There are countless techniques which revolve around the manipulation of pressure waves, to test the stability and integrity of structures, be it aircraft hulls or even the buildings and skyscrapers that you see around, making the study of acoustics an essential part of any engineering design. Even the study of instruments like the Violin have revealed essential insights into the field of acoustics and that research into Indian instruments would reveal a lot more. The problems engineers face in the real world, go well beyond the approximations and assumptions one often sees in textbooks. They deal with the nonlinear regime, far away from the comforts of equilibrium conditions, where even problems like modelling the wrinkle on a membrane might be impossible to model! To find just the right balance between simplicity and feasibility is what makes an engineer truly skilled. In our conversation with Dr. Praveen Krishna, a research pioneer from the field of applied dynamics and vibrations, blew our minds with examples from everyday life that could actually help solve some of the pressing problems that the industry faces. A passionate teacher who stresses on the importance of practical knowledge and hands on experience above all and an expert engineer, who brings an arsenal of practical knowledge that he built up during his ten year tenure in the industry, working with giants like Honeywell and GE, his work spans a wide spectrum of fundamental engineering problems dealing with structural and vibration dynamics.

# When I look at a Mridangam from the vibrational perspective, it poses a lot of questions. Questions which I may be able to use in damping control in thin membranes. Therefore, I can use the same idea!

### ABOUT THE GUEST

Dr. Praveen Krishna Associate Professor, Department of Aerospace, Indian Institute of Space Science and Technology, Thiruvananthapuram

Dr. Praveen Krishna is currently an Associate professor at the Indian Institute of Space Science and Technology, Thiruvananthapuram. A research pioneer from the field of applied dynamics and vibrations, he has carried out extensive work in the multifariously distinct area of nonlinear systems. He pursued his bachelors from the Kerala University and went on to take up his masters as well as doctoral work at the Indian Institute of Technology, Madras. His research includes myriads of problems dealing with non-linear systems and their dynamics. His work extends from the fascinating field of acoustic engineering to the very fundamental problems dealing with structural and vibration dynamics. With almost ten years of industrial experience, Dr. Krishna brings in an arsenal of practical knowledge to his teaching. In his personal time, as a violinist, Dr. Krishna has a deep passion for music and amusingly, is also pursuing research on the acoustics of Indian classical instruments. A warm sense of humour, genuine friendliness and immense passion for teaching are a few traits of his dynamic personality.

### Transcript

**Shreya Mishra (Host 1) :**

**Shreya :**

**Dr. Praveen Krishna :**

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**Dr. Krishna :**

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**Sushanth Suresh Shanbag(Host 2) :**

**Dr. Krishna :**

**Sushanth :**

**Dr. Krishna :**

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**Shreya :**

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**Sushanth :**

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**Shreya :**