Accession Number:

ADA190813

Title:

Characterization and Modeling of Thoraco-Abdominal Response to Blast Waves. Volume 8. Effect of Clothing on Thoracic Response

Descriptive Note:

Annual rept. (Final) 15 Feb 82-31 May 85

Corporate Author:

JAYCOR SAN DIEGO CA

Report Date:

1985-05-01

Pagination or Media Count:

81.0

Abstract:

Blast waves are known to cause injuries to internal organs, e.g., lung, gastrointestinal tract, ear, and larynx. To explore the possibility of using body covering as a means of protection, Clemedson and Jonsson 1 covered rabbits with rigid and soft material and exposed the animals to blast waves in shock tube and free field explosion experiments. They found that the rigid material protected the animal from lung injury. The soft coverings, however, were found to produce increased loading and aggravate the lung injury. Both peak pressure and rate of pressure rise in the thorax were found to be considerably higher in their experiments. Nevertheless the underlying mechanism causing such phenomena was not explained. From these results it appears that material coverings can increase the blast loading at the body surface, which, in turn, can cause increased ITP and higher risk of blast injury. Since ITP has been correlated with the severity of blast injury, understanding of the effect of vest material on blast wave transmission, reflection, and absorption is an important step toward the design of a protecting device. Keywords Weapons effects Mathematical models Anatomical models Occupational diseases Exposure physiology, Protective clothing.

Subject Categories:

  • Weapons Effects (Biological)
  • Protective Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE