Visualization of stress distribution using smart mechanoluminescence sensor

W. X. Wang, T. Matsubara, Y. Takao, Y. Imai, C. N. Xu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

18 Citations (Scopus)

Abstract

This paper describes a study on the application of smart mechanoluminescence (ML) sensor to structures for the visualization of stress distribution. Smart thin film sensor of ML material SrAl2O 4:Eu/polyme is coated on the surface of structure. The sensor will emit visual light when the structure is subjected to deformation. The light intensity is proportional to the strain energy density and the equivalent strain of the stressed material based on the energy viewpoint and experimental facts. The distribution of visual light intensity is recorded using CCD camera or ordinary camera. Then the stress distribution can be evaluated from the distribution of visual light intensity based on solid mechanics and the relationship between light intensity and equivalent strain. Compression test of a disk with coated SrAl2O4:Eu/epoxy film sensor is conducted to compare the visual light distribution with the stress distribution obtained from finite element analysis. Furthermore, tensile test of a rectangular specimen with a coated SrAl2O4:Eu/polymer film sensor is performed to demonstrate the relationship between visual light intensity and strain. Experimental and numerical results show that the smart sensor of ML material SrA2O4:Eu/porymer is an effective strain sensor to directly visualize the stress distribution in real time.

Original languageEnglish
Title of host publication6th International Forum on Advanced Material Science and Technology, IFAMST 2008
PublisherTrans Tech Publications Ltd
Pages169-174
Number of pages6
ISBN (Print)0878493352, 9780878493357
DOIs
Publication statusPublished - 2009
Event6th International Forum on Advanced Material Science and Technology, IFAMST 2008 - Hong Kong, China
Duration: Jun 12 2008Jun 14 2008

Publication series

NameMaterials Science Forum
Volume614
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other6th International Forum on Advanced Material Science and Technology, IFAMST 2008
CountryChina
CityHong Kong
Period6/12/086/14/08

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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