Accession Number:

AD0742601

Title:

A Ballistic Assessment of Eye Protector Lens Materials,

Descriptive Note:

Corporate Author:

DEFENCE STANDARDS LABS MARIBYRNONG (AUSTRALIA)

Personal Author(s):

Report Date:

1971-10-29

Pagination or Media Count:

7.0

Abstract:

The impact resistance of commonly used eye protector lens materials is measured with a ballistic system, using 14 inch 6.3 mm. and 18 inch 3.2 mm. steel balls. The results, taken in conjunction with the findings of earlier drop-tower work, permit a comprehensive evaluation of the impact resistance of 3 mm. and 2 mm. thicknesses of allyl resin and thermally toughened glass against a series of steel balls ranging in size from 1 18 inches 28.6 mm. to 18 inch 3.2 mm.. While 3 mm. toughened glass is stronger than 3 mm. allyl resin when impacted by the larger missiles, the position is reversed when the smaller missiles are used. This is held to postulate the need for both drop-tower and ballistic tests in acceptance requirements. Additionally, the relative inferiority of 2 mm. toughened glass at all points of the scale is shown. Author

Subject Categories:

  • Ballistics
  • Protective Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE