Results 51 to 60 of about 7,216 (318)

Reuse of Grade 23 Ti6Al4V Powder during the Laser-Based Powder Bed Fusion Process

Metals, 2020
Titanium alloy powder used for laser-based powder bed fusion (L-PBF) process is costly. One of the solutions is the inclusion of a powder recycling strategy, allowing unused or exposed powder particles to be recuperated post manufacture, replenished and ...
Ryan Harkin, Hao Wu, Sagar Nikam, Justin Quinn, Shaun McFadden   +4 more
doaj   +1 more source

Investigation of recast and crack formation in laser trepanning drilling of CMSX-4 angled holes [PDF]

, 2018
This paper presents an experimental investigation on the influences of laser trepanning drilling process parameters on the recast layer thickness and surface crack formation in CMSX-4 nickel-based superalloy angled holes. The effects of peak power, pulse
A Corcoran, A Corcoran, A Horn, BS Yilbas, C Yeo, CA McNally, DKY Low, E Lugscheider, EW Kreutz, H Sezer, J Garofano, J Garofano, J Willach, John Nicholls, Jörn Mehnen, K Voisey, KPL Fullagar, M Schneider, M Schneider, ND Pandey, Nicolau Iralal Morar, PW French, R Bathe, R Goyal, Rajkumar Roy, S Bandyopadhyay, S Dimov, S Kumar, S Leigh, S Leigh, S Mishra, S Tam, Simon Gray, Sundar Marithumu, T Beck, Tracey Roberts, W Duan, WT Chien   +37 more
core   +1 more source

The Impact of High‐Productivity Processing on the Fatigue Failure of an Additive Manufactured Superalloy HAYNES 282

Advanced Engineering Materials, EarlyView.
The low cycle fatigue life of additive manufactured HAYNES® 282® superalloy was investigated for conventional and high‐productivity processing: samples of the former lasted 1400–1700 cycles, while samples of the latter failed at ~ 1200 cycles, at 760 °C and 1% strain.
Abdul Shaafi Shaikh, Ahmed Fardan, Tatiana Mishurova, Eduard Hryha   +3 more
wiley   +1 more source

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Deep Learning to Analyze Spatter and Melt Pool Behavior During Additive Manufacturing

Metals
To capture the complex metallic spatter and melt pool behavior during the rapid interaction between the laser and metal material, high-speed cameras are applied to record the laser powder bed fusion process and generate a large volume of image data.
Deepak Gadde, Alaa Elwany, Yang Du
doaj   +1 more source

Control of Porosity and Spatter in Laser Welding of Thick AlMg5 Parts Using High-Speed Imaging and Optical Microscopy

Metals, 2017
We report on a feedback mechanism for rapid identification of optimal laser parameters during welding of AlMg5 coupons using real-time monitoring by high-speed imaging.
Andrei C. Popescu, Christophe Delval, Marc Leparoux   +2 more
doaj   +1 more source

Binding and Normalization of Binary Sparse Distributed Representations by Context-Dependent Thinning [PDF]

, 2001
Distributed representations were often criticized as inappropriate for encoding of data with a complex structure. However Plate's Holographic Reduced Representations and Kanerva's Binary Spatter Codes are recent schemes that allow on-the-fly encoding of ...
Kussul, Ernst M., Rachkovskij, Dmitri A.
core   +1 more source

Laser Metal Deposition of Aluminum Alloys 7075 and 5083 with the Addition of Volatile Alloying Elements through Powder Blending

Advanced Engineering Materials, EarlyView.
This study investigates laser metal deposition of aluminum alloys EN AW‐7075 and EN AW‐5083, using powder blending to compensate zinc and magnesium evaporation. In situ alloying and ex situ alloying with ZnAl12 and AZ91 preserve near‐standard compositions and improve mechanical properties.
Finn Bendixen, Anastasiya Toenjes, Annika Bohlen, Thomas Seefeld   +3 more
wiley   +1 more source

Optical characteristics of Nd:YAG optics and distortions at high power [PDF]

, 2005
The intensity profile and beam caustics of a fiber coupled high power Nd:YAG laser beam through a lens system are studied. The thermal lensing effect and its influence on the beam profile and focal position are discussed.
Hofman, Johannes T., Lange, Dirk F. de, Meijer, Johan   +2 more
core   +1 more source

Efeito dos modos de transferência e da composição de gás de protecção na emissão de partículas ultrafinas na soldadura MAG de aços [PDF]

, 2008
The present study aims to characterize ultrafine particles emitted during gas metal arc welding of mild steel and stainless steel, using different shielding gas mixtures, and to evaluate the effect of metal transfer modes, controlled by both processing ...
Carolina Tobias Marino, Estela Jorge Alves da Silva, Laura Maria Oliveira Borgatti, Paula Marques Meyer, Paulo Henrique Mazza Rodrigues   +4 more
core   +4 more sources