Results 1 to 10 of about 5,676 (264)
Weld formation during material extrusion additive manufacturing [PDF]
Soft Matter, 2017 A combination of thermography, rheology, and fracture mechanics captures weld formation during the material extrusion process.
Jonathan E Seppala +2 more
exaly +5 more sources
Weld Formation in Laser Hot-Wire Welding of 7075 Aluminum Alloy [PDF]
Metals, 2018 The laser hot-wire welding process was adopted to weld 7075 high-strength aluminum alloy. The influence laws of parameters on the weld formation were analyzed during laser hot-wire welding, and the microstructure characteristics and mechanical properties
Shichun Li, Wei Xu, Gang Xiao, Bing Chen
doaj +2 more sources
Effect of narrow groove MAG welding oscillation parameters on weld formation
Journal of Hebei University of Science and Technology, 2017 In order to solve the problem of narrow groove wall fusion, improving the weld formation, the welding test of different oscillation width and frequency is carried out by adopting the narrow high-speed swing MAG welding torch.
Yu LUO +4 more
doaj +2 more sources
Nanomodification is an effective methodfor forming the structure of the weld metal. Part II. [PDF]
Нанотехнологии в строительстве, 2020 The short-term existence of the melt in the weld pool and its overheating, a large temperature gradient near the interface and two-dimensional crystallization centers, in the form of fused grains at the weld pool boundary, reduce the probability and rate
Sizintsev Sergey Valerievich +3 more
doaj +1 more source
Modeling of chemical composition in the melt pool during laser welding of Aluminum / Magnesium alloys [PDF]
E3S Web of Conferences, 2021 Joining dissimilar metals is very difficult due to the formation of brittle intermetallic phases which may be detrimental to mechanical properties. The present work aims to investigate the transport phenomenon in the weld bead and to understand the ...
Ben Halim Sabrine +2 more
doaj +1 more source
Applied Sciences, 2023 The basic principle of ultrasound is to relate the time of flight of a received echo to the location of a reflector, assuming a known and constant velocity of sound.
Michał K. Kalkowski +5 more
doaj +1 more source
Formation mechanism of SH guided wave in weld seam
Results in Physics, 2020 Shear horizontal (SH)-guided wave detection of weld seams is a new type of weld detection technology. To better apply SH-guided waves to weld detection, it is necessary to study the formation mechanism of SH-guided waves and to identify weld structures ...
Xiaolong Zhang, Zhenying Xu
doaj +1 more source
Sensors, 2023 Abnormal formation of girth weld is a major threat to the safe operation of pipelines, which may lead to serious accidents. Therefore, regular inspection and maintenance of girth weld are essential for accident prevention and energy security.
Rui Li +3 more
doaj +1 more source
Metals, 2021 In the investigation at hand, sheets of ferritic and pearlitic grey cast iron with spheroidal graphite are welded using a fiber-laser. The influence of varying laser power and welding speed on the macroscopic characteristics of the weld seam and crack ...
Niklas Sommer +3 more
doaj +1 more source
Fault welding by pseudotachylyte formation [PDF]
Geology, 2016 Abstract During earthquakes, melt produced by frictional heating can accumulate on slip surfaces and dramatically weaken faults by melt lubrication. Once seismic slip slows and arrests, the melt cools and solidifies to form pseudotachylytes, the presence of which is commonly used by geologists to infer earthquake slip on exhumed ancient ...
Mitchell, Thomas M. +4 more
openaire +3 more sources