Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Whittington, Wil
Committee Member
El Kadiri, Haitham
Committee Member
Rhee, Hongjoo
Date of Degree
5-13-2022
Document Type
Graduate Thesis - Open Access
Major
Mechanical Engineering
Degree Name
Master of Science (M.S.)
College
James Worth Bagley College of Engineering
Department
Department of Mechanical Engineering
Abstract
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.
Recommended Citation
Lamdini, Barae, "Challenges and signal processing of high strain rate mechanical testing" (2022). Theses and Dissertations. 5514.
https://scholarsjunction.msstate.edu/td/5514
Included in
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