The Effects of Blast Trauma (Impulse Noise) on Hearing: A Parametric Study Source II
Abstract
There are three broad goals to this contract. The first and primary goal is to study the effects of high level blast wave exposure on the conductive and sensory structures of the mammalian ear. This includes the use of the auditory evoked potential to measure hearing thresholds and tuning curves prior to and after exposure to various blast wave exposures. Parameters of the blast waves studied include intensity, spectral composition, number of impulses and repetition rate. Correlations among hearing measures, exposure variables and histology have been developed. To achieve the above, the following two objectives must be completed: 1) develop a series of blast wave generation devices which are suitable for the laboratory simulation of a wide spectrum of blast waves; and develop a suitable set of software and a PC-based computer system which will interact with crystal and capacitive microphones to capture and analyze blast waves. Four sources have been developed along with the specified analysis system. The results from the Source I (a conventional shock tube) were summarized in reports ADA 206-180 and ADA 203-854. This report summaries the results from Source II, a 5-inch Lamont valve-driven shock tube.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1989
- Accession Number
- ADA221731
Entities
People
- George A. Turrentine
- Keng D. Hsueh
- Robert I. Davis
- Roger P. Hamernik
- William A. Ahroon
Organizations
- State University of New York at Plattsburgh