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Erschienen in:
2017 | OriginalPaper | Buchkapitel
24. Instrumented Projectiles for Dynamic Testing
verfasst von : Guojing Li, Dahsin Liu, Dan Schleh
Erschienen in: Dynamic Behavior of Materials, Volume 1
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Abstract
Drop weight impact testers (DWIT) are commonly used in experiments for characterizing material properties and structural performance. With large mass, DWIT can provide large impact energy. However, the impact velocity involved in DWIT is usually low due to the fact that the impact velocity is proportional to the square-root of dropping height, i.e. v = (2gh)1/2. Even if the impact velocity can be increased, the wave propagation involved in impact may become entangled, resulting in distorted wave for dynamic analysis. This study investigates a mechanical technique to reduce the effect due to wave propagation and its application to dynamic impact measurements.