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Proceedings Article

Toward triboluminescent sensor realization for SHM: statistical modeling of triboluminescent composites

[+] Author Affiliations
Tarik J. Dickens, David Olawale, Garrett Sullivan, Jolie Breaux, Okenwa O. I. Okoli, Ben Wang

The Florida State Univ. (USA)

Proc. SPIE 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011, 79810J (April 13, 2011); doi:10.1117/12.880536
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From Conference Volume 7981

  • Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011
  • Masayoshi Tomizuka
  • San Diego, California, USA | March 06, 2011

abstract

Triboluminescence (TL) is a mechanical and luminescent phenomena enabling damage sensing capabilities in materials. Depending on material compound, various excitation mechanisms result in emissions stimulated by rubbing or fracture, and give an indication of internal stress. Design of Experiments helped ascertain experimental knowledge of the multiphase composite system containing ZnS:Mn phosphors (0 - 40%) and vinyl ester resin (VER). This statistical approach proffered an empirical model used to validate triboluminescent production. Data shows concentration compiled with impact energy has a significant effect on the luminous intensity. Light intensity was measured by a photomultiplier tube and a photo-voltaic detector. The signal intensity range was determined for each. The photovoltaic detector acts as a low-light sensor in the range of 0.61 - 0.116 A for impacts less than 0.4 J. Microscopy revealed plates with reasonable dispersion and view of micro-structural inclusions. DMA indicates the inclusion of ZnS:Mn produces a moderate change in Young's modulus and thermo-kinetic properties.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Tarik J. Dickens ; David Olawale ; Garrett Sullivan ; Jolie Breaux ; Okenwa O. I. Okoli, et al.
"Toward triboluminescent sensor realization for SHM: statistical modeling of triboluminescent composites", Proc. SPIE 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011, 79810J (April 13, 2011); doi:10.1117/12.880536; http://dx.doi.org/10.1117/12.880536


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