Journal ArticleDOI
A model for lapping of glass
M. Buijs,K. Korpel-van Houten +1 more
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In this article, the influence of Young's modulus, hardness and fracture toughness on material removal and surface roughness for two different sets of experimental conditions was analyzed. And the authors developed a model of three-body abrasion by material removal via rolling and indenting abrasives, which allows an average normal force per abrasive to be determined from Preston's coefficient and the characteristics of the workpiece and abrasive.Abstract:
Lapping of glass and other brittle materials is an important economic activity. Nevertheless, it has not received much scientific attention, despite the fact that it is also related to problems of wear (three-body abrasion). Therefore, lapping of glass has been analysed in terms of the concept of lateral fracture, by studying the influence of material parameters, namely Young's modulus, hardness and fracture toughness, on material removal and surface roughness for two different sets of experimental conditions. The concept was found to be well applicable, and was therefore used to develop a model of three-body abrasion by material removal via rolling and indenting abrasives. The model gives a good description of the two experiments. It allows an average normal force per abrasive to be determined from Preston's coefficient and the characteristics of the workpiece and abrasive.read more
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Tribology of Abrasive Machining Processes
TL;DR: In this article, the authors draw upon the science of tribology to understand, predict and improve abrasive machining processes, and demonstrate how tribology can be applied as a tool to improve abrasives.
Journal ArticleDOI
Multicrystalline silicon for solar cells
TL;DR: In this article, the distribution and morphology of lattice defects can be related to the electrical properties of multicrystalline silicon ingots and carbon in EFG ribbons and their interaction with extended defects such as dislocations and grain boundaries.
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Experiments and observations regarding the mechanisms of glass removal in magnetorheological finishing
TL;DR: Drag force measurements and atomic force microscope scans demonstrate that, when added to a MR fluid, nonmagnetic abrasives are driven toward the workpiece surface because of the gradient in the magnetic field and hence become responsible for material removal.
Journal ArticleDOI
Abrasive fine-finishing technology
F. Hashimoto,Hitomi Yamaguchi,Peter Krajnik,Konrad Wegener,Rahul Chaudhari,Hans-Werner Hoffmeister,Friedrich Kuster +6 more
TL;DR: Abrasive fine-finishing technology is often applied as a final finishing process, and the selection of the right technology is crucial to obtaining the desired performance of functions such as fatigue life.
Journal ArticleDOI
Three-body abrasion of brittle materials as studied by lapping
M. Buijs,K. Korpel-van Houten +1 more
TL;DR: In this paper, a model for three-body abrasion of brittle materials is presented based on material removal by rolling abrasive particles, where the particles indent the workpiece surface and remove material by lateral cracking.
References
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QED: The Strange Theory of Light and Matter
TL;DR: Feynman's "QED" as mentioned in this paper is an edited version of four lectures on quantum electrodynamics that Feynman gave to the general public at UCLA as part of the Alix G. Mautner Memorial Lecture series.
Journal ArticleDOI
Direct Observation and Analysis of Indentation Cracking in Glasses and Ceramics
Robert F. Cook,George M. Pharr +1 more
TL;DR: In this paper, the authors investigated the material dependence of the initiation sequence of indentation cracks (cone, radial, median, half-penny, and lateral) using an inverted tester allowing simultaneous viewing of the fracture process and measurement of the indeter load and displacement during contact.
Journal ArticleDOI
Chemical processes in glass polishing
TL;DR: In this article, a detailed mechanico-chemical model for the glass polishing process is proposed, and the central chemical process which occurs is the interaction of both the glass surface and the polishing particle with water.
Journal ArticleDOI
Elastic/Plastic Indentation Damage in Ceramics: The Lateral Crack System
TL;DR: In this paper, the authors studied the dynamics of lateral crack propagation in a sharp-indenter contact field and derived an expression for equilibrium crack evolution with due allowance for the close proximity of crack plane and specimen free surface.
Journal ArticleDOI
A study of abrasive wear under three-body conditions
TL;DR: In this article, a simple quantitative expression for abrasive wear rate is developed, and the abrasive data of a number of earlier investigators is analyzed in terms of this expression. But the results of this analysis are limited, since the average loose abrasive grain spends 90% of its time rolling and only 10% of the time abrading the sliding surfaces between which it is situated.