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Inverse Thermal Analysis of Titanium GTA Welds Using Multiple Constraints

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Abstract

Inverse thermal analysis of titanium gas-tungsten-arc welds using multiple constraint conditions is presented. This analysis employs a methodology that is in terms of numerical-analytical basis functions for inverse thermal analysis of steady-state energy deposition in plate structures. The results of this type of analysis provide parametric representations of weld temperature histories that can be adopted as input data to various types of computational procedures, such as those for prediction of solid-state phase transformations. In addition, these temperature histories can be used to construct parametric function representations for inverse thermal analysis of welds corresponding to other process parameters or welding processes whose process conditions are within similar regimes. The present study applies an inverse thermal analysis procedure that provides for the inclusion of constraint conditions associated with both solidification and phase transformation boundaries.

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Acknowledgment

This work was supported by a Naval Research Laboratory (NRL) internal core program.

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Authors and Affiliations

  1. Center for Computational Materials, Code 6390, Materials Science and Technology Division, Naval Research Laboratory, Washington, DC, USA

    S. G. Lambrakos & L. Huang

  2. George Mason University, Fairfax, VA, USA

    A. Shabaev

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  1. S. G. Lambrakos
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  2. A. Shabaev
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  3. L. Huang
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Correspondence to S. G. Lambrakos.

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Lambrakos, S.G., Shabaev, A. & Huang, L. Inverse Thermal Analysis of Titanium GTA Welds Using Multiple Constraints. J. of Materi Eng and Perform 24, 2401–2411 (2015). https://doi.org/10.1007/s11665-015-1511-4

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  • DOI: https://doi.org/10.1007/s11665-015-1511-4

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