Results 51 to 60 of about 830,855 (309)

Mechanisms of Increasing Weld Depth during Temporal Power Modulation in High‐Power Laser Beam Welding

Advanced Engineering Materials, EarlyView.
Temporal power modulation increases weld depth in high‐power laser beam welding of dissimilar round bars by nearly 20% compared to same average continuously welded welding power. The mechanism of action also applies to sheet welding and depends on the inertia of keyhole depth for the modulated laser beam power.
Jan Grajczak, David Reynders, Christian Nowroth, Jens Twiefel, Jörg Wallaschek, Sarah Nothdurft, Jörg Hermsdorf, Stefan Kaierle   +7 more
wiley   +1 more source

Maillard Type Reaction for Electroless Copper Plating onto Ceramic Nanoparticles

Advanced Engineering Materials, EarlyView.
This work presents the manufacturing of copper‐plated ceramic nanoparticles in an environmentally friendly way. Supported by organic functionalizations with pectin an electroless plating step can be performed. Sustainable reagents like xylose, and several amino acids are used for the reduction process.
Lukas Mielewczyk, Julia Grothe, Stefan Kaskel, Heinrich von Lintel, Katja Eichmann, Katrin Jahns, Avinash Hariharan, Abdelrahman Elsayed, Ulrich Krupp   +8 more
wiley   +1 more source

Shock Waves in Liquid under the Pulsed Action of a Cavitation Bubble on a Rigid Wall [PDF]

Учёные записки Казанского университета: Серия Физико-математические науки, 2015
Shock waves arising in water during the collapse of a cavitation bubble near a plane rigid wall are studied in the case with a liquid layer (interlayer) between the bubble and the wall. The shock waves determine to a large extent the pulsed action of the
A.A. Aganin, T.S. Guseva, L.A. Kosolapova, V.G. Malakhov   +3 more
doaj  

LES Analysis of the Effect of Snowdrift on Wind Pressure on a Low-Rise Building

Buildings, 2022
This paper presents a comparative study of the distribution of wind pressure acting on a low-rise building roof with or without snowdrift through the Large-Eddy simulation (LES) method. Firstly, based on previous wind-blowing snow experiments, the stable
Zhixiang Liu, Zhixiang Yu, Yang Chen, Huan He, Xiaoxiao Chen   +4 more
doaj   +1 more source

Controlled and impulsive compression of an entrapped air bubble during impact [PDF]

ISOPE (2022) I-22-326, ISBN 978-1-880653-81-4, 2022
Wave slamming onto a structure is often accompanied by the entrapment of an air pocket. A large scale impact typically has a rapidly evolving and disturbed liquid-gas interface, such that several bubbles are entrapped upon impact. While it is largely understood how the peak pressure is created by liquid coming into contact with the solid structure, it ...
arxiv  

Current Trends and Future Perspective for Cold Spray Metal‐Ceramic Composites

Advanced Engineering Materials, EarlyView.
The use of cold spray (CS) technology for creating cermet deposits, combining ceramic and metallic components, is advancing rapidly. Cermets offer excellent temperature handling and erosion resistance for diverse applications. This review outlines the current state of the art, focusing on the deposition dynamics and strategies to optimize the ...
Romario A. Wicaksono, Amir Ardeshiri Lordejani, Sara Bagherifard   +2 more
wiley   +1 more source

Similarity solution of the shock wave propagation in water [PDF]

Applied and Computational Mechanics, 2007
This paper presents the possibility of calculation of propagation of a shock wave generated during the bubble collapse in water including the dissipation effect.
Muller M.
doaj  

Development of a Novel Processing Route for Dispersoid/Precipitation‐Strengthened High Conductive Copper Alloys by Using Metalized Nanoceramics in Additive Manufacturing

Advanced Engineering Materials, EarlyView.
This study explores a process chain to produce dispersoid‐strengthened CuCr1Zr for applications requiring high strength and conductivity. Using gas‐atomized powder and copper‐plated alumina nanoparticles, additive manufacturing is performed via powder bed based additive manufacturing with green and red lasers, followed by heat treatment.
Heinrich von Lintel, Abdelrahman Elsayed, Lukas Mielewczyk, Katja Eichmann, Julia Grothe, Ulrich Krupp, Avinash Hariharan, Katrin Jahns   +7 more
wiley   +1 more source

Effect of the liquid temperature on strong compression of a cavitation bubble

Учёные записки Казанского университета: Серия Физико-математические науки, 2019
The influence of the liquid temperature in the range of 273.15–419 K on the vapor compression inside a collapsing cavitation bubble in acetone has been studied. The liquid pressure is 50 bar.
A.A. Aganin, T.F. Khalitova
doaj   +1 more source

Dimensionless Investigations on Energy Conversion and Analysis of Interlayer Time in Laser‐Based Powder Bed Fusion of Polymers for Polyamide 12 with Nanoadditives and Polypropylene

Advanced Engineering Materials, EarlyView.
This study explores the energy conversion in powder bed fusion of polymers using laser beam for polyamide 12 and polypropylene powders. It combines material and process data, using dimensionless parameters and numerical models, to enable the prediction of suitable printing parameters.
Christian Schlör, Moritz Grünewald, Kevin Popp, Ihsan Murat Kusoglu, Stephan Barcikowski, Stan Gann, Thomas Schuffenhauer, Martin Bastian, Claas Bierwisch, Johannes Rudloff   +9 more
wiley   +1 more source