ASTM-F734 › Historical Revision Information
Standard Test Method for Shear Strength of Fusion Bonded Polycarbonate Aerospace Glazing Material
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Scope
1.1 This test method determines the shear yield strength Fsy and shear ultimate strength Fsu of fusion bonds in polycarbonate by applying torsional shear loads to the fusion-bond line.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Significance and Use
At this writing, aerospace quality extruded transparent polycarbonate material is not available in thicknesses greater than 0.5 in. (12.7 mm). When a requirement exists for sheets thicker than 0.5 in. (12.7 mm), two or more sheets are fusion bonded together to form a single sheet of the desired thickness.
The structural integrity of the completed transparency depends on the integrity of the fusion bond. This test applies torsional shear loads to measure the structural integrity of the fusion bond. This test method is considered more reliable and more reproducible than shear tests in tension or compression.
Keywords
fusion bonded polycarbonate; shear strength; torsion ; Aerospace transparent enclosures; Fusion-bonded aerospace materials; Polycarbonate (PC); Shear testing--aerospace materials; ICS Number Code 49.025.40 (Rubber and plastics)
To find similar documents by ASTM Volume:
15.03 (Space Simulation; Aerospace and Aircraft; Composite Materials)
To find similar documents by classification:
49.025.40 (Rubber and plastics)
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Document Number
ASTM-F734-95(2011)
Revision Level
1995 R11 EDITION
Status
Superseded
Modification Type
Reapproval
Publication Date
May 15, 2012
Document Type
Test Method
Page Count
5 pages
Committee Number
F07.08