動画を用いた丸棒試験片の引張試験における表面ひずみ分布の連続計測と応力―ひずみ関係の検討

抄録

Non-contact and continuous measurement of surface displacement and surface strain distribution in circular shaft specimen during tensile test was investigated. Displacement distribution on the specimen surface was measured using digital image correlation (DIC) method based on a movie file taken during the test. Two cameras were used to measure displacement vertical to specimen surface. We considered correction method of surface strain measured by DIC using displacement vertical to surface. Surface strain during the tensile test was precisely measured and relation between stress and strain was investigated.