A Development and Application of the Fretting Fatigue Test Apparatus

Abstract

Abstract. Fretting fatigue occurs in contacting parts which are subjected to fluctuating loads and very small sliding movements at the same time. Fretting fatigue can significantly reduce the fatigue life of materials. In this investigation, a new device is introduced, which performed using a combination of a servo-hydraulic push-pull fatigue testing machine and a specially designed jig for appropriate positioning of pads. The axial and contact loads are measured by load cells. The functionality of the device is examined by making a comparison between fretting fatigue lives and plain fatigue lives of a number of ZL702A aluminum alloy specimens. The main advantages of the device are its simplicity and cheapness. It can be developed further for high and low temperature tests in future.

Wear numerical assessment on AlSi9Cu2Mg cast aluminum alloy and life prediction

“…, 材 料属性如表3所示 [30] , 微观组织如图9所示 [30] . 表 1 HYS-100型疲劳试验机技术参数 Figure 9 Micro-structure of AlSi9Cu2Mg cast alloy [30].…”

“…, 该理 论指出, 如果切向力达到滑动摩擦力, 两个接触体将处 于完全滑移状态; 若小于滑动摩擦力将不产生相对滑 动, 但在一部分接触面上微滑, 而接触面的其余部分 没有相对滑动而只发生变形, 这时接触体处于部分滑 图 8 (网络版彩图)微动疲劳试件加持装置 Figure 8 (Color online) Fretting fatigue test rig.表 2 AlSi9Cu2Mg材料成分[30] …”