Abstract
In recent years, flexible materials with very high performance are used widely to establish cost-effective processing with regard to long-term performance and reliability and large deformation analysis is becoming increasingly more important in both analytical and technological interests of structural design (mechanical springs, various thin walled structures). In this study, a new and convenient mechanical testing method (Compression Column Method) is provided for measuring the Young’s modulus in a flexible multi-layered material. The method is based on a nonlinear deformation theory that takes into account large deformation behaviors (i.e., postbuckling behaviors) of multi-layered materials. Exact analytical solutions are obtained in terms of elliptic integrals. By just measuring the horizontal or the vertical displacement, each Young’s modulus in a thin flexible multi-layered material can be easily obtained. Measurements were carried out on a two-layered material (PVC: a high-polymer material + SUS: a stainless steel material). The results confirm that the new method is suitable for flexible multi-layered thin plates/rods. In the meantime, the new method can be applied widely to measure the Young’s modulus of thin layers formed by PVD, CVD, Coating (Graphite, Metal Oxide), Paint (Lacquer), Cladding, Lamination, and others.
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Acknowledgements
The author thanks to Mr. M. Hayashi, Meijo University, Japan, for assistance.
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© 2014 The Society for Experimental Mechanics, Inc.
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Ohtsuki, A. (2014). An Innovative Measuring Method of Young’s Modulus Using Postbuckling Behavior. In: Tandon, G., Tekalur, S., Ralph, C., Sottos, N., Blaiszik, B. (eds) Experimental Mechanics of Composite, Hybrid, and Multifunctional Materials, Volume 6. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-00873-8_29
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DOI: https://doi.org/10.1007/978-3-319-00873-8_29
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