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Photothermoelastic analysis of thermal stresses in discs with eccentric holes

1970

The paper deals with thermal stresses that arise in discs with eccentric holes, such as are employed in the rotors of multi-stage gas turbines. The stress distribution was analysed by the photothermoelastic method. CR 39 sheets were used as the material and dry ice as the refrigerant. The effect of several geometric parameters on stress distribution, especially the influence of adjacent holes, was investigated by testing 32 configurations of discs. Curves that allow the determination of the peak stresses and optimum spacing of holes are given.

Gas turbinesMaterials sciencebusiness.industryThermalDry iceEccentricStructural engineeringComposite materialStress distributionbusinessJournal of Strain Analysis
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