The occlusal design plays a decisive role in the fabrication of dental restorations. Dentists and technicians depend on mechanical simulations mandibular movement that are as accurate possible, particular, to produce interference-free yet chewing-efficient For this, kinetic data must be available, i.e., movements deformations under influence forces stresses. In present study, so-called function...

Conventional material removal of BK7 optical glass will normally result in brittle fracture at the surface, generating severe subsurface damage and poor surface finish. Subsurface damages induced by grinding strongly influence the mechanical strength and optical quality of optical glasses. However, through ductile mode grinding it is possible to reduce the surface and subsurface cracks. It is m...

According to turning instead of grinding process requirements and traditional working principle of ultrasonic vibration turning, a new idea of imitating grinding of two-dimensional ultrasonic vibration turning is brought firstly, and the mechanism of two-dimens ional ultrasonic vibration turning is elaborated. Based on the MATLAB software, grinding trajectory simulation and honing trajectory si...

This paper describes the methods using bonded cup wheels for grinding toroidal and cylindrical SiC mirrors with large curvature radii. Since the angle between the cutting direction of bonded abrasives and feed direction of the cup wheel is about 90 °, it is possible to obtain a surface with very low surface roughness independent of the direction of measurement. Toroidal mirrors, circular and el...

High-voltage electrical pulses (HVEP) technology was applied in grinding of a magnetite ore as a comminution pretreatment. The effect of HVEP pretreatment on grindability, liberation and separation performance of a magnetite ore was investigated by a systematic experimental study. The results showed that the pretreatment of high-voltage electrical pulses created some intergranular microcracks i...

This paper studies a method of surface heat treatment by making use of grinding heat and stress to create favorable microstructures and promote high wear and fatigue resistance. It was found that the thickness of the treated surface layer could be up to 600 μm. The beneficial microstructure of the layer was created by an enhanced martensite transformation, intensive dislocations and a more desi...

Existing analytical thermal models for predicting surface burns due to grinding have limited use because of their reliance on parameters that are not readily obtainable in practice. This paper presents a practical and consistent fuzzy rule-based model for estimating the grinding conditions at which ‘‘burn limits’’ occur. The model consists of 37 absolute and eight relative rules. It has a wide ...

Mechanochemistry is maturing as a discipline and continuing to grow, so it is important to continue understanding the rules governing the system. In a mechanochemical reaction, the reactants are added into a vessel along with one or more grinding balls and the vessel is shaken at high speeds to facilitate a chemical reaction. The dielectric constant of the solvent used in liquid-assisted grindi...

In this study, it is experimentally investigated that the surface generation process in the cross axis grinding method with small diameter grinding wheel. In this grinding method, workpiece surface speed and sum of both wheel working surface speed and wheel feed rate crossed each other. Therefore, it is the largest characteristic that the cross angle, which is defined as the angle between the w...

In this contribution macroscopic modeling of phase transformations and mechanical behavior low alloy steels are developed investigated. Such is importance in simulations transient thermo-mechanical processes which can cause transformations, examples from the railway industry include train braking induced frictional heating as well rail grinding welding operations. We adopt a approach includes t...