CORD TENSIONING DETERMINATION Russian patent published in 2014 - IPC G01L1/08 G01L5/04 

FIELD: instrumentation.

SUBSTANCE: proposed method consists in pinching of the cord between two clips, constant crosswise load being applied to cord centre, and in measuring the maximum sag. Pre-tensioning force F is calculated by the formula: $$F=\frac{PL}{4H}-ES(\sqrt{1+\frac{H^2}{l^2{}_0}}-1),$$ where F is cord tensioning value, N; P is crosswise load, N; H is the cord maximum sag, m; S is the cord cross-section area, m²; E is the cord modulus of elasticity, Pa; L=2*l₀ is the length of cord part located between clips, m.

EFFECT: simplified procedure.

4 dwg