Mississippi State University
El Kadiri, Haitham
Date of Degree
Graduate Thesis - Open Access
Master of Science (M.S.)
James Worth Bagley College of Engineering
Department of Mechanical Engineering
Dynamic testing provides valuable insight into the behavior of materials undergoing fast deformation. During Split-Hopkinson Pressure Bar testing, stress waves are measured using strain gauges as voltage variations that are usually very small. Therefore, an amplifier is required to amplify the data and analyze it. One of the few available amplifiers designed for this purpose is provided by Vishay Micro-Measurements which limits the user’s options when it comes to research or industry. Among the challenges of implementing the Hopkinson technology in the industry are the size and cost of the amplifier. In this work, we propose a novel design of a signal conditioning amplifier that provides the following functionalities: voltage excitation for strain gauges, wide gain range (1-1000), signal balancing, shunting, and filtering. The main objective is to make a smaller and cheaper amplifier that provides equivalent or better performance allowing larger application of the Hopkinson technology in the industry.
Lamdini, Barae, "Challenges and signal processing of high strain rate mechanical testing" (2022). Theses and Dissertations. 5514.
Acoustics, Dynamics, and Controls Commons, Electrical and Electronics Commons, Electro-Mechanical Systems Commons, Mechanics of Materials Commons, Other Materials Science and Engineering Commons, Other Mechanical Engineering Commons, Signal Processing Commons