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THE USE OF INFRA – RED DETECTORS FOR DETERMINATION OF THE FRACTURE MECHANICS PARAMETERS

L. Marsavina1,* , R. A. Tomlinson2

Affiliation

  1. niversity “Politehnica” Timisoara, Department Strength of Materials, Blv. M. Viteazul, Nr. 1, Timisoara 300222, Romania
  2. University of Sheffield, Department of Mechanical Engineering, Mappin Street, Sheffield S1 3JD, UK

Abstract

The utilisation of infra – red detectors is presented for determination the mixed mode stress intensity factors. The methodology involves the thermoelastic stress analysis using focal plane array thermal detectors, as DeltaTherm system. The range of the mixed mode stress intensity factors are obtined by fitting the equations describing the stress field around the crack tip, based on Muschelishvili’s approach to the thermoelastic data. The thermoelastic data is collected throughout the singular elastic stress field around a sharp notch inclined at 450 in a cruciform specimen subjected to biaxial loading..

Keywords

Infra – red detectors, Thermoelastic stress analysis, Stress intensity factor range.

Submitted at: Feb. 12, 2004
Accepted at: Dec. 6, 2004

Citation

L. Marsavina, R. A. Tomlinson, THE USE OF INFRA – RED DETECTORS FOR DETERMINATION OF THE FRACTURE MECHANICS PARAMETERS, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 4, pp. 1323-1329 (2004)