A nondestructive method that evaluates the distribution of plastic strain using an ultrasonic wave would be useful for estimating a structure's state prior to crack development. The authors have proposed an ultrasonic wave measurement method by combining an EMAT and PVDF, in which the couplant is not needed if a contact-type PVDF sensor is used. This paper reports on the comparison and examination of adhesion-type and contact-type PVDF sensors combined with an EMAT for ultrasonic wave transmission. In today's society, there are many social infrastructures. Since these social infrastructures age, their maintenance and management are important for keeping their structures safe. Therefore, an advanced nondestructive testing technology that can detect deterioration damage of the structure will be needed in order to mend and reinforce the structure. A nondestructive evaluation method for the distribution of plastic strain that uses an ultrasonic wave would be useful for the on-site estimation of the state before