Results 11 to 20 of about 205,872 (218)

Unresonant interaction of laser beams with microdroplets [PDF]

Journal of the European Optical Society-Rapid Publications, 2012
The interaction of distilled water droplets (volumes of 3-4 µl) with pulsed laser beams emitted at 532 nm is described. At 532 nm the distilled water absorption is very low and the interaction of a water droplet with the laser radiation is dominated by ...
Pascu M. L., Popescu G. V., Ticos C. M., Andrei I. R.   +3 more
doaj   +1 more source

Material Reuse in Laser Powder Bed Fusion: Side Effects of the Laser—Metal Powder Interaction

Metals, 2020
Metal additive manufacturing is changing the way in which engineers and designers model the production of three-dimensional (3D) objects, with rapid growth seen in recent years. Laser powder bed fusion (LPBF) is the most used metal additive manufacturing
Eleonora Santecchia, Stefano Spigarelli, Marcello Cabibbo   +2 more
doaj   +1 more source

Spatter Formation and Splashing Induced Defects in Laser-Based Powder Bed Fusion of AlSi10Mg Alloy: A Novel Hydrodynamics Modelling with Empirical Testing

Metals, 2021
Powder spattering and splashing in the melt pool are common phenomena during Laser-based Powder Bed Fusion (LPBF) of metallic materials having high fluidity. For this purpose, analytical and computational fluid dynamics (CFD) models have been deduced for
Asif Ur Rehman, Muhammad Arif Mahmood, Peyman Ansari, Fatih Pitir, Metin Uymaz Salamci, Andrei C. Popescu, Ion N. Mihailescu   +6 more
doaj   +1 more source

Interaction of laser radiation with the material during production powders and fibers

Литьë и металлургия, 2021
The effect of laser radiation on a solid body leads to a change in the temperature field of the processed substance. The nature of heating, which is determined by the rate of change in temperature and temperature gradients, is different depending on the ...
Y. D. Chernichenko, M. N. Vereschagin, S. N. Tselueva, M. Yu. Tseluev   +3 more
doaj   +1 more source

Molecular Dynamics Study of Laser Interaction with Nanoparticles in Liquids and Its Potential Application

Nanomaterials, 2022
Laser interaction with nanoparticles in liquid is the fundamental theoretical basis for many applications but it is still challenging to observe this nanoscale phenomenon within a few nanoseconds in liquid by experiment.
Hao Huang, Yingjie Xu, Guofu Luo, Zhuobin Xie, Wuyi Ming   +4 more
doaj   +1 more source

Revealing the effects of laser beam shaping on melt pool behaviour in conduction-mode laser melting

Journal of Materials Research and Technology, 2023
Laser beam shaping offers remarkable possibilities to control and optimise process stability and tailor material properties and structure in laser-based welding and additive manufacturing.
Amin Ebrahimi, Mohammad Sattari, Aravind Babu, Arjun Sood, Gert-Willem R.B.E. Römer, Marcel J.M. Hermans   +5 more
doaj   +1 more source

Laser treatment impact on the fabric 07C11-KV surface and its coating with zirconium

Литьë и металлургия, 2022
The results of laser radiation interaction with woven fabrics and coatings on them can be used as a basis for new technological processes. The morphology of the surface of a pure mixed fabric 07C11-KV (Mogotex) is studied and this fabric with a zirconium
A. G. Anisovich, I. P. Akula, A. P. Laskovnev, V. I. Zhuravleva, M. I. Markevich, N. M. Chekan   +5 more
doaj   +1 more source

Structure-Mediated Excitation of Air Plasma and Silicon Plasma Expansion in Femtosecond Laser Pulses Ablation

Research, 2018
Femtosecond laser-induced surface structures upon multiple pulses irradiation are strongly correlated with the pulse number, which in turn significantly affects successive laser-material interactions.
Qingsong Wang, Lan Jiang, Jingya Sun, Changji Pan, Weina Han, Guoyan Wang, Feifei Wang, Kaihu Zhang, Ming Li, Yongfeng Lu   +9 more
doaj   +1 more source

Multi-Material Spreading Strategies for Functionally Graded Material Manufacturing in LPBF [PDF]

EPJ Web of Conferences
Functionally graded materials (FGMs) offer superior performance due to their gradual property variation. However, traditional manufacturing face challenges with material wastage, geometric complexity, and process control. Laser Powder Bed Fusion (LPBF-AM)
Choudhury Shakti Swaroop, Annabattula Ratna Kumar, Amirthalingam Murugaiyan   +2 more
doaj   +1 more source

Heat impact during laser ablation extraction of mineralised tissue micropillars

Scientific Reports, 2021
The underlying constraint of ultrashort pulsed laser ablation in both the clinical and micromachining setting is the uncertainty regarding the impact on the composition of material surrounding the ablated region.
Samuel McPhee, Alexander Groetsch, Jonathan D. Shephard, Uwe Wolfram   +3 more
doaj   +1 more source