Mitigating Potential Hazards of TIG Welding on Spacecraft

Bodeau, Michael

doi:10.1109/temc.2018.2813331

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…The nature of electrical transients created by arc welding, i.e. the magnitude and length of the transient induced in propulsion lines and conveyed to interface circuits, is discussed by Bodeau (2018). Various mitigation approaches for TIG welding have been presented for various circuit types in order to mitigate or eliminate potential damage.…”

Section: Related Workmentioning

confidence: 99%

Classification of weld defects using machine vision using convolutional neural network

Kanthalakshmi

Pradeepa

2023

The Scientific Temper

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Welding is an important aspect in commercial use of almost every industry. Because weld flaws can cause irregularities or inconsistencies during welding process, welding quality control is a critical step in ensuring the product’s quality and overall longevity. This study focuses on recognizing contamination defects, lack of fusion defects, or if the weld belongs to the good weld category among the defects that occur during the welding process. This category categorization is carried out for the Convolutional Neural Network (CNN) algorithm and the accuracy metric is obtained to evaluate the efficiency of the algorithm for the 3 – class dataset. According to this research, the pure CNN approach gave an accuracy result of 96.1%.

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Section: Related Workmentioning

confidence: 99%

Classification of weld defects using machine vision using convolutional neural network

Kanthalakshmi

Pradeepa

2023

The Scientific Temper

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“…MW plasma using solid-state technology can now sustain transmission efficiencies of >70% with ten times longer lifetimes than magnetron technologies, which degrade in performance comparatively quickly over time. The electromagnetic shielding of high-frequency MW discharges is also much more straightforward than low-frequency plasma devices, which present a considerable challenge in terms of minimizing electromagnetic interference (EMI) to neighboring electronics (e.g., EMI from arc welders operating at DC and kHz AC is a common nuisance 59,60 ). We therefore believe that MW plasma generated with state-of-the-art low-mass, small-footprint solid-state amplifiers is the ''technology of choice'' for future missions deploying plasma-based gas-conversion technologies to Mars and beyond.…”

Section: The Bigger Picturementioning

confidence: 99%

Producing oxygen and fertilizer with the Martian atmosphere by using microwave plasma

Kelly

Verheyen²,

Cowley³

et al. 2022

Chem

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“…Argon arc welding [27][28][29][30][31][32][33][34][35][36][37], which is currently used in repairs, is characterized by increased heat input in the welded parts and insufficient concentration of the heat source, compared to laser welding [38][39][40][41][42][43][44][45]. The shape coefficient of the weld (the ratio of the width of the weld to its depth of penetration) in argon arc welding is 2…4.…”

Section: Introductionmentioning

confidence: 99%

Research of Technology for Repair of Heat Exchangers of Nuclear Power Plants by Laser Welding

Bernatskyi

Sydorets

Berdnikova

et al. 2021

SSP

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Extending the lifetime of energy facilities is extremely important today. This is especially true of nuclear power plants, the closure (or modernization) of which poses enormous financial and environmental problems. High-quality repair of reactors can significantly extend their service life. One of the critical parts is heat exchangers, the tubes of which quite often fail. Sealing, as a type of repair of heat exchanger tubes by the plugs, is promising provided that the joint quality is high. Practical experience in the use of welding to solve this problem has shown the need to search technological solutions associated with increasing the depth of penetration and reducing the area of thermal effect. The aim of the work was to develop a highly efficient technology for repair and extension of service life of heat exchangers of nuclear power plants based on the results of studying the technological features of laser welding of joints of dissimilar austenitic steels AISI 321 and AISI 316Ti in the vertical spatial position. Based on the results of the analysis of mechanical test data, visual and radiographic control, impermeability tests and metallographic studies of welded joints, the appropriate modes of laser welding of plugs have been determined. The principal causes of defects during laser welding of annular welded joints of dissimilar stainless steels are determined and techniques for their elimination and prevention of their formation are proposed. Based on the results of the research, technological recommendations for laser welding of plugs in the heat exchange tube of the collector are formulated, which significantly improves the technology of repair of steam generators of nuclear power plants and extends the service life of reactors.

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Mitigating Potential Hazards of TIG Welding on Spacecraft

Cited by 4 publications

References 3 publications

Classification of weld defects using machine vision using convolutional neural network

Classification of weld defects using machine vision using convolutional neural network

Producing oxygen and fertilizer with the Martian atmosphere by using microwave plasma

Research of Technology for Repair of Heat Exchangers of Nuclear Power Plants by Laser Welding

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