Results 51 to 60 of about 8,497 (257)

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

Optimization of parameters in laser welding of aluminum alloy 5052-H32 using beam oscillation technique for mechanical performance improvement

International Journal of Lightweight Materials and Manufacture, 2022
The beam oscillation is an innovative technique in laser welding resulting in important enhancement of the weld quality. This study assesses with numerical tools this improvement by investigating the effects of laser power, welding speed and amplitude on
Herinandrianina Ramiarison, Noureddine Barka, Sofiène Amira   +2 more
doaj   +1 more source

Localized Temperature Monitoring in Mouse Brain during Light Delivery via a Non‐Planar Tapered Fiber‐Integrated µRTD Sensor

Advanced Materials, EarlyView.
We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena, Marco Bianco, Barbara Spagnolo, Muhammad Fayyaz Kashif, Alberto Bramati, Massimo De Vittorio, Ferruccio Pisanello   +6 more
wiley   +1 more source

Ultrathin Li Metal Anodes: Quantitative Design Principles and Manufacturability Across Liquid and Solid‐State Batteries

Advanced Materials, EarlyView.
Ultrathin lithium metal anodes (≤15 µm) offer a promising route to high‐energy‐density batteries due to their high capacity and low potential. This review presents design principles for ultrathin Li, evaluates fabrication strategies, and discusses challenges in liquid and solid‐state cells.
Cheng Wang, Caoyu Wang, Shuixin Xia, Jodie A. Yuwono, Mingnan Li, Yanqiu Lyu, Ruizhi Zhang, Jun Wang, Jianfeng Mao, Zaiping Guo   +9 more
wiley   +1 more source

A comparative evaluation of microstructural and mechanical behavior of fiber laser beam and tungsten inert gas dissimilar ultra high strength steel welds

Defence Technology, 2016
The influence of different welding processes on the mechanical properties and the corresponding variation in the microstructural features have been investigated for the dissimilar weldments of 18% Ni maraging steel 250 and AISI 4130 steel.
Jaiteerth R. Joshi, Mastanaiah Potta, Kumar Adepu, Ramesh Kumar Katta, Madhusudhan Reddy Gankidi   +4 more
doaj   +1 more source

Methods for Improving Laser Beam Welding Efficiency

Physics Procedia, 2014
AbstractThe aim of this paper is to evaluate methods for improving laser beam welding efficiency, namely, obtaining increased penetration depth and enhanced weld quality without an increase in laser power or a decrease in welding speed. Increased efficiency can be realized with several techniques: butt joint edge surface modifications, preheating and ...
Salminen Antti, Sokolov Mikhail
openaire   +1 more source

Benchmarking Coaxial and Angular Optical Emission Spectroscopy With Recommendations for Reliable Compositional In Situ Monitoring During Laser Powder Bed Fusion

Advanced Materials Technologies, EarlyView.
ABSTRACT Real‐time insight into local chemistry is critical for reliable part quality in additive manufacturing, especially laser powder bed fusion (PBF‑LB/M), where rapid thermal cycles and localized evaporation can undermine part performance. Optical emission spectroscopy (OES) offers non‑intrusive, in situ plume monitoring, but detection geometry ...
Philipp Gabriel, Bastian Jülich, Anna Rosa Ziefuss, Florian Eibl, Stephan Barcikowski   +4 more
wiley   +1 more source

Investigations on high-power laser beam-submerged arc hybrid welding of thick duplex stainless steel using laser beam wobbling

, 2021
Art. 042039, 9 S.Duplex stainless steels are used in many application fields due to their outstanding performance with respect to strength, toughness, and corrosion resistance.
Frank Riedel, Riedel, F., Stefan Kaierle, Markus Puschmann, Jörg Hermsdorf, Patrick Urbanek, Urbanek, P., Sarah Nothdurft, Lahdo, R., Overmeyer, L., Ludger Overmeyer, Nothdurft, S., Rabi Lahdo, Puschmann, M., Kaierle, S., Hermsdorf, J.   +15 more
core   +1 more source

Influence of severe shot peening and Plasma spray FeCr18Ni10Mo3 coating on microstructure and mechanical properties of super austenite stainless steel sheets by laser beam welding

Journal of Materials Research and Technology, 2021
In this investigation, the microstructure and mechanical properties on severe double side shot peened and Plasma Spray FeCr18Ni10Mo3 filler power coated (PSC) Super Austenite Stainless Steel (SASS) was investigated for the butt joint configuration of 2 ...
R. Selvabharathi, A. Thamarai Selvan
doaj   +1 more source

Microsphere‐Modulated Sensing‐in‐Energy Supercapacitor With Self‐Filtering Ultra‐Large Signal Under High‐g Shocks

Advanced Science, EarlyView.
To overcome severe signal oscillation under extreme impact conditions, this work presents a Sensing‐in‐Energy microdevice which integrates a MEMS inertial structure directly within a supercapacitor electrolyte cavity. Utilizing shock‐driven transient contact and electrolyte damping for signal self‐filtering, it achieves weak‐oscillation, large ...
Zhihao Zheng, Yiqun Wang, Kaiyou Liu, Shancheng Luan, Yajiang Yin, Xiaofeng Wang, Keren Dai, Zheng You   +7 more
wiley   +1 more source