Results 51 to 60 of about 2,888 (228)

Exploiting Device Deformability for Fluid and Particle Manipulation

Small, EarlyView.
Deformable devices enable fluid and particle manipulation modes that are inaccessible to rigid platforms. This review examines soft materials and architectures that translate controlled deformation into microscale fluid operations such as pumping, valving, mixing, and particle handling.
Zhiyang Hong, Xiaoyue Kang, Dan Yuan, Nam‐Trung Nguyen, Jun Zhang   +4 more
wiley   +1 more source

Laser assisted arc welding process for dry hyperbaric deep water application [PDF]

, 2013
Hyperbaric Gas Metal Arc Welding (GMAW) is an important technology for repair welding of deep sea pipelines and linking of existing pipeline networks to newer ones through tie-ins and hot-tap welding.
Ofem, Usani Unoh
core  

Crash Behavior of DP800–DP1000 Advanced High‐Strength Steel’s Dissimilar Resistance Spot Welded Joints Under Quasi‐static and High Strain Rates

steel research international, EarlyView.
The high‐strain‐rate behavior of resistance spot‐welded DP800–DP1000 joints is investigated. Results show that microstructural gradients across BM–HAZ–FZ govern hardness, strain rate sensitivity, and failure modes. While strength increases with strain rate, energy absorption is controlled by ductility, with DP800–DP800 joints showing superior ...
Pankaj Shrivastava, Velaphi Msomi
wiley   +1 more source

Laser hybrid welding of high strength steels [PDF]

, 2001
This paper presents results from an ongoing investigation into laser-arc-hybrid welding of thick, high strength steels used in the heavy mechanical and heavy automotive industries.
Engström, Hans, Gustavsson, B., Nilsson, Tony, Anders Skirfors, Bertil Gustavsson, Skirfors, Anders, Hans Engström, Klas Nilsson, Jan Flinkfeldt, Nilsson, Klas, Tony Nilsson, Flinkfeldt, Jan   +11 more
core   +1 more source

Narrow Gap Welding of X80 Steel Using Laser-CMT Hybrid Welding with Misaligned Laser and Arc

Crystals, 2022
The feasibility of using laser-cold metal transfer (CMT) misaligned hybrid welding to join an X80 line-pipe steel in a narrow gap configuration was investigated.
Bofang Zheng, Yang Li, Sansan Ao, Xianlong Zhang, Di Zhang, Sunusi Marwana Manladan, Zhen Luo, Yue Yang, Yuanbo Bi   +8 more
doaj   +1 more source

Mobile electromagnetic levitator for time‐resolved in situ X‐ray diffraction studies of high‐temperature phase transformations

Journal of Synchrotron Radiation, EarlyView.
A mobile electromagnetic levitator combined with time‐resolved synchrotron X‐ray diffraction enables in situ studies of high‐temperature phase transformations without container‐induced contamination and reveals the first direct observation of metastable phase formation in undercooled Fe–Co alloys.In situ observations of high‐temperature transformations,
Olga Shuleshova, Ivan Kaban, Steffen Ziller, Uwe Reinhold, Ann-Christin Dippel, Olof Gutowski, Martin von Zimmermann   +6 more
wiley   +1 more source

Techno-economic evaluation of reducing shielding gas consumption in GMAW whilst maintaining weld quality [PDF]

, 2012
A new method of supplying shielding gases in an alternating manner has been developed to enhance the efficiency of conventional gas metal arc welding (GMAW).
Campbell, Stuart, Galloway, Alexander, McPherson, Norman   +2 more
core   +1 more source

Volatile alloying elements modulate laser-induced arc stability: A material-dependent interaction mechanism

Journal of Materials Research and Technology
It is generally known that a laser can stabilize an arc. However, some numerical studies suggested that the laser-induced metal vapor decreased the temperature and electrical conductivity of arc plasma in hybrid laser-arc processing.In this study, the ...
Xiao Xiao, Chi Zhang, Shuaijun Bai, Dongsheng Wu, Hisaya Komen, Keke Zhang, Shigeaki Uchida, Manabu Tanaka   +7 more
doaj   +1 more source

The Theory of Critical Distances for Predicting the Static Failure of Double‐Lap Bolted Joints With Conventional and Additively Manufactured 316L Stainless Steel Inner Plates

Fatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT This study assesses the accuracy of the theory of critical distances applied in the form of the point method in predicting the static strength of 316L stainless steel double‐lap shear bolted connections under static tensile loading. Single‐ and double‐bolt configurations were tested using inner plates manufactured from conventional material ...
Hasan Almuhanna, Giacomo Torelli, Luca Susmel   +2 more
wiley   +1 more source

Feasibility and optimization of dissimilar laser welding components [PDF]

, 2008
Demands placed on dissimilar metals joints have increased from various viewpoints, such as, environmental concerns, energy saving, high performance, cost saving and so on.
Hassan, Ezzeddin Mohamed
core