Open Access

ARTICLE

Fringe Projection Assisted Horizontal Impact Testing

D. Schleh¹, D. Liu¹

1 MSU, East Lansing, MI, U.S.A.

Structural Durability & Health Monitoring 2013, 9(3), 201-216. https://doi.org/10.32604/sdhm.2013.009.201

Abstract

Understanding the response of composite materials to dynamic loading is necessary for their safe and efficient application to many of the world’s engineering designs where stiffness-to-weight ratios are vitally important. In this study, fringe projection was used and evaluated as means to measure the out-of-plane displacement of composite materials from impact loading involving a projectile accelerated horizontally through the use of gas. The capability of providing out-ofplane deformation measurements can largely enrich the investigation of composite materials under horizontal impact which are commonly performed without any measurement other than projectile velocity. The out-of-plane displacement history was subsequently used in an attempt to evaluate the velocity, acceleration and force histories of the impacted composite materials. An impact based bending stiffness could also be obtained for calculating the composites’ resistance to impact loading. However, it should be noted that the duration and energy of the impact events to which fringe projection can be applied is not without limits.

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Citations