Abstract
Young's modulus and Poisson's ratio of metal thin films were calculated by applying the digital image correlation technique that can measure the whole field displacement without contact. First, the program which can measure sub-pixel displacement was created and the accuracy of this program was checked using a precision stage. Next, the tension tests of aluminum alloy and steel were performed to obtain the displacement in tension. Elastic moduli of these materials were calculated based on the displacement measured from this method and the validity was confirmed by comparing these results with results of a strain rosette. Finally, the elastic moduli of electrodeposited copper and nickel film were calculated in the same manner. It was cleared that Young's modulus of metal films was quite small compared with bulk materials.
