Grinding Mechanisms and Strength Degradation for Ceramics

Malkin, S.; Ritter, J. E.

doi:10.4028/www.scientific.net/kem.71.195

Cited by 35 publications

(35 citation statements)

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“…Generally, strain rates for chip formation in abrasive adjustments are much greater than the minimum required for adiabatic deformation. This means that no appreciable amount of plastic shearing energy is dissipated as heat during deformation [36], particularly for heat-resistant materials, such as ceramics. Shearing energy is considered to plastically form the chip [36].…”

Section: Discussionmentioning

confidence: 99%

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In vitro rapid intraoral adjustment of porcelain prostheses using a high-speed dental handpiece

et al. 2008

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Section: Discussionmentioning

confidence: 99%

“…Specific removal energy is associated with bur-prosthesis interactions in removal processes [36]. SEM micrographs in Figs.…”

Section: Discussionmentioning

confidence: 99%

In vitro rapid intraoral adjustment of porcelain prostheses using a high-speed dental handpiece

et al. 2008

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“…The median cracks can extend much farther below the surface and thereby form SSD [4,5]. Although grinding is considered as the production technology which is widely used for manufacturing high-precision optical component, the grinding processes will cause damages and these damages usually reduces the strength, heat resistance, laser damage threshold, and other properties of the components [6,7]. Therefore, it is essential for manufacturing hard brittle component with high surface quality, ultra-precision, and fewer SSDs to understand the removal mechanism of brittle material and to master the way of the different processing parameters affecting the surface quality.…”

Section: Introductionmentioning

confidence: 99%

Relationship between grinding process and the parameters of subsurface damage based on the image processing

Wang

Hong-feng

et al. 2015

Int J Adv Manuf Technol

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Grinding is the main process step for the highprecision optical components, and its process parameters may bring forth subsurface damage to some degrees on the surfaces and finally result in the variation of the mechanical and optical properties of the components. In this paper, the ground sample is etched to expose the micro cracks and the characterization parameters of the subsurface damage are extracted using the image processing method. To investigate the influence of main grinding parameters on the micro cracks of subsurface damage, relationships among the average abrasive size, grinding force, wheel speed, and grinding depth and characterization parameters (length, angle, and density) of micro cracks are established. The results show that the influence of grinding parameters on the micro crack's length is consistent with that on the surface roughness. The average abrasive size and grinding force have obvious influence on the subsurface damage and surface roughness than wheel speed and grinding depth. Micro cracks' angle and density are almost not affected by the grinding parameters.

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“…Grinding with bound abrasives has been extensively used in forming and finishing components of many materials [1][2][3][4][5].The demand of parts associated with the advanced optical technology is increasing due to the growth and the expansion of the optical industry. Especially, super-precision optical parts associated with IT, NT and BT requires the high antideviation to accomplish the ultra precision machining.…”

Section: Introductionmentioning

confidence: 99%

Wear behavior of diamond wheel for grinding optical connector ferrule — FEA and wear test —

2008

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The grinding characteristics and the wear behavior of diamond wheel for grinding the optical connector ferrule were investigated by finite element analysis (FEA) and wear test. FEA of contact between diamond wheel and ferrule shows that the subsurface damage area of ferrule is 13µm from the interface of abrasive particle and matrix. Fallout of abrasive particle is affected by the stress state at the interface. A 2-D finite element model was established to calculate the distribution of stress at the interface. As the result of FEA, fallout condition of abrasive was concerned with the ratio of the critical protrusion; the ratio of particle size is about 0.6. FE model was established to investigate the effects of the diamond concentration of wheel. The FEA result shows that the lower concentration of it has larger wear volume due to the small stress propagation.. To investigate grinding performance, the pin-on-disc wear test was carried out for three types of concentrations 75%, 100% and 125%. Through the wear test, it was confirmed that the 75% wheel concentration has the highest amount of wear volume. This result shows good agreement with that of FEA. And 100% concentration by considering the grinding ratio of the wheel shows the best optimized result for the grinding performance.

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Grinding Mechanisms and Strength Degradation for Ceramics

Cited by 35 publications

References 0 publications

In vitro rapid intraoral adjustment of porcelain prostheses using a high-speed dental handpiece

In vitro rapid intraoral adjustment of porcelain prostheses using a high-speed dental handpiece

Relationship between grinding process and the parameters of subsurface damage based on the image processing

Wear behavior of diamond wheel for grinding optical connector ferrule — FEA and wear test —

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