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Advances in Laser Drilling of Structural Ceramics [PDF]

Nanomaterials, 2022
The high-quality, high-efficiency micro-hole drilling of structural ceramics to improve the thermal conductivity of hot-end parts or achieve high-density electronic packaging is still a technical challenge for conventional processing techniques. Recently,
Xianshi Jia, Yongqian Chen, Lei Liu, Cong Wang, Ji’an Duan   +4 more
doaj   +2 more sources

Femtosecond Laser Drilling of Cylindrical Holes for Carbon Fiber-Reinforced Polymer (CFRP) Composites [PDF]

Molecules, 2021
Ultrafast laser drilling has been proven to effectively reduce the heat-affected zone (HAZ) of carbon fiber-reinforced polymer (CFRP) composites. However, previous research mainly focused on the effects of picosecond laser parameters on CFRP drilling ...
Hao Jiang, Caiwen Ma, Ming Li, Zhiliang Cao   +3 more
doaj   +2 more sources

Investigation on the Effect of Dynamic Focus Feeding and Widening Path in Nanosecond Laser Drilling [PDF]

Micromachines
Laser trepan drilling and laser helical drilling are typical methods for fabrication of micro through-holes through scanning laser beam. In the drilling process, the subsequent laser pulse may be occluded by the edge and the sputter deposition at the ...
Jianke Di, Jian Li
doaj   +2 more sources

Fabrication of Micro-Holes with High Aspect Ratios in C_f/SiC Composites Using Coaxial Waterjet-Assisted Nanosecond Laser Drilling [PDF]

Micromachines
In the present study, the coaxial waterjet-assisted nanosecond laser drilling of micro-holes in Cf/SiC composites, coupled with nanosecond laser drilling in air for fabricating micro-holes with high aspect ratios, were investigated.
Chenhu Yuan, Zenggan Bian, Yue Cao, Yinan Xiao, Bin Wang, Jianting Guo, Liyuan Sheng   +6 more
doaj   +2 more sources

Improving the Quality of Laser Drilling by Assisted Process Methods of Static Solution and Mist Blowing [PDF]

Micromachines
The use of static solution-assisted laser drilling can effectively improve hole roundness, decrease taper angle, and reduce recast layer thickness and hole wall slag adhesion.
Yuan Tao, Zhiwei Wang, Shanshan Hu, Yufei Feng, Fan Yang, Guangliang Li   +5 more
doaj   +2 more sources

Research and Experimentation on Acoustic Monitoring Technology for Laser Drilling Penetration [PDF]

Micromachines
To prevent back wall damage in cavity workpieces during laser drilling, it is crucial to monitor hole penetration status in real time. This study proposes a laser drilling penetration monitoring method based on acoustic principles.
Bowen Lian, Kewen Pan, Liqun Wang, Liwu Shi, Jianhua Yao, Wei Guo   +5 more
doaj   +2 more sources

Improvement of Micro-Hole Processing in SiC_f/SiC Ceramic Matrix Composite Using Efficient Two-Step Laser Drilling [PDF]

Micromachines
SiCf/SiC ceramic matrix composite (CMC), a hard and brittle material, faces significant challenges in efficient and high-quality processing of small-sized shapes.
Yue Cao, Bin Wang, Zhehang Li, Jiajia Wang, Yinan Xiao, Qingyang Zeng, Xinfeng Wang, Wenwu Zhang, Qunli Zhang, Liyuan Sheng   +9 more
doaj   +2 more sources

Significant Reduction in Energy Consumption and Carbon Emission While Improving Productivity in Laser Drilling of CFRP Sheets with a Novel Stepped Process Parameter Parallel Ring Method

Journal of Manufacturing and Materials Processing, 2022
Although laser drilling of carbon fibre-reinforced polymer (CFRP) composites offers the advantages of zero tool-wear and avoidance of fibre delamination compared with mechanical drilling, it consumes considerably more energy during the drilling process ...
Menghui Zhu, Chao Wei, Wei Guo, Zhizhou Zhang, Jinglei Ouyang, Paul Mativenga, Lin Li   +6 more
doaj   +1 more source

Improving hole quality of thick CFRP laminates through a laser-mechanical compound drilling process

Journal of Materials Research and Technology, 2023
Conventional mechanical drilling of thick carbon fiber reinforced plastic (CFRP) composite laminates is prone to machining-induced defects such as burrs, delamination, and severe tool wear.
Nengru Tao, Genyu Chen, Song Cai, Wenjun Fang, Zhengming Xiao   +4 more
doaj   +1 more source

Laser drilling: reviewing the effect of purging system and formation parameters

Journal of Engineering and Applied Science, 2023
Laser drilling is capable of reducing drilling costs and time. In laser drilling, a high rate of penetration (ROP) can be achieved, and the hole is cased due to laser interaction once it is drilled.
Mohamed Hosin ElNeiri, Abdel Sattar Abdel Hamid Dahab, Abdulaziz Mohamed Abdulaziz, Khalid Mahmoud Abdelghany   +3 more
doaj   +1 more source