NOISE REDUCTION PROGRAM FOR U.S. ARMY CONSTRUCTION EQUIPMENT

The initial program was to analyze the source of noise, reduce noise at the source, and provide overall noise reduction treatment to reach lowest practical levels. Similar efforts were then accomplished on several special military vehicles to provide noise reduction retrofit kits. The initial work revealed special needs in the area of hydraulic system noise, and acoustical materials and in-depth studies were initiated to analyze techniques of hydraulic noise measurement and to evaluate material suitability for military use.