抄録
In order to clarify the viscoelastic behavior characteristic of FRTP, the stress relaxation measurements of polyethylene films filled with glass fiber fragments were carried out at various strains below 5% at a constant temperature of 23°C.
The analysis of the experimental data showed that the correspondence principle, which is a well known formula in the theoretical treatment of linear viscoelasticity, is useful to evaluate the relaxation modulus of FRTP under small strain.
