Validation of Induction Heating Model for Alloy 718 Components

Abstract

The possibility to use induction heating for local heat treatment of aerospace components is evaluated in an on-going project. This paper describes validation measurements and simulations of induction heating of an axisymmetric rod made of alloy 718. The model was found to agree well with experimental data. Furthermore, an approach combining finite element code with a control algorithm for the current has been implemented and is described. This algorithm makes it possible to determine the variation of current needed to create a given temperature history.

Keywords:

• Current control
• Validation case
• Finite element method

Acknowledgments

Financial support was provided by the National Aviation Research Programme (NFFP), Luleå University of Technology, and Volvo Aero Corporation. I also would like to thank Prof. Lars-Erik Lindgren for his advice and University West for help with the measurements.