A method for evaluating the mechanical performance of thin-walled titanium tubes |
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Authors: | PM MacKenzie CA Walker J McKelvie |
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Affiliation: | aDepartment of Mechanical Engineering, University of Strathclyde, Glasgow G1 1XJ, Scotland, UK |
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Abstract: | A method which was developed to compare the stress–strain properties of three types of thin-walled, commercially pure titanium tubes is presented. The tubes were of types intended for use in large heat-exchanger applications and were to be subjected to significant plastic deformation during subsequent assembly processes. It had been anticipated that small differences in chemical composition and tube-drawing treatment would produce quite different characteristics. It is known that the properties of titanium can exhibit considerable degrees of anisotropy, especially for wrought products; although axial properties of the materials could be evaluated using standard test equipment and procedures, a novel testing system had to be designed to allow the circumferential properties to be assessed. Significant differences between tube types were observed and anisotropic material behaviour was apparent. |
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Keywords: | Anisotropic Commercially pure titanium Ductility Mechanical testing Hydraulic Tubes |
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