Browsing by Author "Kaup, P.S."

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Cross Platform Web Accessible Remote Experiment Architecture using NI PXI, LabVIEW Web Server and Javascript Libraries
(Institute of Physics, 2025) Bidari, L.; Kaup, P.S.; Bidari, K.; Rai, S.K.; Gangadharan, G.
Remote Laboratories have become vital tools for education, research and industrial training, enabling experimentation beyond spatial and temporal constraints. The increasing need for flexible and accessible experimentation necessitates the development of robust remote laboratory architectures built using reliable proprietary hardware. This work presents such a remote laboratory architecture developed for two vibration experiments. The current work leverages a National Instruments PXI system alongside LabVIEW for experiment automation and web based control. The backend is built using the LabVIEW web server coupled with Google Javascript and AJAX libraries. This kind of design ensures platform-independent access via standard web browsers on laptops and mobile devices. Performance evaluation of the developed system demonstrated the system's efficiency and responsiveness. Upon receiving the user input via the browser based user interface, the experiment is triggered swiftly within 0.5 seconds. A ten-second graphical representation of acquired vibration data complete with precise acquisition timestamps is displayed on the client's browser, providing real-time feedback. This accelerated processing power is due to the integration of web server and controller in a single system. Â© Published under licence by IOP Publishing Ltd.
Design and experimental analysis of a non-magnetic cantilever beam in a remotely controlled free vibration setup using LabVIEW
(American Institute of Physics, 2025) Bidari, L.; Kamath, N.; Kaup, P.S.; Swamy, K.B.M.; Kalluvalappil, G.
Free vibration analysis finds a plethora of applications in real-world systems, ranging from deciding design factors to addressing maintenance concerns; hence, it forms a fundamental basis of material sciences and structural engineering. Cantilever structures are widespread across various physical systems, from domestic applications such as diving boards or parking shields to heavy-duty industrial applications such as airplane wings or windmill blades. In this paper, a non-magnetic cantilever beam is excited using a cam attached to a stepper motor. The trigger results in free vibrations of the cantilever beam and this data is collected by the accelerometer. The entire experiment is carried out distantly using LabVIEW remote panels, and frequency analysis and calculations are performed on the vibration data collected. The designed remote experimental setup provided near-accurate results for natural frequency calculation, and this is validated experimentally using an impact hammer and theoretically using physical parameters. The remote setup provides the freedom to model and simulate different physical conditions and systems as cantilever structures in the experimental environment. This results in an easy understanding of beam behavior in real-time systems. Â© 2025 Author(s).
Investigation of Field Dependent Variations of Torsional Stiffness of Magnetorheological Elastomer
(American Institute of Physics, 2024) Kaup, P.S.; Kumar, S.; Kamath, N.; Mayya, S.; Gangadharan, K.V.
Isolation of torsional vibrations in shafts is one of the most important aspects of a sound design system. Though existing systems such as the centrifugal pendulum absorber and the flywheels reduce the effects to a certain extent, the system fails to comply when the natural frequency of the torsional system changes. To counteract such instances, smart materials are used to tune their parameters based on the variations in the system variables. Magnetorheological Elastomers offer a viable solution to the dynamic vibrations as they can adhere to variations in system properties. To properly implement the MRE, it is mandatory to characterize the mechanical properties under dynamic loading conditions under varying magnetic fields. The present paper focuses on characterizing the torsional stiffness of the MRE under varying magnetic fields. The characterization methodology is discussed with the building of the measurement system, followed by the results and discussions of varying hysteresis loops for different magnetic fields. Variations in the properties are discussed, highlighting the role of the dipole mechanism. Â© 2024 American Institute of Physics Inc.. All rights reserved.