Results 21 to 30 of about 145,295 (166)

Measurement of Welding Residual Stresses of Reactor Vessel by Inherent Strain Method

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 2007
The objective of this study is to ensure safety of nuclear reactors. A few accidents of leaks from welded zones at pipe penetration parts of reactor vessel or in coolant pipes have been reported around the world. One of the main causes of such leaks is welding residual stress.
Keiji NAKACHO, Takahiro OHTA, Naoki OGAWA, Ninshu MA, Hiromitsu HAMAGUCHI, Mineki SATOU, Michisuke NAYAMA   +6 more
openaire   +2 more sources

Limitations of the inherent strain method in simulating powder bed fusion processes

Additive Manufacturing, 2018
Abstract Process optimization has always been a crucial step for effective usage of metal additive manufacturing (AM) processes: it consists in establishing quantitative relations between final part's characteristics and process parameters to find their optimal combination and obtain a fully functional mechanical component. Experimental investigation
Bugatti, Matteo, Semeraro, Quirico
openaire   +2 more sources

Welding Deformation Analysis, Using an Inherent Strain Method for Friction Stir Welded Electric Vehicle Aluminum Battery Housing, Considering Productivity

Applied Sciences, 2019
With the rise of electric vehicles, the use of battery modules, which are key units that drive vehicles, is increasing. The battery housing is the final form of a battery system mounted on electric vehicles, and is generally made of aluminum alloys ...
Sungwook Kang, Jaewoong Kim, Youngjae Jang, Kwangjin Lee   +3 more
doaj   +1 more source

Precision simulation and rapid prediction of complex parts formed by laser powder bed fusion based on multi-scale inherent strain method

Virtual and Physical Prototyping
Laser Powder Bed Fusion (LPBF) achieves layer-by-layer manufacturing of metal parts by melting metal powder using a high-energy laser beam. In response to the low accuracy and efficiency of the traditional inherent strain method in predicting residual ...
Peng Dai, Bo Qian, Man Zhao, Hao Zhou, Qingsong Wei, Zhongliang Lu, Steven Y. Liang   +6 more
doaj   +1 more source

Mechanism clarification and mitigation measures of radial deformation induced by girth welding of thin-walled pipes

Journal of Materials Research and Technology
Girth welding is extensively utilized in connecting pipeline structures. Excessive welding deformation may result in a decrease in ultimate bearing capacity and fatigue life.
Ze Chen, Yong Liu, Ping Wang, Hongliang Qian, Ninshu Ma   +4 more
doaj   +1 more source

Thermal distortion analysis method for TMCP steel structures using shell element

International Journal of Naval Architecture and Ocean Engineering, 2009
As ships become larger, thicker and higher tensile steel plate are used in shipyard. Though special chemical compositions are required for high-tensile steels, recently they are made by the TMCP (Thermo-Mechanical control process) methodology.
Yunsok Ha, S.R. Rajesh
doaj   +1 more source

Numerical Simulation Study on Welding Process of Upper Frame of Hydropower Unit

Applied Sciences
To optimize the welding process of the upper frame of the hydropower unit, a thermal elastic–plastic (TEP) finite element model of the typical T-joint of the upper frame was established, and the effectiveness and accuracy of the model were verified by ...
Chenlei Yu, Jun Pan, Junzhao Han, Jianfeng Ma, Weiliang Zhang   +4 more
doaj   +1 more source

High temperature performance of additively manufactured Al 2024 alloy: Constitutive modelling, dynamic recrystallization evolution and kinetics

Journal of Materials Research and Technology, 2023
The current study investigates the high-temperature deformation behaviour, and microstructural evolution of the laser powder bed fused, Ti modified Al 2024 alloy.
Saurabh Gairola, Gaurav Singh, R. Jayaganthan, Joe Ajay   +3 more
doaj   +1 more source

A Multipath Process-Based Inherent Strain Method for Prediction of Deformation of Hull Plate for Integrated Heating and Mechanical Rolling Forming Process

Journal of Marine Science and Engineering
Integrated heating and mechanical rolling forming (IHMRF) has recently been introduced for manufacturing complex curvature hull plates. It fabricates the target curved plate by sequential loading along the multipath.
Zhenshuai Wei, Yao Zhao, Hua Yuan, Lichun Chang   +3 more
doaj   +1 more source

Numerical Prediction of Welding Distortion Considering Gravity Force on General Ship Grillage Structure by Elastic Finite Element Method Using Inherent Strain

Journal of Marine Science and Engineering, 2020
The accurate numerical prediction of welding deformation is important to improve the structural safety of ships and offshore structures in heavy industries.
Donghan Woo, Mitsuru Kitamura
doaj   +1 more source