Differences in postinjury auditory system pathophysiology after mild blast and nonblast acute acoustic trauma

Blasts exposures often produce hearing difficulties. Although cochlear damage typically occurs, the downstream effects on central auditory processing are less clear. Moreover, outcomes were compared between individuals exposed to the blast pressure wave vs. those who experienced the blast noise without the pressure wave. It was found that a single blast exposure produced changes at all stages of the ascending auditory path at least 4 wk postblast, whereas blast noise alone produced largely transient changes.

Numerical and Experimental Analysis of Multilayer Mine Protection

An interaction of the blast pressure wave after detonation of a blast mine under the multilayer mine protection mounted on a military vehicle is described in this project. The main focus was applied to absorbing capability of the multilayer sandwich. Results from numerical simulations were compared with experimental tests. The test procedure is provided according to STANAG 4569/AEP-55 standard with threat level 3B. The main goal of this project was to develop a multilayer armor that is able to protect a typical military vehicle against the 8 kg TNT blast mine.

Single Degree of Freedom Analysis of Steel Beams under Blast Loading

The paper deals with the analysis of steel beams subjected to blast load approximated as a one degree system of freedom (SDOF). It requires knowing the parameters of blast pressure wave, its effect on structure and the tools for the solution of dynamic analysis. The blast wave is estimated with linear decay and exponential decay using positive and negative phase. The results of SDOF model are compared with the corresponding experimental accelerations and strain time-histories. There is a described dynamic analysis for such structure.