Experimental Investigation of Blast Mitigation for Target Protection
An explosion yielding a blast wave can cause catastrophic damage to a building and its personnel. This threat defines an immediate importance for understanding blast mitigation techniques via readily available materials. An unconfined mass of water in the form of a free flowing sheet is one possible readily available mitigant. This chapter focuses narrowly on the protection of high-valued structures and other large targets where removal from the threat zone is often impossible. In these situations, methods are needed to dissipate and reflect incoming blast waves and mitigate damage potential. Any proposed mitigation method must be evaluated for effectiveness, and while steady advances in computational physics have been made in this area, experimentation remains crucial. Therefore, this chapter emphasizes experimental methods for evaluation of blast mitigation, both from a practical and fundamental standpoint. In addition, some of the capabilities of current computational methods are highlighted. The chapter begins with a review of the underlying physics. This is followed by a brief overview of experimental methods. Finally, the remainder of the chapter is dedicated to recent experimental and computational results for a potential configuration involving protective water sheets.
KeywordsCombustion Entropy Attenuation Foam Explosive
We would like to thank the Department of Homeland Security and the Center of Excellence for Explosive Detection, Mitigation and Response, Sponsor Award No. 080409/0002251. Additionally, special thanks to Matthew Massaro and Jesus Mares who assisted with experiments.
Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the US Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.
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