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A Comparison of Bending Properties for Cellular Core Sandwich Panels
Department of Industrial Engineering, University of Louisville, Louisville, USA
Department of Industrial & Systems Engineering, North Carolina State University, Raleigh, USA
Department of Industrial & Systems Engineering, North Carolina State University, Raleigh, USA
Department of Industrial & Systems Engineering, Rochester Institute of Technology, Rochester, USA
- 1 Department of Industrial Engineering, University of Louisville, Louisville, USA
- 2 Department of Industrial & Systems Engineering, North Carolina State University, Raleigh, USA
- 3 Department of Industrial & Systems Engineering, North Carolina State University, Raleigh, USA
- 4 Department of Industrial & Systems Engineering, Rochester Institute of Technology, Rochester, USA
Materials Sciences and Applications·Volume 04 (2013)·Pages 471–477·Published 29 July 2013·DOI10.4236/msa.2013.48057
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Abstract
In this study, various sandwich panel structures with different reticulate lattice core geometries were designed and then fabricated in titanium via the electron beam melting (EBM) process. Bending tests were performed on the titanium sam ples, and mechanical properties such as modulus, bending strength, and energy absorption were evaluated. Different failure mechanisms were observed, and it was found that sandwich structures with auxetic cores exhibited more homo geneous deflection and bending compliance compared with other structures. It was also demonstrated that properties of auxetic sandwich structures can be tailored using different cell structure geometries to suit the needs of a given design application. Furthermore, it was found that other 3D cellular sandwich structures can also exhibit high stiffness and strength, which is desirable in potential applications.
KeywordsAuxetic StructureCellular StructureSandwich PanelsElectron Beam MeltingBending Properties
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