P
Prabhu Rajagopal
Researcher at Indian Institute of Technology Madras
Publications - 151
Citations - 1599
Prabhu Rajagopal is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Ultrasonic sensor & Guided wave testing. The author has an hindex of 18, co-authored 129 publications receiving 1035 citations. Previous affiliations of Prabhu Rajagopal include Imperial College London & Indian Institutes of Technology.
Papers
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On the use of absorbing layers to simulate the propagation of elastic waves in unbounded isotropic media using commercially available Finite Element packages
TL;DR: In this article, the authors address methods to dramatically enhance computational efficiency by only meshing a local region of the material surrounding the defect; this reduction requires some kind of boundary, or boundary condition, which absorbs, rather than reflects, any waves arriving at the exterior of the modeled domain.
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Outlier analysis for defect detection using sparse sampling in guided wave structural health monitoring
Jagadeeshwar L. Tabjula,Srijith Kanakambaran,Sheetal Kalyani,Prabhu Rajagopal,Balaji Srinivasan +4 more
TL;DR: The feasibility of detection of delamination is experimentally demonstrated, whose size is comparable to the ultrasonic wavelength with probability of detection better than 90% using <1% of the total number of samples required for conventional imaging, even under conditions wherein the SNR is as low as 5 dB.
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Scattering of the fundamental shear horizontal guided wave by a part-thickness crack in an isotropic plate.
TL;DR: The interaction of the fundamental shear horizontal (SH0) guided mode with part-thickness cracks in an isotropic plate is studied as an extension within the context and general framework of previous work and theoretical analysis is used to understand the physical basis for such behavior.
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Statistics-based baseline-free approach for rapid inspection of delamination in composite structures using ultrasonic guided waves
TL;DR: In this article , a baseline-free statistical approach for the identification and localization of delamination using sparse sampling and density-based spatial clustering of applications with noise (DBSCAN) technique is proposed.
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Laser ultrasonic inspection of additive manufactured components
Geo Davis,Geo Davis,Romesh Nagarajah,Suresh Palanisamy,R.A. Rahman Rashid,Prabhu Rajagopal,Krishnan Balasubramaniam +6 more
TL;DR: The results demonstrate laser ultrasonic testing (LUT) as a promising method for the non-contact inspection of additive manufactured components and the results were validated using X-ray computed tomography and ultrasonic immersion testing.