Results 51 to 60 of about 2,250,517 (282)

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

Simultaneous realization of time and carrier-envelope phase synchronization for an ultra-intense few-cycle laser pulse coherent combining system

High Power Laser Science and Engineering
Coherent combining of several low-energy few-cycle beams offers a reliable and feasible approach to producing few-cycle laser pulses with energies exceeding the multi-joule level. However, time synchronization and carrier-envelope phase difference (ΔCEP)
Guoli Zhang, Xiao Liang, Hao Xue, Xinglong Xie, Ping Zhu, Fucai Ding, Meizhi Sun, Linjun Li, Rashid Ul Haq, Ailin Guo, Xiangbing Zhu, Jianqiang Zhu   +11 more
doaj   +1 more source

Coherent beam combining of 61 femtosecond fiber amplifiers

, 2020
International audienceWe report on the coherent beam combining of 61 femtosecond fiber chirped-pulse amplifiers in a tiled-aperture configuration along with an interferometric phase measurement technique. Relying on coherent beam recombination in the far
Christian Larat, Arnaud Brignon, Larat, Christian, Veinhard, Matthieu, Fsaifes, Ihsan, Matthieu Veinhard, Lallier, Eric, Jérôme Bourderionnet, Bellanger, Severine, Durand, Eric, Louis Daniault, Bourderionnet, Jerome, Eric Lallier, Séverine Bellanger, Brignon, Arnaud, Chanteloup, Jean-Christophe, Jean-Christophe Chanteloup, Eric Durand, Daniault, Louis, Ihsan Fsaifes   +19 more
core   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Mismatch analysis of all-fiber coherent beam combiners based on the self-imaging effect

High Power Laser Science and Engineering
All-fiber coherent beam combiners based on the self-imaging effect can achieve a near-perfect single laser beam, which can provide a promising way to overcome the power limitation of a single-fiber laser.
Yuefang Yan, Yu Liu, Haoyu Zhang, Yuwei Li, Chao Guo, Qiang Shu, Wenhui Huang, Feng Jing, Rumao Tao   +8 more
doaj   +1 more source

Self-Synchronous Coherent Beam Combination [PDF]

2006 Digest of the LEOS Summer Topical Meetings, 2006
A completely novel concept for coherent beam combination is presented. The technique completely eliminates the need for a reference beam resulting in a dramatic simplification of electronic coherent beam combination without any compromise in performance.
openaire   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Impact of Beam Shape and Frequency on Weld Seam Geometry and Penetration Depth Using a Coherent Beam Combining Laser

Applied Sciences
The geometry and quality of a weld seam are critical factors in laser beam welding, influencing mechanical performance and structural integrity. Dynamically modulated laser beams provide a precise means of tailoring energy input in high-power laser ...
Karthik Ravi Krishna Murthy, Reza Sanei, Abhay Sharma, Simon Olschok, Uwe Reisgen   +4 more
doaj   +1 more source

A Metasurface Beam Combiner Based on the Control of Angular Response

Photonics, 2021
Beam combiners are widely used in various optical applications including optical communication and smart detection, which spatially overlap multiple input beams and integrate a output beam with higher intensity, multiple wavelengths, coherent phase, etc.
Zhihao Liu, Weibin Feng, Yong Long, Songming Guo, Haowen Liang, Zhiren Qiu, Xiao Fu, Juntao Li   +7 more
doaj   +1 more source