Development of a helmet liner for protection against blast induced trauma

[摘要] (cont.)This research effort employed both shock tube experiments and numerical studies in order to investigate the effectiveness of the proposed helmet liner design. Quantitative results have shown that the use of high density filler materials result in higher attenuation levels than low density materials while comparing to solid foam control samples. The peak transmitted overpressure and pressure gradient were significantly reduced with the use of high density materials while the duration of the positive phase was increased. This response resulted in lower overall impulse values of the transmitted wave. The use of high density filler materials also results in superior frequency distribution.

[发布机构] Massachusetts Institute of Technology