抄録
This paper deals with investigation on microscopic damage in paper-based friction materials subjected to compressive loading at elevated temperature to clarify influence of temperature on damage. Two kinds of paper-based friction materials which were composed with aramid fiber, cellulose fiber and phenolic resin were used. The compressive tests were conducted at room temperature (R.T.) and 120℃ in air. After the tests, damage initiated during the fatigue tests was observed. Damage density in both materials increased with increasing load cycles for all conditions, and damage density also increased with elevating temperature. The paper-based friction materials were susceptible to damage at elevated temperature. From a viewpoint of the constituents, damage density in the cellulose-based material was much higher than in the aramid-based material.
