Results 91 to 100 of about 27,379 (235)

Keyhole fluctuation and pore formation mechanisms during laser powder bed fusion additive manufacturing

, 2022
Keyhole porosity is a key concern in laser powder-bed fusion (LPBF), potentially impacting component fatigue life. However, some keyhole porosity formation mechanisms, e.g., keyhole fluctuation, collapse and bubble growth and shrinkage, remain unclear ...
Huang, Yuze; id_orcid, Marussi, Sebastian, Lee, Peter D., Thiyagalingam, Jeyan, Fezzaa, Kamel, Lee, Peter D, Leung, Chu Lun Alex, Clark, Samuel J., Clark, Samuel J, Huang, Yuze, Fleming, Tristan G, Fleming, Tristan G.   +11 more
core   +1 more source

Elucidating the spatially asymmetric fluctuation behavior of the keyhole during laser melting

Journal of Materials Research and Technology
The process stability and formation quality are directly affected by the keyhole fluctuation behavior during laser welding and laser additive manufacturing.
Yu Wang, Chu Han, Shaoning Geng, Ping Jiang, Liangyuan Ren   +4 more
doaj   +1 more source

Parastomal Hernia: Rethinking Prevention and Repair in Contemporary Colorectal Surgery

ANZ Journal of Surgery, EarlyView.
Rathin Gosavi, Thang Chien Nguyen, Paul McMurrick, William Teoh, Vignesh Narasimhan   +4 more
wiley   +1 more source

Investigation of Nano-keyhole Cooling Evolution using Boubaker Polynomials Expansion Scheme (BPES)

Nano Biomedicine and Engineering, 2010
This study proposes an analytical expression for temperature evolution inside a nano-keyhole modeled device. Several assumptions have been taken into account.
M. Dada, Olufemi Folorunsho Moses, O. B. Awojoyogbe, K. Boubaker, K. Isah   +4 more
doaj   +1 more source

Modelling of keyhole dynamics and porosity formation considering the adaptive keyhole shape and three-phase coupling during deep-penetration laser welding

, 2011
The joint quality of deep-penetration laser beam welding is related to the keyhole behaviour, e.g. keyhole-induced porosities. In this paper, a model which considered the existence of three phases, including plasma gas, liquid metal and solid metal, was ...
Wenchong Niu, Haiyan Zhao, Takashi Ishide, Yongping Lei, Masaru Kodama, Bin Zhang   +5 more
core   +1 more source

Antenna Selection in Keyhole Channels

, 2005
—This letter presents two results for antenna selection under keyhole condition. First, we analyze the capacity of the antenna-selection keyhole channel.
Aria Nosratinia, Shahab Sanayei, Senior Member   +2 more
core  

Application of Nordic Keyhole and Nutri-Score for assessment of nutritional quality of plant-based dairy analogues

BMC Nutrition
Background Public interest in plant-based dairy analogues is increasing; thus, their assessment by front-of-pack nutrition labelling schemes such as Keyhole and Nutri-Score can facilitate the identification of products with optimal nutritional quality ...
Hanieh Moshtaghian, Elinor Hallström, Marta Bianchi, Susanne Bryngelsson   +3 more
doaj   +1 more source

Study of Corrosion Resistance of Hybrid Structure of DP980 Two-Phase Steel and Laser-Welded 6013-T4 Aluminum Alloy

Journal of Manufacturing and Materials Processing
The future of the automotive industry appears to hinge on the integration of dissimilar materials, such as aluminum alloys and carbon steel. However, this combination can lead to galvanic corrosion, compromising the structural integrity.
Antonio Faria Neto, Erica Ximenes Dias, Francisco Henrique Cappi Freitas, Cristina Sayuri Fukugauchi, Erick Siqueira Guidi, Marcelo Sampaio Martins, Antonio Jorge Abdalla, Marcelo dos Santos Pereira   +7 more
doaj   +1 more source

Keyhole laser spot welding

, 2002
Based upon a literature survey, a review is presented highlighting areas of research carried out into keyhole laser spot welding. The survey looks at parametric effects on weld geometry, types and formation of weld defects, the welding thermal cycle ...
Katayama, S., Kaplan, Alexander,, Matsunawa, A., Mizutani, M   +3 more
core  

Keyhole Welding: The Solid and Liquid Phases

, 2017
Deep penetration laser welding relies on the evaporation of material by a high power laser beam in order to drill a vapour capillary , usually referred to as a keyhole .
Kaplan, Alexander,, Alexander Kaplan
core   +1 more source