Accession Number:

AD0255679

Title:

EFFECT OF INFRARED HEAT ON 45 DEGREE TENSILE STRENGTH OF TWO REINFORCED PHENOLIC LAMINATES

Descriptive Note:

Corporate Author:

FOREST PRODUCTS LAB MADISON WIS

Personal Author(s):

Report Date:

1961-03-01

Pagination or Media Count:

1.0

Abstract:

An investigation was made of the effect of airtransmitted heat energy versus radiated heat energy on the strength of reinforced plastic laminates. The study was conducted on tensile coupons from phenolic laminates made with either glass fabric or asbestos fibers and machined at 45 degrees to the natural axes. The results of the first series, in which the temperature of the coupons was increased on the surface at a constant rate before loading, show the characteristic drop in strength with increases in temperature from air heating and a slightly greater drop in strength with IR heating. The results of the second series in which the coupons were partially loaded and then heated with IR on one side from 1 to 29 Fsec until failure occurred, showed that the hot-side temperature increased with increasing rate of temperature rise furthermore the center temperature average of hot and cold side was relatively unaffected by rate of temperature rise. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE