Accession Number:

ADA002513

Title:

Development of Scratch- and Spall-Resistant Windshields.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS

Personal Author(s):

Report Date:

1974-08-01

Pagination or Media Count:

22.0

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.

Subject Categories:

  • Helicopters

Distribution Statement:

APPROVED FOR PUBLIC RELEASE