Comparison of RSM and ANN model in the prediction of the tensile shear failure load of spot welded AISI 304/316 L dissimilar sheets

Vigneshkumar, M.; Varthanan, P. Ashoka

doi:10.1504/ijcmsse.2019.102292

Cited by 14 publications

(7 citation statements)

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“…At present, the industries are aiming to minimize the cost together weight with a compromise between of high performance and safety. The welding process was achieved by an enormous electric current flow through touching the sheet metals to heat up and compose a molten nugget [3][4][5] . Regularly, the steel body of the vehicle usually contains about 5,000 spot welds to join sheets of various thickness, and the spot welds quality dramatically influence the reliability and safety of an automotive structure 6,7 .…”

Section: Introductionmentioning

confidence: 99%

Effect of Welding Parameters of Resistance Spot Welding on Mechanical Properties and Corrosion Resistance of 316L

et al. 2022

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The purpose of this research is to analyze the mechanical properties and corrosion resistance of spot welding of stainless steels AISI 316L using the process of resistance spot welding varying welding parameters with three level for each of welding parameter; welding current (A.), electrode Pressure (bar), squeeze time (s.), and welding time (s.). The welding current was (4500, 5500 and 6500) A, the electrode Pressure was (20, 30 and 40) bar, the squeeze time was (0.6, 0.8 and 1) Sec., and the welding time was (0.3, 0.6 and 0.9) Sec. The specimens were inspected by a tensile-shear test, corrosion test and the inspection of scanning electron microscope (SEM). The technique of design of the experiments (DOE) was utilized to examine the influence of the welding process parameters on the joint tensile-shear force. The results were analyzed by the DOE method to determine the optimum tensile-shear force, where can be obtained by utilizing the welding parameters by welding current 5500A, electrode pressure of 30 bar, squeeze time 0.8s., and welding time of 0.3s. The examination of SEM indicated that the increment of welding current and electrode pressure leads to increment pitting and corrosion rate.

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Section: Introductionmentioning

confidence: 99%

Effect of Welding Parameters of Resistance Spot Welding on Mechanical Properties and Corrosion Resistance of 316L

et al. 2022

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“…For establishing a relation between the explanatory variables and target variables, both machine learning models such as artificial neural networks and low-order polynomials have been used by the research community to create or fit a response surface to the available data. Data have been usually collected by some kind of design-of-experiments methods such as factorial, central composite, or Taguchi's designs [67].…”

Section: Process Optimization-open Loop Methodsmentioning

confidence: 99%

Quality Assurance in Resistance Spot Welding: State of Practice, State of the Art, and Prospects

Stavropoulos,

Sabatakakis

2024

Metals

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Resistance spot welding is a process with high variability regarding the quality of the produced joints. This means that key performance indicators (KPIs) such as geometrical and mechanical features as well as failure modes can deviate from the initial design even if the same process parameters are used. The industry has developed quality assurance programs and quality control methods for tracking these KPIs; however, most of them are based on offline or/and destructive practices. On the other hand, state-of-the-art approaches have made online quality assessment feasible and proved its necessity if a 100% quality rate is required. However, limited attention has been given to “closing the loop” and providing feedback for preventing and correcting process anomalies that cause quality variations in real time. In this study, the main gaps between the state of practice and the state of the art are discussed in the context of quality assurance for resistance spot welding. Finally, the role and importance of digital twins by taking into consideration the entire welding ecosystem in quality assurance are discussed in order to form the prospects for the road ahead.

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“…Design expert software is used for experimental design of RSM based on central composite design as well as statistical analysis [18]. In the present work, peening pressure and peening distance from specimen to nozzle are the two factors considered for analysis.…”

Section: Design Matrixmentioning

confidence: 99%

Investigation of fatigue strength of aluminium 2024-T3 subjected to shot peening process by Ni shots

Rajesh¹,

Varthanan²

2020

Mater. Res. Express

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Aluminium alloys are most suitable for light weight applications. This research paper investigates the fatigue strength of Aluminium alloy 2024-T3 after shot peeing process using nickel shots. Nickel shots are used in this research to investigate the influence of nickel on the fatigue strength of aluminum 2024-T3 alloy. Compressed air is used for shot peening process. Shot peening process parameter values are chosen based on response surface method (RSM) to conduct the experiments. Desirability approach is used to get the optimized values of process parameters. High cycle fatigue testing is performed to find the fatigue strength of specimens before and after shot peening process. An increase in the fatigue strength up to 34% is observed after peening using the nickel shots. FESEM and EDS tests revealed the presence of nickel on the surface of aluminium 2024-T3 specimen after shot penning with nickel shots.

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Comparison of RSM and ANN model in the prediction of the tensile shear failure load of spot welded AISI 304/316 L dissimilar sheets

Cited by 14 publications

References 0 publications

Effect of Welding Parameters of Resistance Spot Welding on Mechanical Properties and Corrosion Resistance of 316L

Effect of Welding Parameters of Resistance Spot Welding on Mechanical Properties and Corrosion Resistance of 316L

Quality Assurance in Resistance Spot Welding: State of Practice, State of the Art, and Prospects

Investigation of fatigue strength of aluminium 2024-T3 subjected to shot peening process by Ni shots

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