نتایج جستجو برای: grinding effect

تعداد نتایج: 1648431  

2017
Wonyoung Chang Alexander H. King Keith J. Bowman

The effect of temperature on grinding-induced texture in tetragonal lead titanate (PT) has been investigated as a function of the magnitude of loading applied to the sample surface during grinding, using in situ x-ray diffraction (XRD) with an area detector. Compared to the ground PT under lower loading conditions (5 N), the ground PT under higher loading conditions (40 N) retains strong ferroe...

2014
Silvia Haeussler Matthias Luepke Hermann Seifert Carsten Staszyk

BACKGROUND In equine practice, teeth corrections by means of motorized grinding systems are standard procedure. The heat resulting from that treatment may cause irreparable damage to the dental pulp. It has been shown that a 5.5°C temperature rise may cause severe destruction in pulp cells. Hence, the capability to continuously form secondary dentine is lost, and may lead, due to equine-typical...

2018
Meng Ren Renfang Wang Yimin Yang

The inkstone is a specific writing implement in China that was popularized since the Han Dynasty (202 BC–AD 220). A rectangular/round grinding plate accompanied with a grinding stone is considered as a kind of proto-inkstone. However, little scientific investigation has been performed to support this hypothesis. In this paper, a micro-destructive approach, including Fourier transform infrared s...

1998
K B Quast P G Hicks

The influence of feed size and pulp density on the specific rate of breakage of quartz was investigated. Plots of log fraction of feed remaining within the feed size interval against grinding time allowed the application of the first order grinding model to be examined. Substantial non-linearities were observed for all feed sizes due to environmental and material factors. For feed sizes above 1...

2015
Shannon H. Gaffney Anders Abelmann Jennifer S. Pierce Meghan E. Glynn John L. Henshaw Lauren A. McCarthy Jason T. Lotter Monty Liong Brent L. Finley

Over the last decade, concerns have been raised about potential respiratory health effects associated with occupational exposure to the flavoring additives diacetyl and 2,3-pentanedione. Both of these diketones are also natural components of many foods and beverages, including roasted coffee. To date, there are no published studies characterizing workplace exposures to these diketones during co...

2014
Olli Vuolteenaho KATJA OHENOJA Jouko Niinimäki

During the past decade submicron and nanoparticles have aroused a wide interest and gained new applications due to their high surface area and strength. Grinding with a wet stirred media mill is usually the last process step before the submicron or nanoparticles are added to an application, and the step where the final particle size distribution is achieved. Since stirred media milling is an en...

2008
Z. Yang Y. Gao D. Zhang T. Huang

Abstract. A Fuzzy-PID controller is designed for tracing reference cutting forces in grinding by integrating a high performance fuzzy controller and an easy to use PID controller. When the error of the grinding force is large, in order to respond quickly, the fuzzy controller with a self-tuning factor is adopted and the Max-Proc strategy is also used. This will be good for fuzzy reasoning. If t...

2003
N. S. Hu L. C. Zhang

This work studied the grindability of the multidirectional carbon fibre-reinforced plastic (CFRP) composites with the panel layup of [(0◦/90◦/45◦/−45◦)3]s. Focuses were on the chip formation, material removal mechanism, ground surface features and grinding force characteristics. The results were systematically compared with the unidirectional CFRP composites. It was found that the grinding forc...

2016
Sibel DİKİCİER

The influence of occlusal condition at the onset of temporomandibular dysfunction (TMD) has been strongly debated for many years. Occlusal disharmony has often corrected by selective grinding in occlusally sensitive patients with pain or dysfunction of muscular origin. This procedure should be preceded by the splint therapy in order to test the occlusal changes. The objective of this case repor...

2017
Evangelos Petrakis Konstantinos Komnitsas

The mechanistic approach has proven so far to be flexible and successful for simulation of the grinding process. The basic idea underlying mechanistic models, namely the matrix and population balance models, is based on the identification of natural events during grinding. Since each model has its own capabilities and limitations, their combined use may offer additional advantages on this aspec...

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