Ability of Ballistic Eyewear to Maintain Protection with Primary Blast Shock Waves
Abstract
A helmet-wearing headform embedded with pressure sensors at the left (OS) and right (OD) corneal planes was exposed to blast pressures of 10, 20, 30, and 40 psi at orientations of 0, 45, 90, 135, and 180 degrees with respect to head rotation. Statistical comparisons were made among 3 groups: a baseline control with no protective eyewear (N=16), ballistic goggles (N=17), and ballistic spectacles (N=18). Adverse events were defined as eyewear breakage or displacement, helmet displacement, or chinstrap failure. A total of 51 records were obtained during 53 blast tests. The paired t-test and Pearson's Chi-Squared test were applied at a p<0.05 significance threshold. For the 0 degree orientation, both goggles (OD:p=0.031; OS:p=0.034) and spectacles (OD:p=0.044; OS:p=0.047) significantly reduced the peak corneal pressure compared to no protection, with goggles being more effective (p=0.004).
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 29, 2020
- Accession Number
- AD1110959
Entities
People
- John S. Martin
- Michael K. Smolek
- Thomas H. Harding
Organizations
- Applied Research Associates (United States)
- United States Army Aeromedical Research Lab