Results 21 to 30 of about 9,650 (209)

Epifluorescent microscopy of edge-trimmed carbon fibre-reinforced polymers: An alternative to computed tomography scanning

Advanced Composites Letters, 2020
X-Ray computed tomography (XCT) can be used to detect edge-milled carbon fibre-reinforced polymer (CFRP) defects. Significantly this method is able to show subsurface defects that cannot be captured by traditional methods such as stylus-based or more ...
S Ashworth, JPA Fairclough, M Monoranu, H Ghadbeigi, J Meredith, Y Takikawa, K Kerrigan   +6 more
doaj   +1 more source

Enhancing Laser Damage Resistance of Co²⁺:MgAl₂O₄ Crystal by Plasma Etching

Applied Sciences, 2023
Co2+:MgAl2O4 crystals are successfully used as passive Q-switches within the cavity of erbium glass lasers. Their limited resistance to laser radiation might also put constraints on the generated output peak power.
Giedrius Abromavičius, Martynas Skapas, Remigijus Juškėnas   +2 more
doaj   +1 more source

Experimental Study on Variation of Surface Roughness and Q Factors of Fused Silica Cylindrical Resonators with Different Grinding Speeds

Micromachines, 2021
For the axisymmetric shell resonator gyroscopes, the quality factor (Q factor) of the resonator is one of the core parameters limiting their performances.
Libin Zeng, Yunfeng Tao, Yao Pan, Jianping Liu, Kaiyong Yang, Hui Luo   +5 more
doaj   +1 more source

Research on Subsurface Damage Measurement of Fused Silica in Ultra-Precision Grinding Based on Laser Damage Performance

Applied Sciences
In order to achieve accurate prediction of subsurface damage (SSD) in ultra-precision grinding of high-performance ultra-violet laser-irradiated fused silica optics, the paper combines damage precursor multimodal measurement technology with ...
Yaoyu Zhong, Mingjin Xu, Wenjun Kuang, Fubin Wan, Zhifan Lin, Yansong Fan, Qingqing Hu, Fufang Xu   +7 more
doaj   +1 more source

Polarized laser scattering detection of subsurface damage of quartz glass induced by grinding

Frontiers in Materials, 2023
Subsurface damage (SSD) is inevitably generated during the grinding process of quartz glass. It has a great impact on sustainability, lifetime and optical performance of quartz glass components and systems. This paper proposes a non-destructive detection
Fangyuan Shi, Guowen Qiao, Qixin Lv, Qian Bai   +3 more
doaj   +1 more source

Numerical Investigation on the Effects of Grain Size and Grinding Depth on Nano-Grinding of Cadmium Telluride Using Molecular Dynamics Simulation

Nanomaterials, 2023
Cadmium telluride (CdTe) is known as an important semiconductor material with favorable physical properties. However, as a soft-brittle material, the fabrication of high-quality surfaces on CdTe is quite challenging.
Changlin Liu, Wai Sze Yip, Suet To, Bolong Chen, Jianfeng Xu   +4 more
doaj   +1 more source

Molecular Dynamics Simulation of Adhesion Effect on Material Removal and Tool Wear in Diamond Grinding of Silicon Wafer

Tribology Online, 2008
This study aims to clarify the interaction between a silicon wafer and individual diamond abrasives in grinding to support the estimation of optimal grinding conditions for minimizing the subsurface damages and maximizing the removal rate. In this paper,
Jun Shimizu, Hiroshi Eda, Libo Zhou, Hidemitsu Okabe   +3 more
doaj   +1 more source

Surface and Subsurface Quality Assessment of Polished Lu2O3 Single Crystal Using Quasi-Brewster Angle Technique

Frontiers in Physics, 2021
The sesquioxide Lu2O3 single crystal has attracted tremendous attention as potential host material for high-power solid-state lasers. As polishing is the terminal process of conventional ultra-precision machining, the quality of polished crystal directly
Chengyuan Yao, Wanfu Shen, Wanfu Shen, Xiaodong Hu, Chunguang Hu   +4 more
doaj   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Study of Subsurface Damage of Tungsten Alloy in Rotary Ultrasonic Grinding

Engineering Perspective, 2021
Tungsten alloy is generally used in aerospace, military defense services, the nuclear industry, and other essential fields of manufacturing due to its physical and chemical properties.
Emmanuel Karangwa, Pacifique Turabimana
doaj   +1 more source