또한 시편의 변형률 측정을 위하여 시편 중앙에 변형률 게이지를 부착하고 재하속도 2 mm/min으로 시험을 진행하였다.
In addition, in order to measure the strain of the specimen, a strain gauge was attached to the center of the specimen, and the test was conducted at a loading speed of 2 mm/min.