C
C. Ramadas
Researcher at Defence Research and Development Organisation
Publications - 27
Citations - 579
C. Ramadas is an academic researcher from Defence Research and Development Organisation. The author has contributed to research in topics: Lamb waves & Delamination. The author has an hindex of 10, co-authored 27 publications receiving 484 citations. Previous affiliations of C. Ramadas include Indian Institute of Technology Madras.
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Interaction of the primary anti-symmetric Lamb mode (Ao) with symmetric delaminations: numerical and experimental studies
TL;DR: In this paper, the interaction of an ultrasonic guided Lamb wave mode with delamination type defects in a quasi-isotropic laminated composite plate has been studied, using both simulations and experiments.
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Interaction of guided Lamb waves with an asymmetrically located delamination in a laminated composite plate
TL;DR: In this article, the primary anti-symmetric Lamb mode (Ao) was studied through both numerical simulations and experiments employing the air coupled ultrasonic technique, and the presence of the "mode converted turning modes" was also validated through the experiments in this study.
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Modelling of attenuation of Lamb waves using Rayleigh damping: Numerical and experimental studies
TL;DR: In this paper, the authors derived the Lamb mode attenuation constants in terms of the attenuation coefficient, group velocity and central frequency of excitation of Lamb mode, using the Rayleigh damping model.
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Delamination Size Detection using Time of Flight of Anti-symmetric (Ao) and Mode Converted Ao mode of Guided Lamb Waves:
TL;DR: In this article, an attempt has been made to quantitatively assess the extent of delamination in composite laminates, using time-of-flight of fundamental Lamb wave modes, without recourse to baselin.
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Interaction of Lamb mode (Ao) with structural discontinuity and generation of “Turning modes” in a T-joint
TL;DR: In the present work, the interaction of the fundamental anti-symmetric guided Lamb mode (A(o)) with a structural discontinuity in a composite structure was studied through Finite Element numerical simulations and experiments.