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A new method for calculating laser intensity distribution on workpiece surface in laser-directed energy deposition process by considering powder stream distribution and laser attenuation
Laser-directed energy deposition is a fast-growing method for manufacturing complex geometries and materials that are hard to shape with conventional...
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Laser Transformation Hardening
Laser beam hardening produces hard, wear-resistant surface layers on tools and components made from steel and cast iron. Especially on small and/or...
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Aperiodic Two-Dimensional Acoustic Black Holes for Broadband Vibration Attenuation in a Strip
PurposeAcoustic black holes (ABHs) are promising for vibration control in lightweight structures as proven for one- or two-dimensional periodic...
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Laser Shock Peening at Oblique Angles
Laser shock peening process generally introduces compressive residual stresses on a component by targeting laser beam normal to the surface. However,...
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Attenuation of the acoustic noise radiated by a compressible boundary layer through injection of a vibrationally active gas
The effects of vibrational nonequilibrium processes on turbulence-generated acoustic noise were investigated in a Mach-2.8 shock-tunnel facility. Gas...
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A novel 3D-printable tensegrity-inspired metamaterial enabling dynamic attenuation
Dynamic attenuation is a major concern in many engineering fields, and excessive energy inputs may cause fatal damages to the key devices. Therefore,...
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Simulation and Experimental Study of Laser Cladding Layer Dimension on Inclined Substrates
To tackle the laser cladding dimension problems such as complex algorithms and high experimental costs, a prediction model of layer cladding...
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Performance of BPSK-FSO Communication Over Turbulence and Fog Attenuation
Free space optical communication is a technology that uses optical signals to transmit data between transmitters and receivers. In this paper, we...
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Influence of high strain rate on the transient transmission of laser shock waves
Laser shock peening (LSP) is an effective surface treatment method used to regulate residual stress and surface roughness of treated materials. In...
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Modeling of temperature distribution and clad geometry of the molten pool during laser cladding of CoCrCuFeNi alloys
This work simulated a modified three-dimensional single-track finite element model and a temperature discrimination mechanism in order to investigate...
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Shock wave attenuation using sandwiched structures made up of polymer foams and shear thickening fluid
The present study experimentally investigates the shock wave attenuation performance of various sandwiched structures made up of different polymer...
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Porosity Evaluation and Analysis for 316L Stainless Steel by Selective Laser Melting Using Laser Ultrasonic Technology
Selective laser melting (SLM) is a state-of-the-art technology for efficiently manufacturing individually customized complex geometric components....
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Confocal Laser Scanning Polarimetry
Confocal laser scanning polarimetry is an emerging imaging modality that combines the strength of standard confocal microscopy with the selectivity...
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Thermal radiation attenuation performance of fine water spray using twin-fluid nozzles with multiple holes
Thermal radiation attenuation (TRA) performance of fine water spray was experimentally examined using three internal-mixing types of twin-fluid...
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Dental Enamel Remineralization Following Diode Laser Irradiation
Caries is a globally important public health problem that affect teeth and may also cause problems for systemic health. High power lasers have been...
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Study on fluid flow characteristics and laser transmission mode of water jet–guided laser processing in blind hole
In order to understand the transmission mode of laser in water jet–guided laser (WJGL) after entering blind holes, the flow characteristics of water...
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Effect of interlayer laser shock peening on residual stress induced by selective laser melting
Laser shock peening (LSP) is a surface-strengthening technique that reduces residual stress in metallic parts. However, there is little literature on...
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Reduced Training Data for Laser Ultrasound Signal Interpretation by Neural Networks
The performance of machine learning algorithms is conditioned by the availability of training datasets, which is especially true for the field of...
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Tailored laser beam shapes for welding of copper using green laser radiation
The rapid development of laser beam sources and adapted welding technologies in recent years lead to an increased use of laser welding techniques in...
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Based on FPGA Laser Spectrum Analysis System
In order to quickly obtain laser spectral distribution information, a spectral analysis system based on FPGA is proposed. After the system collects...