Accession Number : AD0757306

Title :   A Comparative Assessment of Eye Protective Devices and a Proposed System of Acceptance Testing and Grading,

Corporate Author : AUSTRALIAN DEFENCE SCIENTIFIC SERVICE MELBOURNE

Personal Author(s) : Wigglesworth,E. C.

Report Date : 10 JUN 1971

Pagination or Media Count : 18

Abstract : The paper presents the results of ballistic and, where appropriate, drop-ball tests on the following plano eye protective devices: (i) goggles fitted with polycarbonate, cellulose acetate, gauze and polymethyl methacrylate lenses; (ii) faceshields with cellulose acetate visors; and (iii) several clip-on configurations. The results are discussed separately and are also presented graphically to permit comparison with earlier similar data for allyl resin and thermally toughened glass. These results suggest the need for a gradation of eye protective devices based on impact resistance. Suitable tests, using a 25 mm diameter steel ball and a 3 mm steel ball are suggested. The impact strength and scratch susceptibility of currently available materials are compared. No completely suitable material is currently available, and there is need for a new protective material that has good optical properties, high impact resistance, good scratch resistance, good cosmetic appearance and long life, and that, in addition, is cheap, light-weight, and readily worked. (Author)

Descriptors :   (*PROTECTIVE COVERINGS, *EYE), INDUSTRIAL MEDICINE, SHOCK RESISTANCE, OPTICAL PROPERTIES, TENSILE PROPERTIES, ACCEPTABILITY, EFFICIENCY

Subject Categories : Protective Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE