Impulse Assessment of the Enhanced Combat Helmet - Marine Corps with the ComTac V Headset, the Howard Leight (trademark) MAX (registered trademark) Earplug, and Crossbow (registered trademark) Eyewear
Abstract
This technical memorandum describes the IPIL testing conducted on a combined configuration that included the Gentex (registered trademark) Corporation Enhanced Combat Helmet Marine Corps, the ComTac (trademark) V Hearing Defender Headset, the Howard Leight (trademark) MAX earplug (registered trademark), and the Crossbow (registered trademark) eyewear. Testing included two test modes for the ComTac (trademark) V: passive and active. In all occluded conditions, the ECH-M, ComTac (trademark) V, Howard Leight (trademark) MAX (registered trademark), and Crossbow (registered trademark) were donned. Testing was completed in accordance with the ANSI standard S12.42-2010. All device samples were tested at the nominal levels of 160 and 170 decibel peak (dBP, re: 20 Pa). A total of five samples were fitted to an acoustic test fixture two times each for a total of 10 trials per test level in both the passive and active test modes. These results suggest that the ComTac trademark) V, when functioning properly and fitted in combination with the ECH-M, Howard Leight (trademark) MAX (registered trademark), and the Crossbow (registered trademark) can adequately protect against impulses below 180.0 dBP in both the passive and the active test modes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 2022
- Accession Number
- AD1165615
Entities
People
- Alexa H. Kolias
- Derek W. Schwaller
- Jeremy S. Federman
- Stephanie J. Karch
Organizations
- Naval Submarine Medical Research Laboratory