... investigation out-of-plane welding distortion residual stress Journal of Ship Production and Design, Vol. 37, No. 2, May 2021, pp. 109 116 httpdx.doi.org/10.5957/JSPD.03200010 Experimental Investigations on ThermoMechanical Tensioning (TMT), comparison with Heat Sink, and Its Application to a Grillage...

...Yu-Ping Yang; T. D. Huang; Steve Scholler; Randy Dull; Charles R. Fisher; Wei Zhang Weld residual stresses on ship structures were significantly investigated by using a three-step approach. Step 1 is to measure residual stress on small samples in laboratories to validate measurement methods, step 2...

... an acceptable computation time on a common computer workstation. 1. Introduction Because of the intense concentration of heating during fusion welding, the welding seam and its vicinity undergo rapid heating and cooling, generating residual stress in the joint. Welding residual stress can be detrimental...

...Yu-Ping Yang; T. D. Huang; Harry J. Rucker; Charles R. Fisher; Wei Zhang; Michael Harbison; Steven T. Scholler; Jennifer K. Semple; Randal Dull Weld residual stress plays an important role in the production and operating performance of ship structures. Various factors such as background noise...

..., residual stresses and distortions occur in the welded components. These distortions are introduce in the block assembly process in shipbuilding. These unwanted distortions result in additional production cost because necessary rectification process and extra manpower are required. These also cause delays...

... at the joint. During and after welding, the surrounding deck material around the tie-downs must deform elastically to preserve dimensional continuity, creating residual stresses. Weld-induced residual stress is a major concern because the tie-downs are subject to cyclic, dynamic loading which could induce...

... et al. 2013a; Mandal et al. 2015). The nonuniform expansion and contraction of the weld metal and the surrounding parent metal induces distortions and residual stresses in the material. Because of this, the dimensional accuracy and the structural integrity of the welded structures are affected...

...Duncan Camilleri Hull penetration and openings are governed by standards, which ensure the structural integrity of the assembly. However, a number of stiffeners are usually welded to the panel, giving rise to welding residual stresses and distortion. This study identifies the optimal position...

... process, it may lead to structural distortions and residual stresses due to nonuniform thermal expansion and contraction of the weld metal and the adjoining the base material. Welding distortions adversely affect the dimensional accuracy of the welded structures and as a consequence act negatively...

...Zhi-yuan Wei; Yu-jun Liu; Rui Li; Ji Wang Thermal cutting and welding are usually applied on component sequentially in shipbuilding, and the coupling residual stresses will be induced during this continuous process, which make the residual stress distribution different to that induced by single...

... corresponding production monitoring heat source ship structure MPa production control Modeling & Simulation deformation distribution boundary condition experimental study steel plate laser cutting ship production numerical result residual stress Reservoir Surveillance cutting numerical...

... distortions in the fabrication of orthogonal stiffened panels as used in shipbuilding was conducted. A method of in-process distortion mitigation technique, named as thermo-mechanical tensioning (TMT) was introduced to reduce the compressive residual stress in the far-field zone. The detail stress development...

... experimental and numerical results. The vertical deflection, transverse shrinkage, and longitudinal residual stress were considered to validate the present model. After validating the model, the longitudinal, transverse, and normal plastic strains were collected from flange, web, and weld bead portions...

... life mechanics steel structural detail loading assessment residual stress Life Assessment ship structure committee Welding proceedings ship production propagation Journal of Ship Production and Design, Vol. 32, No. 1, February 2016, pp. 1 20 httpdx.doi.org/10.5957/JSPD.32.1.130025-5...

... and an interruption in the welding process for low carbon and high notch toughness steel plate typically used in shipbuilding. The goal of the FE model was to successfully predict the effect of various time delays in the welding interruption on the residual stress distributions. The FE results are compared...

...DongSheng Zhao; Yulung Liu; XianDong Wang; ZhouShang Ji The finite element method is applied to calculate the welding residual stress for Invar steel of a liquefied natural gas (LNG) carrier's containment system, whereas the x-ray diffraction method is applied to measure the longitudinal welding...

... Heating Process deformation residual stress Journal of Ship Production and Design, Vol. 30, No. 3, August 2014, pp. 142 151 httpdx.doi.org/10.5957/JSPD.30.3.130068 Study on Plate Forming Using the Line Heating Process of Multiple-torch Bo Zhou,* Xiaoshuang Han,* Soon-Keat Tan,* and Zhong-chi Liu...

.... 2010. The Society of Naval Architects and Marine Engineers tack gravitational force ship production residual stress seam welding tack welding fabrication procedure fabrication procedure tack welding angular distortion assembly distortion bottom tack tack weld position Welding out...

... for prediction of welding distortions of a stiffened plate panel. 1 11 2009 1 11 2009 2009. The Society of Naval Architects and Marine Engineers welding distortion distortion pattern Welding Journal residual stress prediction november 2009 welding process stiffened plate panel...

...Zhou Bo; Liu Yujun; Ji Zhuoshang Oxygen cutting is a reliable and efficient process in shipbuilding. This study applies thermal elastoplastic analysis, using finite element techniques, to analyze the thermomechanical behavior and evaluate the residual stresses in oxygen cutting. A model...