Materials Characterization Using Acoustic Nonlinearity Parameters and Harmonic Generation: Engineering Materials
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
Most of the NDE effort using ultrasonics to assess engineering materials has been in the detection of cracks or crack-related phenomena. Other questions involving, for example, NDE measurements of temper or the state of fatigue prior to cack initiation, while very important to material scientists and design engineers, are not easily investigated using ultrasonic techniques based on linear theory. Recent work indicates, however, that the use of ultrasonics based on nonlinear concepts provides potentially useful information about material processing and certain pathological states that develop in materials as they are used.