SIMULTANEOUS ESTIMATION OF ELECTRICAL AND THERMAL PROPERTIES OF MATERIAL FROM THE TONE-BURST EDDY CURRENT THERMOGRAPHY (TBET) TIME-TEMPERATURE DATA

Journal Article · Mon Feb 22 00:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3362465· OSTI ID:21371042

Biju, N; Ganesan, N; Krishnamurthy, C V; Balasubramaniam, Krishnan ^[1]

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1. Centre for Nondestructive Evaluation, Department of Mechanical Engineering, Indian Institute of Technology Madras (India)

In this paper, an inversion method is proposed to determine simultaneously the electrical and thermal properties of a given isotropic material from the time-temperature data obtained from the Tone-Burst Eddy current Thermography (TBET). A multi-physics forward model for computing the surface temperature data was used in a Genetic Algorithm (GA) based inversion technique to determine the material properties such as electrical conductivity (sigma), thermal conductivity (k), density (rho), and specific heat (C{sub p}) simultaneously. Different trials were carried out initially with simulated temperature data (with and without noise). A typical case of inversion of anisotropic material properties using a 2D finite element model is also discussed.

• OSTI ID: 21371042
• Journal Information: AIP Conference Proceedings, Vol. 1211, Issue 1; Conference: Review of progress in quantitative nondestructive evaluation, Kingston, RI (United States), 26-31 Jul 2009; Other Information: DOI: 10.1063/1.3362465; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALGORITHMS
ANISOTROPY
CARBON FIBERS
COMPUTERIZED SIMULATION
DENSITY
EDDY CURRENTS
ELECTRIC CONDUCTIVITY
FINITE ELEMENT METHOD
REINFORCED PLASTICS
SPECIFIC HEAT
SURFACES
TEMPERATURE DEPENDENCE
THERMAL CONDUCTIVITY
THERMOGRAPHY
CALCULATION METHODS
CURRENTS
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
FIBERS
MATERIALS
MATHEMATICAL LOGIC
MATHEMATICAL SOLUTIONS
MEASURING METHODS
NUMERICAL SOLUTION
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PLASTICS
POLYMERS
REINFORCED MATERIALS
SIMULATION
SYNTHETIC MATERIALS
THERMODYNAMIC PROPERTIES