Research paperThermally coupled constitutive relations of thermoelastic materials and determination of their material constants based on digital image correlation with a laser engraved speckle pattern
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Highlights•New thermally coupled constitutive relations are theoretically obtained.•A high temperature measuring system is designed.•A novel laser engraving technique is used in high temperature testing.•Digital image correlation method is used to obtain mechanical properties.•Mechanical properties are obtained as a function of temperature.•Theoretical deformations are in good agreement with experimental results.

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