Results 51 to 60 of about 32,478 (295)

Carbon Fiber Reinforced Thermoplastics: From Materials to Manufacturing and Applications

open access: yesAdvanced Materials, EarlyView.
A contemporary and critical review on carbon fiber reinforced thermoplastics. The common thermoplastic and carbon fiber applied in the manufacture of carbon fiber reinforced thermoplastics are summarized, and the processing and postprocessing methods are reviewed, with emphasis on state‐of‐the‐art welding techniques.
Howard (Hao) Wang   +6 more
wiley   +1 more source

A novel inverter twin wires high effect submerged arc welding equipment for steel plate welding

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
Twin wires submerged arc welding technology is an efficient way for the high-speed welding of heavy workpiece of the low carbon steel. A novel inverter twin wires high effect submerged arc welding equipment is proposed by combination of the inverter ...
Kuanfang HE   +3 more
doaj   +1 more source

Bioinspired Mechanisms and Actuation of Soft Robotic Crawlers

open access: yesAdvanced Science, EarlyView.
Researchers have been developing soft materials and robotic crawlers inspired by soft‐bodied animals to mimic effective crawling in complex environments. This review explores the state‐of‐the‐art in soft crawlers, highlighting the interaction between materials, crawling mechanisms, actuation, and applications. The review concludes by providing insights
Min Pan   +6 more
wiley   +1 more source

Insulator fault feature extraction system of substation equipment based on machine vision

open access: yesIET Networks, EarlyView., 2022
Abstract The artificial intelligence technology and intelligent automation are more and more widely used, the insulators play a supporting and insulating role in the operation of the grid. The use of machine vision inspection technology to detect insulator faults has become an inevitable trend of the times.
Keruo Jiang   +4 more
wiley   +1 more source

Crystallographic effects on transgranular chloride-induced stress corrosion crack propagation of arc welded austenitic stainless steel [PDF]

open access: yesarXiv, 2022
The effect of crystallography on transgranular chloride-induced stress corrosion cracking (TGCISCC) of arc welded 304L austenitic stainless steel is studied on >300 grains along crack paths. Schmid and Taylor factor mismatches across grain boundaries (GBs) reveal that cracks propagate either from a hard to soft grain, which can be explained merely by ...
arxiv  

The univalent Bloch-Landau constant, harmonic symmetry and conformal glueing [PDF]

open access: yesJournal de Math\'ematiques Pures et Appliqu\'es Volume 92, Issue 4, October 2009, Pages 396-406, 2008
By modifying a domain first suggested by Ruth Goodman in 1935 and by exploiting the explicit solution by Fedorov of the Poly\'a-Chebotarev problem in the case of four symmetrically placed points, an improved upper bound for the univalent Bloch-Landau constant is obtained.
arxiv   +1 more source

Indium‐Doping Advances High‐Performance Flexible Ag2Se Thin Films

open access: yesAdvanced Science, EarlyView.
A “precursor doping strategy” is employed to realize In‐doping at Ag sites in Ag2Se thin films, boosting electrical conductivity while maintaining a high Seebeck coefficient, therefore achieving a high‐power factor of ≈26.3 µW cm−1 K−2 and ZT of ≈1.
Tianyi Cao   +12 more
wiley   +1 more source

Fume emission during the arc and laser welding of cast stainless austenitic steel

open access: yesMetalurgija, 2023
The article presents results of research on fume emission in relation to various arc welding methods (MAG standard, CMT, ColdArc and ColdArc Puls) and laser welding techniques (heat conduction and deep penetration welding).
J. Matusiak, J. Wycislik- Sosnierz
doaj  

Path Planning with Automatic Seam Extraction over Point Cloud Models for Robotic Arc Welding [PDF]

open access: yesarXiv, 2020
This paper presents a point cloud based robotic system for arc welding. Using hand gesture controls, the system scans partial point cloud views of workpiece and reconstructs them into a complete 3D model by a linear iterative closest point algorithm. Then, a bilateral filter is extended to denoise the workpiece model and preserve important geometrical ...
arxiv  

Schramm Loewner Evolution and Liouville Quantum Gravity [PDF]

open access: yes, 2010
We conformally weld (via "quantum zipping") two boundary arcs of a Liouville quantum gravity random surface to generate a random curve called the Schramm-Loewner evolution (SLE). We develop a theory of quantum fractal measures (consistent with the Knizhnik-Polyakov-Zamolochikov relation) and analyze their evolution under welding via SLE martingales. As
arxiv   +1 more source

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