Investigators at Imperial College London, Department of Mechanical Engineering Zero in on Electrical Engineering

摘要

2011 FEB 23 - (VerticalNews.com) -- Current study results from the report, 'Hightemperaturern(>500°c) wall thickness monitoring using dry-coupled ultrasonic waveguiderntransducers,' have been published. "Conventional ultrasonic transducers cannot withstand highrntemperatures for two main reasons: the piezoelectric elements within them depolarize, andrndifferential thermal expansion of the different materials within a transducer causes them to fail.rnIn this paper, the design of a high-temperature ultrasonic thickness gauge that bypasses thesernproblems is described," investigators in London, the United Kingdom report.