A
A. Demma
Researcher at Imperial College London
Publications - 7
Citations - 724
A. Demma is an academic researcher from Imperial College London. The author has contributed to research in topics: Reflection (physics) & Guided wave testing. The author has an hindex of 6, co-authored 7 publications receiving 661 citations.
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The reflection of the fundamental torsional mode from cracks and notches in pipes
TL;DR: A quantitative study of the reflection of the T(0,1) mode from defects in pipes in the frequency range 10-300 kHz has been carried out, finite element predictions being validated by experiments on selected cases.
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The reflection of guided waves from notches in pipes: a guide for interpreting corrosion measurements
TL;DR: In this article, the effect of pipe size, defect size, guided wave mode and frequency on the reflection from notches was analyzed for a 3-in. schedule 40 steel pipe.
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Scattering of the fundamental shear horizontal mode from steps and notches in plates
TL;DR: It is demonstrated that it is possible to use this method to obtain the reflection from a notch of any depth and at any frequency, and the limits of this method in approximating cracklike defects have been studied.
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The Effect of Bends on the Propagation of Guided Waves in Pipes
TL;DR: In this article, the dispersion curves for toroidal structures have been calculated using a finite element method, as there is no available analytical solution, and the factors affecting the transmission and reflection behavior have been identified by studying a straight-curved-straight structure both numerically and experimentally.