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**Harvard**

Lindström, P. (2009) *Heat Transfer Prediction of In-Service Welding in a Forced Flow of Fluid*.

** BibTeX **

@article{

Lindström2009,

author={Lindström, Per},

title={Heat Transfer Prediction of In-Service Welding in a Forced Flow of Fluid},

journal={Journal of Offshore Mechanics and Arctic Engineering},

issn={0892-7219},

volume={131},

issue={3},

abstract={An algorithm for heat transfer prediction of in-service welding operations in a forced flow of fluid is presented. The algorithm presented is derived from Rosenthal's 3D heat flow equation and boundary layer approximations. This was possible by the introduction of an apparent thermal conductivity k(PL), which is a function of the boundary layer's heat transfer coefficient alpha(f) and the base material's thickness delta. This implies that a weld cooling time Delta tT(1)/T-2 in a forced flow of fluid can now be calculated by an ordinary engineering calculator and thus enabling suitable welding parameters to be determined. The magnitude of k(PL)(alpha(f),delta) was established by regression analysis of results from a parametric finite element analysis series of a total number of 112 numerical simulations. Furthermore, the result of the regression analysis was validated and verified by a welding experiment series accomplished on an in-house designed and constructed in-service welding rig. The principle design of the welding rig as well as its instrumentation, a PC based Data Acquisition system, is described. In addition, a method to measure the weld metals cooling time Delta tT(1)/T-2 by means of thermocouple elements is described. Finally, the algorithm presented in this study proved feasible for industrial in-service welding operations of fine-grained Carbon and Carbon-Manganese steels with a maximum Carbon Equivalent (IIW) (CE) of 0.32.},

year={2009},

keywords={flow, heat transfer, numerical analysis, regression analysis, welding, welds},

}

** RefWorks **

RT Journal Article

SR Electronic

ID 137547

A1 Lindström, Per

T1 Heat Transfer Prediction of In-Service Welding in a Forced Flow of Fluid

YR 2009

JF Journal of Offshore Mechanics and Arctic Engineering

SN 0892-7219

VO 131

IS 3

AB An algorithm for heat transfer prediction of in-service welding operations in a forced flow of fluid is presented. The algorithm presented is derived from Rosenthal's 3D heat flow equation and boundary layer approximations. This was possible by the introduction of an apparent thermal conductivity k(PL), which is a function of the boundary layer's heat transfer coefficient alpha(f) and the base material's thickness delta. This implies that a weld cooling time Delta tT(1)/T-2 in a forced flow of fluid can now be calculated by an ordinary engineering calculator and thus enabling suitable welding parameters to be determined. The magnitude of k(PL)(alpha(f),delta) was established by regression analysis of results from a parametric finite element analysis series of a total number of 112 numerical simulations. Furthermore, the result of the regression analysis was validated and verified by a welding experiment series accomplished on an in-house designed and constructed in-service welding rig. The principle design of the welding rig as well as its instrumentation, a PC based Data Acquisition system, is described. In addition, a method to measure the weld metals cooling time Delta tT(1)/T-2 by means of thermocouple elements is described. Finally, the algorithm presented in this study proved feasible for industrial in-service welding operations of fine-grained Carbon and Carbon-Manganese steels with a maximum Carbon Equivalent (IIW) (CE) of 0.32.

LA eng

DO 10.1115/1.3124126

LK http://dx.doi.org/10.1115/1.3124126

OL 30