Open AccessReconstructing Internal Temperature Distributions from Ultrasonic Time-of-Flight Tomography and Dimensional Resonance Measurements
Author(s) -
Stephen J. Norton,
L. R. Testardi,
H.N.G. Wadley
Publication year - 1984
Publication title -
journal of research of the national bureau of standards
Language(s) - English
Resource type - Journals
eISSN - 2376-5259
pISSN - 0160-1741
DOI - 10.6028/jres.089.007
Subject(s) - time of flight , ultrasonic sensor , tomography , materials science , resonance (particle physics) , nuclear magnetic resonance , physics , acoustics , optics , atomic physics
Two ultrasonic techniques for reconstructing the internal temperature distribution in metal bodies-time-of-flight tomography and dimensional resonance profiling-are described. An analysis of the tomographic reconstruction of temperature (including ray refraction effects) in a cylindrical body is presented together with initial experimental results. Dimensional resonance profiling is a new technique that allows the reconstruction of a one-dimensional distribution of temperature in a structure from measurements of its resonant frequencies. While time-of-flight tomography is well suited for measuring temperature in a cylindrical geometry, a combination of dimensional resonance and (a restricted form of) tomography is the best method for measuring temperature profiles in the more practically important rectangular slab geometry.