高密度ポリエチレンの二軸延伸加工に関する研究 : 第2報,HDPE二軸延伸材の各種方向の引張試験

概要

論文の詳細を見る
Polymers can be considered isotropic when they have not been cold worked, but they become highly anisotropic when plastically deformed. Biaxially drawn high density polyethylene (HDPE) sheets were prepared by forging them between a pair of opposing punches. Various rates of biaxial drawing were achieved by changing the aspect ratios of the rectangular specimens. In the previous paper, they were subsequentry subjected to tension tests in the direction of principal strain, and the coefficients of anisotropic yield condition were determined for various amounts of principal strains. In the present paper, on the other hand, the test directions were angled 22.5°, 45°, and 67.5° to the principal strain direction. One of the anisotropic coefficients left unknown in the previous study was thus obtained.
一般社団法人日本機械学会の論文
1987-05-25