Abstract
As the use of fiber composites extends to automotive applications, there is a need to characterize the composite properties at low strain rates, such as below 100/s. In performing such low strain rate tests, the commonly used split Hopkinson’s pressure bar for high strain rate investigations should become inadequate. A high-speed hydraulic testing machine may be suitable for testing at the low strain rates; however, it is not necessarily available to the general engineers because of its high cost. On the basis of a drop weight impact tester, this study presents an affordable testing technique for characterizing a carbon composite at low strain rates. Both compressive and tensile tests are demonstrated in this study.
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References
Chen, W., and Song, B., Split Hopkinson (Kolsky) Bar, Design, Testing and Applications, Springer, New York, New York (2011).
Li, G., Construction, Calibration and Application of a Split Hopkinson’s Pressure Bar, M.S. Thesis, Michigan State University (2002).
http://www.instron.us/wa/product/VHS-8800-High-Strain-Rate-Systems.aspx? [accessed on 13 September 2012].
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Li, G., Liu, D. Low strain rate testing based on drop weight impact tester. Exp Tech 39, 30–35 (2015). https://doi.org/10.1111/j.1747-1567.2012.00862.x
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DOI: https://doi.org/10.1111/j.1747-1567.2012.00862.x