Procedure in Reduction of Distortion in Welding Process by High Temperature Thermal Transient Tensioning

Souto, José R. A.; Ares, E.; Alegre, P.

doi:10.1016/j.proeng.2015.12.554

Cited by 11 publications

(8 citation statements)

References 6 publications

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“…The experiments were performed at the AIMEN Technology Centre facilities. The results from the experimental tests were used to validate the numerical models [ 17 ].…”

Section: Methodsmentioning

confidence: 99%

“…In this work, the maximum vertical deflection was chosen as a reference to verify the accuracy of the FEM model chosen. The experimental results were used to validate the FEM model and to generate the htTTT numerical model [ 17 ].…”

Section: Methodsmentioning

confidence: 99%

“…The numerical model was based on the mathematical description from [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ]. The model of the htTTT process was developed incorporating the flame torches to the weld process.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Methodology to Reduce Distortion Using a Hybrid Thermal Welding Process

et al. 2018

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Welding is a thermal process which results in high strain and stress values in the material and leads to its change of phase. This might cause significant distortions in the welded structure, which often becomes a relevant design and manufacturing issue. This study deals with a line-heating-based forming process that is applied at the moment of the welding operation, with the final objective of minimizing distortion. A FEM (finite element method) based on a thermo-elastoplastic approach is used here. The computational method is first calibrated in three stages: heatline forming calibration, flame heat source calibration, and the weld process. The final model presented in this work simulates a hybrid process called htTTT (high-temperature thermal transient tensioning) which was optimized over large T welds to minimize the final distortion of the components.

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“…The experiments were performed at the AIMEN Technology Centre facilities. The results from the experimental tests were used to validate the numerical models [ 17 ].…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Methodology to Reduce Distortion Using a Hybrid Thermal Welding Process

et al. 2018

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“…It is suitable for flux core arc welding at panel line workshop and consists in performing symmetrical heating together with the welding process by using propane torches. [1] As welding is a process which is largely used in the marine industry, every shipyard faces distortion problems. In order to reduce it`sits impact, a lot of research has been performed and some patents were developed on the topic by Japanese, Chinese and Russian researchers.…”

Section: Fig 3 Flame Straightening Priority In Shipyardmentioning

confidence: 99%

“…This aspect has great importance in the shipbuilding industry, due to its high cost for countermeasure, estimated by the Navy Joining Centre (EEUU) to almost 25% of the total expenditure on assembly work. [1].…”

Section: Introductionmentioning

confidence: 99%

Review on distortion over welded structures

Iatan

Burlacu

2019

AnnUGalShipBuilding

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Since welding started to be used on a large-scale basis in engineering, distortion has become a stringent problem for the industry, mostly for shipyards. This paper aims at bringing together the result of large amount of research on distortion and mitigation techniques, in order to support further practical research on the topic. Phenomena, such as mostly used treatments for reducing distortion were explained in detail. In addition to this, inherent strain theory was presented for offering a starting point to those who shall perform thermal analysis in welded structures.

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