by the integration of polyurethane interlayers in their construction. This information is useful in the modelling of high velocity impact of sandwich panels; an effort which is currently underway. The results illustrate the benefit of using polyurethane interlayers within the construction of sandwich panels in enhancing their performance under quasi-static indentation and impact loads.