scholarly journals Experimental and numerical analysis of residual stress in carbon-stabilized expanded austenite

2018 ◽  
Vol 157 ◽  
pp. 106-109 ◽  
Author(s):  
Yawei Peng ◽  
Zhe Liu ◽  
Yong Jiang ◽  
Bo Wang ◽  
Jianming Gong ◽  
...  
Keyword(s):  
Residual Stress ◽  
Numerical Analysis ◽  
Expanded Austenite

scholarly journals Measurement and tailoring of residual stress in expanded austenite on austenitic stainless steel

2017 ◽  
Vol 701 ◽  
pp. 167-173 ◽  
Author(s):  
Frederico A.P. Fernandes ◽  
Thomas L. Christiansen ◽  
Grethe Winther ◽  
Marcel A.J. Somers
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Expanded Austenite

Numerical Analysis of Surface Residual Stress of NC Milling 7075-T7451 Aluminum Alloy

2009 ◽  
Vol 407-408 ◽  
pp. 718-722
Author(s):  
Hong Feng Wang ◽  
Dun Wen Zuo ◽  
Li Tao Wang ◽  
Hong Miao ◽  
Hong Jun Wang
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Numerical Analysis ◽  
Mathematic Model ◽  
Regression Testing ◽  
Surface Residual Stress ◽  
Orthogonal Regression ◽  
Milling Parameters ◽  
Finished Surface ◽  
Nc Milling

The mathematic model was established between finished surface residual stress and milling parameters by orthogonal regression testing. The rationality of the model was certified by FEM and test. The simulation hypothesis and process were verified by the model. The test showed that the model and FEM were feasible.

ENPOWER: Investigations by Neutron Diffraction and Finite Element Analyses on Residual Stress Formation in Repair Welds Applied to Ferritic Steel Plates

2005 ◽  
Author(s):  
Carsten Ohms ◽  
Robert C. Wimpory ◽  
Dimitar Neov ◽  
Didier Lawrjaniec ◽  
Anastasius G. Youtsos
Keyword(s):  
Experimental Data ◽  
Residual Stress ◽  
Numerical Analysis ◽  
Neutron Diffraction ◽  
Stress Field ◽  
Ferritic Steel ◽  
Maximum Stress ◽  
Steel Plates ◽  
Residual Stress Field ◽  
Welding Procedure

The European collaborative research project ENPOWER (Management of Nuclear Plant Operation by Optimizing Weld Repairs) has as one of its main objectives the development of guidelines for the application of repair welds to safety critical components in nuclear power plants. In this context letter box repair welds applied to thin ferritic steel plates to simulate repair of postulated shallow cracks have been manufactured for the purpose of experimental and numerical analysis of welding residual stresses. Two specimens have been procured, one of them prepared in accordance with a standard welding procedure, while in the second case a different procedure was followed in order to obtain extended martensite formation in the heat affected zone. Residual stresses have been determined in both specimens by neutron diffraction at the High Flux Reactor of the Joint Research Centre in Petten, The Netherlands. In parallel Institut de Soudure in France has performed a full 3-d analysis of the residual stress field for the standard welding case taking into account the materials and phase transformations. The experimental data obtained for both specimens clearly suggest that the non-conventional welding procedure rendered higher maximum stress values. In the case of the standard welding procedure numerical and experimental data show a reasonable qualitative agreement. The maximum stress value was in both cases found in the same region of the material — in the base metal just underneath the weld pool — and in both cases found to be of similar magnitude (∼800 MPa found in neutron diffraction and ∼700 MPa found in numerical analysis). In this paper the experimental and numerical approaches are outlined and the obtained results are presented. In addition an outlook is given to future work to be performed on this part of the ENPOWER project. A main issue pending is the application of an optimized advanced post weld heat treatment in one of the two cases and the subsequent numerical and experimental determination of its impact on the residual stress field. At the same time further evaluation of the materials transformations due to welding is pursued.

scholarly journals A residual stress measurement and numerical analysis round robin on a three-pass slot nickel-base repair weld

2020 ◽  
Vol 51 ◽  
pp. 779-786
Author(s):  
Vasileios Akrivos ◽  
Mike C Smith ◽  
Ondrej Muransky ◽  
Carsten Ohms ◽  
Anastasios Youtsos
Keyword(s):  
Residual Stress ◽  
Numerical Analysis ◽  
Stress Measurement ◽  
Round Robin ◽  
Residual Stress Measurement ◽  
Nickel Base
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