In sealed contacts such as the reeds witch, adhesion can easily cause sticking failures structurally. Adhesion occurs due to transient sliding motion when contacts operate. However, few reports treated the effects of the sliding motion on adhesion. This paper presents a study on the adhesion process in vibratory sliding motion. A series of adhesion experiments is performed, using an apparatus modelled on contact sliding notion. As a result, it is learned that the adhesion process consists of the following steps; in a initial step, slip motion is lubricated by contamination films, in a last step, co-vibration motion occurs, as the transitional period, stick and slip motion appears. Also, the experiments indicate that there is a contact force value, under which adhesive force is maximized and that the adhesive force is in proportion to Initial amplitude. At last, a few methods to prevent adhesion on contacts are discussed, based the above results.
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