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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2014, Vol. 15 Issue (1): 61-67    DOI: 10.1631/jzus.A1300283
Mechanical Engineering and Mechanics     
Skin-core adhesion in high performance sandwich structures
Yi-ou Shen, Wesley Cantwell, Yan Li
School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China; Department of Aerospace Engineering, Khalifa University of Science, Technology and Research (KUSTAR), Abu Dhabi, UAE
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Abstract  The aim of this study is to characterize the interfacial fracture toughness of a micro-lattice core based sandwich structure from quasi-static to dynamic rates of loading. The modified three-point bend (MTPB) sandwich beam was used to characterize the interfacial properties of these sandwich structures. Dynamic tests were undertaken of up to 3 m/s using a purpose-built instrumented drop-weight impact tower. Data reduction was accomplished through the use of a compliance calibration procedure similar to that used for characterizing the delamination resistance of composites. The flexural properties of sandwich beams were investigated through three-point bend tests at a cross-head displacement rate of up to 3 m/s. A detailed examination of the impact region highlighted the failure processes in these systems and this was related to the data from the quasi-static flexural tests. The globalized deformation and energy absorption during progressive were also discussed.

Key words： Sandwich structure      Interfacial fracture toughness      Flexural property     
Received: 27 August 2013      Published: 03 January 2014
CLC:  TB3  
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Yi-ou Shen
Wesley Cantwell
Yan Li
Cite this article:

Yi-ou Shen, Wesley Cantwell, Yan Li. Skin-core adhesion in high performance sandwich structures. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2014, 15(1): 61-67.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1300283     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2014/V15/I1/61

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