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Dynamic tensile testing of structural materials is becoming more and more important due to the need to obtain relevant data for components design mostly with the use of FEM in many industries such as automotive and power industries. The difference of the material behaviour under dynamic loading and quasi-static loading is that the dynamic strength or yield stress usually increases as the strain-rate increases. There is often a lack of experimental material or local properties of material are required. In many cases standard samples are too big and thus miniature samples based techniques have to be applied. The newly developed Micro-Tensile test technique (M-TT) is employed in this paper. M-TT specimen dimensions are based on Small Punch Test (SPT) sample volume of 8 mm in diameter and 0.5 mm in thickness. The following M-TT samples dimensions are usually used: thickness of 0.5 mm, width of 1.5 mm and parallel length of 3 mm. For precise strain measurement at high strain rate a high speed camera was used and the obtained record was evaluated by the ARAMIS system using the Digital Image Correlation method (DIC). The dynamic M-TTs were compared with dynamic tensile tests performed on standard samples and the results are presented here.
Keywords: Tensile test, Micro-Tensile Test, high strain rates, digital image correlation (DIC)© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.