硬質塩ビ板のVノッチ衝撃試験片形状とそのシャルピー衝撃値との関係

抄録

In this paper, the relations between Charpy impact strength (Absorbed energy/area under notch) and shape of V-notched test bar of unplasticized P.V.C. are described. The results obtained are summarized as follows:
(1) Charpy impact strengths are not varied by the deviation of the width, the thickness and the notch angle of test bar in the range of experiment.
(2) But they are varied by the deviation of the notch depth and the notch radius.
(3) The quantitative values of error of impact strength which are introduced by these deviations are shown on Table I.