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contributor authorShih-Hsiang Chang
contributor authorThomas N. Farris
contributor authorSrinivasan Chandrasekar
date accessioned2017-05-09T00:03:27Z
date available2017-05-09T00:03:27Z
date copyrightApril, 2000
date issued2000
identifier issn0742-4787
identifier otherJOTRE9-28688#388_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/124359
description abstractSuperfinishing is an abrasive finishing process in which a smooth work surface is produced by simultaneously loading a bonded abrasive stone against a rotating workpiece surface and oscillating (reciprocating) the stone. The surface topography of a 600 grit aluminum oxide stone used for superfinishing is quantitatively described using scanning phase-shift interferometry. A bounded three-parameter lognormal distribution is found to provide a more accurate representation of cutting edge height distribution than a bounded normal distribution, especially in fitting the upper tail end of data. Moreover, the stone surface characteristics are nearly constant throughout stone life suggesting that superfinishing is a self-dressing process. This stone surface geometry is used to develop a contact mechanics model of the superfinishing process. The model estimates the number of cutting edges involved in material removal, the load distribution on these edges, and the resulting surface roughness of the superfinished surface. The effect of contact pressure on these estimated values has been studied. Only a very small percentage (less than 0.16 percent) of the cutting edges, which are comprised of the large cutting edges occurring in the tail end of distribution, are actively engaged in material removal. Further, the arithmetic average surface roughness, Ra, is found to be related to the average depth of penetration while the peak-to-valley surface roughness, Rt or Rtm, is related to the maximum depth of penetration. The prediction of surface roughness made with this model is found to agree reasonbly well with experimental results for superfinishing of hardened steel surfaces. [S0742-4787(00)00302-7]
publisherThe American Society of Mechanical Engineers (ASME)
titleContact Mechanics of Superfinishing
typeJournal Paper
journal volume122
journal issue2
journal titleJournal of Tribology
identifier doi10.1115/1.555374
journal fristpage388
journal lastpage393
identifier eissn1528-8897
keywordsForce
keywordsBuilding stone
keywordsSurface roughness
keywordsContact mechanics
keywordsCutting
keywordsPressure
keywordsStress AND Gaussian distribution
treeJournal of Tribology:;2000:;volume( 122 ):;issue: 002
contenttypeFulltext


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