Effects of abrasive tools on surface finishing under brittle-ductile grinding regimes when manufacturing glass
Article dans une revue avec comité de lecture
This paper addresses the effects of bonds and grains of abrasive tools on the edge aspect of ground glass surface. Diamond grains and silicon carbide (SiC) grains combined with two bond types, i.e., resin and metal, were considered for this study. The surface edge characteristics were characterized using scanning electron microscope (SEM) and interferometer observations. In particular, the spectrum of arithmetic mean was investigated for distinguishing the different scales of analysis. Experimental results showed that the grinding forces vary sensitively with bond type and wheel velocity. Using diamond grains’ wheel, it was found that roughness level obtained with metallic bond is lower than that obtained with resin bond. However, using a resin-bonded wheel, two mechanisms of material removal were revealed according to grains’ type. (i) A partial ductile regime, i.e., ductile streaks and brittle fracture, obtained with diamond grains, and (ii) a fully ductile regime obtained with SiC grains. Thus, it was found that ground surface obtained using SiC grains’ wheel has a better roughness than that obtained using diamond grains wheel. Besides, SiC grains seem to lead to more marked streaks and form defects.
Showing items related by title, author, creator and subject.
Smoothness and plateaudness contributions to the running-in friction and wear of stratified helical slide and plateau honed cylinder liners Article dans une revue avec comité de lectureYOUSFI, Mohammed; MEZGHANI, Sabeur; DEMIRCI, Ibrahim; EL MANSORI, Mohamed (Elsevier, 2015)Cylinder liner surface has a great influence on frictional and wear performances of combustion engines during the running-in period. Two surface texture anisotropies produced by plateau honing (PH) and helical slide honing ...
Article dans une revue avec comité de lectureDEMIRCI, Ibrahim; MEZGHANI, Sabeur; YOUSFI, Mohammed; EL MANSORI, Mohamed (American Society of Mechanical Engineers, 2014-01)Determining friction is as equally essential as determining the film thickness in the lubricated contact, and is an important research subject. Indeed, reduction of friction in the automotive industry is important for ...
Article dans une revue avec comité de lectureMEZGHANI, Sabeur; DEMIRCI, Ibrahim; YOUSFI, Mohammed; EL MANSORI, Mohamed (Elsevier, 2013)The texture change during running-in alters the performance and efficiency of a tribo-mechanical system. During mass production of cylinder liners, a final finishing stage known as ‘‘plateau honing’’ is commonly added to ...
Tribological performances of elliptic and circular texture patterns produced by innovative honing process Article dans une revue avec comité de lectureYOUSFI, Mohammed; MEZGHANI, Sabeur; DEMIRCI, Ibrahim; EL MANSORI, Mohamed (Elsevier, 2016)Honing is a manufacturing process which uses friction and abrasion mechanisms at a reduced velocity to print a multiscale and anisotropic texture on the liner surface of automotive engines. It enables to enhance the ...
Communication avec acteDEMIRCI, Ibrahim; MEZGHANI, Sabeur; YOUSFI, Mohammed; ZAHOUANI, Hassan; EL MANSORI, Mohamed (2013)The reduction of friction and the limitation of emissions of greenhouse gases are the main objectives of the automotive industry. This energy e ciency is related to functionalization of the surface of ringpack tribo-system. ...