Results 11 to 20 of about 268,551 (262)

Cutting Performance of Randomly Distributed Active Abrasive Grains in Gear Honing Process

open access: yesMicromachines, 2021
In power gear honing, the random distribution of abrasive grains on the tooth surface of the honing wheel is the main factor that influences the machining performance of high-quality hardened gears.
Yang Gao   +6 more
doaj   +1 more source

Nitrogen Removal by HN-AD Bacteria Immobilized on Modified Absorbent Stone [PDF]

open access: yesChemical and Biochemical Engineering Quarterly, 2020
How to simplify the nitrogen removal process, reduce the cost and improve the efficiency has become an urgent problem to be solved. In this research, the isolated HNAD (heterotrophic nitrification and aerobic denitrification) bacteria were used to remove
W. Zhang, Z. Zhang, S. Wang
doaj   +1 more source

Simulation of material removal efficiency with ultrashort laser pulses [PDF]

open access: yesApplied Physics A Materials Science & Processing, 1999
Understanding physical processes accompanying ablation is necessary for optimal use of ultrashort laser pulse (USLP) material processing. We describe the implementation of self-consistent electromagnetic propagation -energy absorption in our numerical models and estimate effect on material removal of energy, pulselength and prepulses.
Banks, P S   +4 more
openaire   +1 more source

Biochar Derived from Sugarcane Bagasse for Adsorption of Anionic and Cationic Dyes [PDF]

open access: yesMaterials Research
In this study, biochar‑derived adsorbent was prepared by pyrolysis of sugarcane bagasse using the activation step with KOH and applied for dye removal.
Maria Alaide de Oliveira   +4 more
doaj   +1 more source

Electrolytically Ionized Abrasive-Free CMP (EAF-CMP) for Copper

open access: yesApplied Sciences, 2021
Chemical–mechanical polishing (CMP) is a planarization process that utilizes chemical reactions and mechanical material removal using abrasive particles.
Seonghyun Park, Hyunseop Lee
doaj   +1 more source

Simulation and analysis of abrasive particles dynamics behavior during magnetic particles grinding on inner wall of pipe fitting

open access: yesJin'gangshi yu moliao moju gongcheng
To explore the dynamic behavior of magnetic abrasive particles in the grinding process of pipe fittings, the grinding process of magnetic abrasive particles was simulated using discrete elements.
Chuanzong WU   +6 more
doaj   +3 more sources

Effects of Process Parameters on Material Removal in Vibration-Assisted Polishing of Micro-Optic Mold

open access: yesMicromachines, 2018
Process parameter conditions such as vibrating motion, abrasives, pressure and tool wear play an important role in vibration-assisted polishing of micro-optic molds as they strongly affect material removal efficiency and stability. This paper presents an
Jiang Guo, Hirofumi Suzuki
doaj   +1 more source

Surface removal of ductile metal using cyclic low-frequency impact of a discrete particle-less waterjet

open access: yesJournal of Materials Research and Technology, 2023
The discrete waterjet (DWJ) offers advantages in material removal because of the cyclic impact loading, but the specific removal characteristics and corresponding mechanisms have not been yet fully understood.
Zu'an Wang   +7 more
doaj   +1 more source

Evaluation of removal efficiency of capping materials used in pulp revascularization in vitro

open access: yesBMC Oral Health, 2023
Abstract Background This study aimed to evaluate the removal efficiency of different capping materials used in pulp revascularization (PR) in a failure scenario. Methods The apices of freshly extracted 30 maxillary incisors were cut to mimic the immature teeth; then, root ...
Gözde Yildiz Cebeci   +3 more
openaire   +4 more sources

Increasing the efficiency of material removal using dual laser micromachining [PDF]

open access: yesThe International Journal of Advanced Manufacturing Technology, 2020
AbstractA continuous wave melting laser combined with a nanosecond ejection laser has been shown to improve the material removal efficiency by a factor of 2 to 8 compared with laser ablation processes reported in the literature. The decrease in the energy required for the combined lasers is primarily due to the optimisation of the irradiation time in ...
Osama Alkhawaldeh   +2 more
openaire   +1 more source

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