Faculty Publications
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Publications by NITK Faculty
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Item Low-cost dynamometers - A grip measurement and logging solution(IEEE Computer Society, 2013) Hasandka, A.; Ghosh, A.; Shetty, P.K.; Ramesh Kini, R.M.The aim of the project is to develop a grip measurement and data logging product which can be used as an exercise ball for patients who have undergone orthopedic surgery and as a recovery quantification tool for the doctor treating patients with the same condition. It provides the doctor with a measure of how effective the surgery has been and how well the patient has been recovering. and allows the doctor to quantify certain each force. The device logs the pressure applied on the ball for a period of time as a part of the recovering exercise and also has an attachment to measure the grip pressure between adjacent fingers and the thumb and other fingertips. The doctor has an interface on the other side on a computer that shows the logged data and allows the device to be put in various different modes to measure the different forces. It stores the parameters after every examination. © 2013 IEEE.Item Thermal studies of a MEMS-based pressure sensor for aerospace applications(John Wiley and Sons Inc, 2025) Krishna, B.G.; Murthy, K.R.; Khan, K.Z.; Madav, V.; Ashok Babu, T.P.The main objective of this study is to enhance heat transfer for the reduction of temperature in MEMS-based piezoresistive high-temperature pressure sensors. The main parameter that affects the sensor performance especially for Aerospace applications is higher operating temperature because there are many electronic components and devices that may fail due to higher temperatures. Prevention of overheating of the electronic components in the sensor is a challenge; hence, the study of heat transfer from hydraulic fluid is of utmost importance. Different types of fin surfaces to enhance the heat transfer rate are studied using ANSYS CFD (computational fluid dynamics). CFD simulations and experiments are carried out to design novel high operating temperature pressure sensors for aerospace applications. This in turn improves performance due to internal thermo-piezoresistive amplification. In this paper, high-temperature pressure sensors are designed by CFD analyses and experimentally analyzed for a better understanding of the distribution of temperature in the pressure sensor and thermal variation in the sensor and observe the changes during analysis. Extended fin surface concepts are introduced for better heat transfer and to reduce the fluid temperature inside the sensor that is transferred to the electronic components. ANSYS CFD analysis is carried out to determine the temperature distribution and two models are identified for experimental validation. © 2024 Wiley Periodicals LLC.