On the Radio-Frequency Inputs in Dipolar Heating of Adhesives
Abstract
We consider the form of the radio-frequency (RF) or dielectric input expression in the heat equation which arises in the modeling of the curing of epoxy adhesives in bonding of composites. We review two standard derivations of a commonly used expression for the RF heating source term. In this context we discuss difficulties involving the associated inherent polarization assumption and asymptotic behavior of dielectric parameters as a function of the frequency of the RF signal. These difficulties cast doubt on the validity of the standard RF expression. We the use two standard polarization models (Debye and Lorentz) to demonstrate how one can systematically derive general RF heating expressions which do not suffer the inconsistencies that arise in the standard RF expression.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 19, 1999
- Accession Number
- ADA445752
Entities
People
- H. Thomas Banks
- M. A. Goodhart
- M. L. Joyner
- S. R. Durso
Organizations
- North Carolina State University