Results 21 to 30 of about 59,140 (302)
Laser drilling of via micro-holes in single-crystal semiconductor substrates using a 1070 nm fibre laser with millisecond pulse widths [PDF]
, 2015 Micro-machining of semiconductors is relevant to fabrication challenges within the semiconductor industry. For via holes for solar cells, laser drilling potentially avoids deep plasma etching which requires sophisticated equipment and corrosive, high ...
Hodson, Jonathan R. +2 more
core +2 more sources
Micromachines, 2023 Femtosecond laser drilling is extensively used to create film-cooling holes in aero-engine turbine blade processing. Investigating and exploring the impact of laser processing parameters on achieving high-quality holes is crucial.
Zhixi Zhao +6 more
doaj +1 more source
Thermal Behavior in the Lens Process [PDF]
, 1998 Direct laser metal deposition processing is a promising manufacturing technology which could significantly impact the length oftime between initial concept and finished part.
Baldwin, M. D. +12 more
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Materials & Design, 2022 Traditional mechanical bone drilling is prone to heat generation and debris accumulation which will cause tissue damage in orthopedic surgeries. Therefore, research on contactless laser bone drilling has become a mainstream trend in the development of ...
Lingfei Ji +6 more
doaj +1 more source
Control of welding residual stress for dissimilar laser welded materials [PDF]
, 2008 The most common problem of welding dissimilar metals (DMWs) with respect to residual stresses is the differences in the coefficient of thermal expansion and heat conductivity of the two welded metals.
A.G. Olabi +15 more
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Hole Drilling in Polymethyl Methacrylate (PMMA) Using CO2 Laser
Diyala Journal of Engineering Sciences, 2014 Laser sources are used in a large variety of applications for material processing. It is mainly used for welding, cutting, drilling, laser annealing, etc. This study narrows the scope down to one of the process, namely, laser drilling.
Rana M. Taha
doaj +1 more source
Measurement: Sensors, 2021 This research proposes to applied external electric field detect to the laser processing, Design and analysis of detection electrodes to detect plasma induced by laser processing, and then transmit the plasma signal to the controller in real time through
Chao-Ching Ho, Jun-Yi Gao
doaj +1 more source
Femtosecond laser ablation-ICP-mass spectrometry analysis of a heavy metallic matrix : determination of platinum group metals and gold in lead fire-assay buttons as a case study [PDF]
, 2010 Owing to the shorter time interval during which energy is delivered to the sample material, femtosecond (fs) laser ablation is preferable over nanosecond laser ablation for metallic samples. In this project, the influence of various laser parameters-beam
Günther, Detlev +4 more
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Gas investigation for laser drilling [PDF]
Journal of Laser Applications, 2007 This article deals with the gas effect on percussion laser drilling in ms pulse duration range. On the one hand, the flow of assistance gas jet is investigated with and without a target using a strioscopy setup and Pitot’s tube. By this way, the position of shock waves in the supersonic jet and near the target surface is revealed.
Schneider, Matthieu +4 more
openaire +3 more sources
International Journal of Geo-Engineering, 2018 Numerical methods for study effect of parameters on rock behaviour have increased in recent decades. Simulation is an important tool for analysis which the possibility of doing it is not feasible under experimental conditions and the possibility of ...
Abdollah Dini, Morteza Ahmadi
doaj +1 more source