抄繊糸・紙糸の引張り強さに関する研究 (第5報)

糸の中の繊維全部が滑り抜けて糸が切れたと仮定した場合の引張り強さに関する考察

抄録

This report, continued from the previous report No. IV, deals also with the breaking strength of a yarn. Supposing that a yarn is cut due to slipping-out of all fibers, the breaking strength of a yarn P_R can be calculated in the following formula.
P_R=P_o{(1+ μl' cot²βo/Ro)+φ.25κtμl' cot²βo/Ro Wo}
where P_o : Breaking strength of the cut-materials
R_o : Radius at the beginning of twist
β_o Pitch angle at the beginning of twist
t : Thickness of the cut-materials
μ : Friction-coefficient
l' : Length of the fiber-element