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Proceedings Paper

Full-field measurement of dynamic stress by mechanoluminescence sensing film
Author(s): Chenshu Li; Chao-Nan Xu; Yusuke Imai; Nan Bu
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Paper Abstract

Full-field measurement of dynamic stress has been realized by coating the surface of the test object metal with a upgrade mechanoluminescence sensing film of SrAl2O4:Eu (SAOE). Mechanoluminescent materials are attractive smart materials that can emit light induced by mechanical deformation. The ML sensing film of SAOE has been developed to make possible to visualize dynamic stress. Consequently this visualization technique has been become a promising experimental technique to investigate full-field stress analysis. In this paper we report the applications of the SAO ML sensing film for full-field stress analysis in aluminum alloy 5052 samples. Using the SAOE ML sensing film, the stress concentration produced by a circular hole was observed with the naked eyes in real time and the two-dimensional stress distribution was quantitatively measured; the complex and dynamic Portevin-Le Chatelier (PLC) effect, known as instability during plastic deformation, has been visualized, and the propagating characteristics of PLC bands were precisely investigated.

Paper Details

Date Published: 21 October 2009
PDF: 7 pages
Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 749335 (21 October 2009); doi: 10.1117/12.845577
Show Author Affiliations
Chenshu Li, Kyushu Univ. (Japan)
Chao-Nan Xu, Kyushu Univ. (Japan)
National Institute of Advanced Industrial Science and Technology (Japan)
Japan Science and Technology Agency (Japan)
Yusuke Imai, National Institute of Advanced Industrial Science and Technology (Japan)
Nan Bu, National Institute of Advanced Industrial Science and Technology (Japan)


Published in SPIE Proceedings Vol. 7493:
Second International Conference on Smart Materials and Nanotechnology in Engineering
Jinsong Leng; Anand K. Asundi; Wolfgang Ecke, Editor(s)

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