科研之友
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摘要
This paper presents results from optical and analytical measurements of stress wave propagation in a rod of PMMA. The rod is loaded between the incident and transmitter bars of a split Hopkinson pressure bar. Displacements in the rod are measured using high speed photography with digital image correlation. Independent calculations of strain and displacement in the rod are made from the waves measured at the Hopkinson bar gauge stations, from which all required material parameters (apart from density) can be calculated by applying standard wave propagation theory. The paper finishes with a discussion of how these measurements will be developed in the future.
- 出版日期2009-6
