Results 141 to 150 of about 2,115,926 (403)

Многопроходная сварка сталей больших толщин с использованием лазерного излучения [PDF]

, 2005
Описана технология много проходной автоматизированной лазерной и лазерно-дуговой сварки конструкционных сталей толщиной до 20 мм. Производительность гибридного способа сварки выше в несколько раз по сравнению с лазерной сваркой.Technology of automated ...
Бернацкий, А.В., Набок, Т.Н., Сиора, А.В., Хаскин, В.Ю., Чижская, Т.Г., Шелягин, В.Д., Шитова, Л.Г.   +6 more
core  

Modeling Electrical Transport in Random Networks Composed of Metal‐Oxide Nanowires: The Transition from Junction‐Dominated to Nanowire‐Dominated Regime

Advanced Theory and Simulations, EarlyView.
This study proposes a model for the electrical transport properties of random networks of metal oxide nanowires. Based on the characteristic lengths and energies of nanowires, it allows for discussing the transition from the junction‐dominated to the nanowire‐dominated transport regime.
Andrea Ponzoni
wiley   +1 more source

Marangoni driven turbulence in high energy surface melting processes

, 2016
Experimental observations of high-energy surface melting processes, such as laser welding, have revealed unsteady, often violent, motion of the free surface of the melt pool.
Kenjereš, Saša, Kidess, Anton, Kleijn, Chris R., Righolt, Bernhard W.   +3 more
core   +1 more source

The flow of heat and the motion of the weld pool in penetration welding with a laser [PDF]

, 1985
John Dowden, Michael Davis, Phiroze Kapadia   +2 more
openalex   +1 more source

Laser Beam Welding of Brass

Physics Procedia, 2014
AbstractUp to date the evaporation process in laser beam welding of alloys with volatile elements is not completely understood. This paper discusses the phenomena occurring at the welding process of brass with 37m% zinc. Since copper has a solidification temperature of 1,087°C and zinc vaporizes at a temperature of 907°C, a strong evaporation takes ...
Konstantin Hofmann, Florian Hugger, Michael Schmidt, Stefan Stein   +3 more
openaire   +2 more sources

Armoring Boron Nitride with Pyrolytic Carbon Layers for Tunable Rigidity and Flexibility

Advanced Science, EarlyView.
By precisely controlling the thickness of the PyC armor, the BN@PyC aerogel achieves a remarkable transformation in mechanical properties, spanning multiple orders of magnitude from flexibility to rigidity, while simultaneously exhibiting versatility, including elastic responsive conductivity, enhanced thermal conductivity, and outstanding ablative ...
Meng Lan, Yu Pei, Kexin Huang, Yudong Zhou, Xiao Han, Qiangang Fu   +5 more
wiley   +1 more source

METALLURGICAL ASPECTS OF WELDABILITY OF MULTIPHASE STEELS FOR AUTOMOTIVE INDUSTRY [PDF]

Applied Engineering Letters, 2017
This paper presents some of technical aspects of the twin-spot laser welding of multiphase steels for automotive industry. The dual beam was obtained using a special optical system that divides a laser beam.
M.Morawiec, A.Grajcar
doaj  

Argon laser—welded arteriovenous anastomoses [PDF]

, 1987
Rodney A. White, George E. Kopchok, Carlos E. Donayre, Geoffrey H. White, Richard Lyons, Roy M. Fujitani, Stanley R. Klein, Jouni Uitto   +7 more
openalex   +1 more source

Bio‐Inspired Structural Color Irises as Physical Unclonable Functions for Anti‐Counterfeiting

Advanced Science, EarlyView.
This work employs colloidal photonic crystals to create macro‐to‐micro scale PUF anti‐counterfeiting patterns. Integrated with iris recognition algorithms, it establishes a multi‐layered optical anti‐counterfeiting system based on structural color irises.
Kongyu Ge, Yiming Hu, Jiangnan Yan, Jianing Ding, Yifan Gao, Hongyu Yi, Zhan Li, Lingfei Cui, Shaowei Hu, Hongjun Ji, Mingyu Li, Ruobing Bai, Rongpei Shi, Huanhuan Feng   +13 more
wiley   +1 more source

Applications of Laser Welding in Dentistry: A State-of-the-Art Review

Micromachines, 2018
The dental industry without lasers is inconceivable right now. This captivating technology has outlasted other possible alternative technologies applied in dentistry in the past due to its precision, accuracy, minimal invasive effect as well as faster ...
Asma Perveen, C. Molardi, C. Fornaini
semanticscholar   +1 more source