A rheological mechanism of penetrative wear

Abstract

A model is proposed which explains the penetrative wear of a soft material by a harder one. Three distinct modes of penetration are present depending on the applied load. During the most severe penetration plate-like wear debris is ejected at the leading edge of the slider. A series of slip line fields is presented to approximate this debris formation process. Plastic constraint is seen to be an important factor in wear particle formation.

Wear mechanisms for ultrahigh molecular weight polyethylene in the total hip prosthesis

“…Third, the platelet is pushed up the face of the slider and attaches to the next particle. 24 The mechanisms of abrasive wear have been discussed previously. The second stage of this particular model for penetrative wear produces plate-like particles.…”

Abrasive, Erosive and Cavitation Wear

“…The development of the Scanning Electron Microscope (SEM) has provided a means of looking at some aspects of abrasive wear in closer detail. In a separate study with a similar apparatus it was found that random plate-like debris were formed by a stylus scratching cast iron [7]. In another study [6] a pin-on-disc wear rig was constructed to operate inside the SEM, to allow direct observations of wear.…”

“…Pure abrasive wear of plastics is generally thought to be less common than with metals [7,45]. The grits tend to wear plastics by indentation fatigue which is a much slower wear process.…”

A phenomenological model of abradable wear in high performance turbomachinery

“…Early approaches such as Archard's wear equation [l] have been augmented by diverse models emphasizing particular wear modes. Representative of these are the work of Bates et al [2] which focuses on asperity plowing, Rabinowicz [ 31 and Buckley [ 41 on the role of adhesion effects, Suh [ 51 on superplastic delamination wear, Molgaard [6] and Quinn [ 71 on oxidationassisted wear, and Duwell et al [ 81 and Komanduri and Shaw [ 91 on diffusion wear. Each of these wear modes has been observed in various combinations and in varying degress in turbomachinery blade tip/shroud rubs.…”