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Role of fixture for...
Role of fixture forces on distortion in gas tungsten arc welding - an experimental and modelling approach
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- Sikström, Fredrik, 1971- (författare)
- Högskolan Väst,Avd för elektro- och automationsteknik,PTW
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- Christiansson, Anna-Karin, 1947- (författare)
- Högskolan Väst,Avd för elektro- och automationsteknik,PTW
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- Lennartson, Bengt, 1956 (författare)
- Högskolan Väst,Avd för elektro- och automationsteknik,Avdelningen för produktionssystem (PS),PTW
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(creator_code:org_t)
- Sage Publications, 2011
- 2011
- Engelska.
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Ingår i: Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. - : Sage Publications. - 0954-4054 .- 2041-2975. ; 225:B1, s. 140-148
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Abstract
Ämnesord
Stäng
- Simulation and experiments show that the fixture clamping force has a significant influence on the structural integrity of a welded workpiece. This understanding is of great importance for the manufacture of aerospace components with tight tolerances in the specifications. The focus in the present study is on the temperature history during welding and residual deformation; its main contribution is a demonstrator designed for evaluation of the influence of fixture clamping forces and validation of the simulation results. The demonstrator concerns a simplified situation considering gas tungsten arc welding of a nickel-based metal plate fixed by a specially designed fixture, where one side of the plate was clamped with different levels of force. The temperature history was measured during the weld sequence and deformation measurements were performed after cooling and release of the workpiece from the fixture. The results from simulation and experimentation showed good agreement. The proposed strategy is industrially competitive and has shown that the looser the fixture clamps, the smaller the residual deformation. Furthermore, the study provides a knowledge base for selection of active fixture concepts in that the fixture clamping force can be determined in advance and possibly also be subject to force control.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Nyckelord
- gas tungsten arc welding
- finite element analysis
- heat-transfer model
- nickel-based steel
- fluid-flow
- alloys
- joint
- fixture clamping force
- residual deformation
- deformation
- stresses
- Other processing/assembly
- Manufacturing and materials engineering
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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