Inside Out Library · Explore
Resistance of Transparent Plastics to Impact (1939)
NASA Technical Reports Server (NTRS) · leaf 23
Fig. 5 N.A.C.A. Technical Note No. 718 … 1. Cellulose acetate B4; failed on second impact of 0,5 lb. steel ball dropped 65 feet. 2. ~ Cellulose acetate B5; failed on eighth impact of 0.5 lb. steel ball dropped 65 feet. 3. - Cellulose acetate Al; failed on seventh impact of 1 lb. shot-filled tennis ball dropped 65 feet. 4. - Cellulose…NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
More pictures from Resistance of Transparent Plastics to Impact
More like this
