Variations of the Frictional Force and Contact Area in the Course of Pattern Abrasion of Rubber.

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  • IWAI Tomoaki
    Department of Mechanical Systems Engineering, Faculty of Engineering, Kanazawa University
  • UCHIYAMA Yoshitaka
    Department of Mechanical Systems Engineering, Faculty of Engineering, Kanazawa University

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Other Title
  • ゴムのパターン摩耗過程における摩擦力と接触面積の変化
  • ゴム ノ パターン マモウ カテイ ニ オケル マサツリョク ト セッショク メンセキ ノ ヘンカ

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Abstract

In this study variation in the frictional force of rubber was examined at the initial stage of pattern abrasion. The abrasion patterns′ lengths on the contact surface were also investigated to deduce the frictional force per unit length of abrasion patterns.<br>In the experiments, a rubber specimen was rubbed against a mating flat glass and the contact surface was observed through the mating glass. As a result, the contact area observed at the initial stage was decreased to reach a constant value after repeated sliding. At the initial stage many small abrasion patterns were observed. At the steady state of rubbing the size of individual abrasion pattern became larger and the number of abrasion patterns was reduced. The frictional force per unit length of abrasion patterns gradually increased with the prolonged sliding and then attained to a constant value. In the experiments examined the frictional forces were ranging from 0.3N/mm to 0.5N/mm. Therefore it is found that the cracks underneath the abrasion patterns are propagated by the frictional force.

Journal

  • NIPPON GOMU KYOKAISHI

    NIPPON GOMU KYOKAISHI 72 (10), 606-611, 1999

    THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN

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