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Accession Number:
AD0018554
Title:
DEVELOPMENT OF NON-DESTRUCTIVE TESTS FOR LAMINATED GUNSTOCK BLANKS
Corporate Author:
YALE UNIV NEW HAVEN CT SCHOOL OF FORESTRY
Report Date:
1953-10-08
Abstract:
Four black-walnut gunstocks with lamination planes parallel, and 4 with lamination planes normal, to the wide face of the butt were laminated. Half of the blanks were laminated with pure Cascophen LT-67, a phenol formaldehyde adehsive the others were laminated with a modified adhesive containing 15 wt- of BaSo4. All were assembled with void, waxed, and cellophane-containing areas. Ultrasonic tests in water between 68 and 82 F did not reliably or definitely indicate the defects. Voids in pure-adhesive bonds were not revealed by 0.9-sec x-ray exposures taken at 45 kv and 60 ma those indicated by ultrasonic transmissions in BaSoO4-containing adhesive were clearly evident in x-rays. However, x-rays were unsuccessful in detecting the other defects. Shear-test data which were obtained following the defect tests suggested the possibility of correlating the acoustic damping capacity of laminated specimens with recognized destructive tests. See also AD-16 403
Pages:
0019
Distribution Statement:
Approved for public release; distribution is unlimited. Document partially illegible.
File Size:
0.00MB
