Development of Scratch- and Spall-Resistant Windshields.
Abstract
Studies were performed to evaluate possible ways of improving the primary weaknesses in existing Army helicopter windshields, namely, scratching and spalling. Three experimental windshield material configurations offering a potential solution were fabricated for test and evaluation. The spall problem was approached by using polycarbonate as a backup material and was incorporated into each design. The scratch problem was approached by employing either (1) a hard surface coating, (2) an acrylic cladding, or (3) a thin glass cladding to the polycarbonate backup material. Commercially available materials and abrasion-resistant coatings were evaluated utilizing a windshield wiper apparatus, while spall performance was studied by ballistic testing and high-speed photography of each of three test configurations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1974
- Accession Number
- ADA002513
Entities
People
- John R. Plumer
Organizations
- United States Army Research Laboratory