An automatic tensile test measurement system for miniature specimens

The development of an automatic measurement system for measuring the Young’s modulus of a miniature specimen has been described. Tests of the system on gold line and copper specimens of different sizes are shown. The reliability and accuracy of the self-designed measurement system is assured by comparing the results obtained by an MTS device and a digital-image-correlation method. The good results obtained demonstrate the usefulness of the system. Although the size effect on the miniature specimens made of copper is not clearly found among the specimens used in the present study, it might be there for other sizes or different materials. This study provides a convenient and accurate measurement system to evaluate mechanical properties in small size materials.