Proposal to Build a Laboratory Blast Overpressure Test Simulator; Subtitle: The Development of a Water Jet Impactor.

摘要

In order to establish a damage risk criteria (DRC) on pulmonary and gastrointestinal injury for the operating crew who fire heavy artillery, direct information that links the critical blast overpressure parameters and the degree of injury is necessary. Although field tests can be performed to provide the data, they are not amenable to speedy post-mortem analyses and sophisticated instrumentation. A laboratory test facility that is capable of generating the equivalent blast overpressure signal would serve the purpose and greatly facilitate the test procedure. It would also help to provide an environment for systematic and controlled experiments to quantify the relationship between blast and injury. However, for various reasons, most conventional approaches in generating the blast overpressure or its equivalent were not suitable for a laboratory setting. The idea of using a jet impactor to generate the impact signal was conceived. This report summarized the process of the development of such an apparatus. The first part focuses on the proof of the principle and identification of key elements and parameters. The second part is mainly devoted to the design and development of the prototype system.