ASTM-F734 Standard Test Method for Shear Strength of Fusion Bonded Polycarbonate Aerospace Glazing Material

ASTM-F734 - 2017 EDITION - CURRENT
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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.

1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Significance and Use

5.1 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.

5.2 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 ;; 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-F734-17

Revision Level

2017 EDITION

Status

Current

Modification Type

Revision

Publication Date

June 15, 2017

Document Type

Test Method

Page Count

5 pages

Committee Number

F07.08