June 14, 2015
June 14, 2015
June 17, 2015
26.474.1 - 26.474.24
Designing a Data Acquisition System for a Split Hopkinson Pressure BarSenior students are always challenged to apply their engineering knowledge and research skillsgained from an engineering curriculum toward design and implementation of challenging seniordesign projects. Split Hopkinson pressure bar is an apparatus that is used to study materialsbehavior under high speed deformation, where strain rate is very high. Hopkinson bars areusually custom made based on the needs of customers, who are mostly researchers in universitiesor research labs. In this work, in a form of senior design project, the authors provided learningopportunities for engineering students to design a data acquisition system for a small size splitHopkinson pressure bar previously designed by former students. The objectives of this projectare to engage a team of students: 1) to design a data acquisition system using NationalInstrument hardware and Labview to collect strain data during high speed deformation testing 2)to design a data processing program to process the strain data collected to stress-strain graph 3)to conduct a number of high speed deformation material testing to validate the performance ofthe data acquisition system designed.Students implemented the fundamentals of graphical programming, computational methods andsolid mechanics to design the data acquisition system for a split Hopkinson pressure bar. Aworking prototype of the data acquisition system was integrated and tested. Preliminary testsdemonstrate that the performance of the system is as desired. In this paper, the authors elaborateon how the students have utilized the engineering knowledge acquired throughout the course todesign and develop the data acquisition system for the Hopkinson pressure bar and thus theeducational gains achieved.
Kirby, S. P., & Ejenavi, J. O., & Matin, P. (2015, June), Designing a Data Acquisition System for a Split Hopkinson Pressure Bar Paper presented at 2015 ASEE Annual Conference & Exposition, Seattle, Washington. 10.18260/p.23812
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