Journal of Sericultural and Entomological Science (한국잠사곤충학회지)
- Volume 14 Issue 2
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- Pages.105-112
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- 1972
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- 2234-8174(pISSN)
Reological Studies on Cocoon Filament II. Changes of strength and elongation at breaking related to the stretching speed and swelling degree
견사의 탄성적성질에 관한 연구 II. 인장속도 및 팽윤에 따른 파괴강신도의 변화
Abstract
The effects of the stretching speed and the swelling degree of cocoon filaments on load-elongation curve were tested by tensilon with special attachments. The values of breaking strength, elongation at break and initial tensile strength obtained from load elongation curves are summarized as follows; 1. The breaking strength of the swollen cocoon filament appeared to increase at the high stretching speed, while elongation at break decreased. 2. Load-elongation curve became crinkled at the low speed of stretching. It suggests that both slip and break of the macrofibrils may occur in swelling of cocoon bave. 3. Breaking strength appeared to considerably decrease and elongation at break not to increase in swelling test at 9
팽윤견사를 수중에서 인장시킬 경우, 인장속도 및 팽윤정도의 차이가 견사의 하중신장곡선에 미치는 영향을 조사하였다. 인장시험은 Tensilon을 사용하였고, 절단시 강도, 신도 및 인장저항도를 조사한바 다음과 같은 결과를 얻었다. 1. 팽윤견사의 절단강도는 인장속도의 증가와 더부러 높아지나 절단신도는 감소하였다. 2. 견사를 팽윤(90
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