K
Krishnan Balasubramaniam
Researcher at Indian Institute of Technology Madras
Publications - 493
Citations - 7351
Krishnan Balasubramaniam is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Ultrasonic sensor & Lamb waves. The author has an hindex of 40, co-authored 486 publications receiving 6266 citations. Previous affiliations of Krishnan Balasubramaniam include University of Colorado Boulder & Marshall Space Flight Center.
Papers
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Proceedings ArticleDOI
Experimental issues in the measurement of nonlinearity parameter from static displacement (dc component) generation experiments
TL;DR: In this paper, the abnormal behavior of the nonlinearity parameter evaluated from static displacement generation-based finite amplitude ultrasonic wave propagation experiments at low input amplitudes is considered and the cause of the abnormal variation is found to be due to the resolution of the digitizer.
Journal ArticleDOI
Characterizing Halbach EMAT Configurations for SH0 Ultrasonic Waves
TL;DR: In this paper, the authors explored the Halbach magnet array pattern as an alternate to the conventional periodic permanent magnet (PPM) structure, and compared the amplitude generated from multiple single-row Halbach EMATs with singlerow PPM EMAT configurations using finite-element-based simulation models for SH0 ultrasonic wave generation.
Proceedings ArticleDOI
In-line Laser Thermography for Crack Detection: A Numerical Approach
P. V. Nithin,Sreedhar Unnikrishnakurup,C. V. Krishnamurthy,Mathias Zeigler,Philippe Myrach,Krishnan Balasubramaniam +5 more
TL;DR: In this paper, a local laser spot excitation for surface crack detection is simulated using the finite element method (FEM) and the FEM model simulates the heat diffusion phenomena and the effect of the presence of known surface crack on a NiCr coated brass sample.
Proceedings ArticleDOI
Wireless Nde Sensor System for Continuous Monitoring
Gerges Dib,Lassaad Mhamdi,Tariq Khan,Lalita Udpa,Nizar Lajnef,Jung-Wuk Hong,Satish S. Udpa,Pradeep Ramuhalli,Krishnan Balasubramaniam +8 more
TL;DR: This paper presents a wireless system for continuous monitoring, identification of anomalous events, NDE data acquisition and data transfer that is integrated with a wireless radio unit such as a MICA mote.
Proceedings ArticleDOI
Interaction of guided lamb waves with delaminations and discontinuities in composite plate‐like structures
TL;DR: In this paper, the length and width of interface delamination in composite T-joint have been worked out using Dscan and B-scan, respectively, through numerical simulations and experimental verifications through Non Contact Ultrasound (NCU) technique.