ASTM-D7249 Historical Revision Information
Standard Test Method for Facesheet Properties of Sandwich Constructions by Long Beam Flexure

ASTM-D7249 - 2020 EDITION - CURRENT
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Standard Test Method for Facesheet Properties of Sandwich Constructions by Long Beam Flexure
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Scope

1.1 This test method covers determination of facing properties of flat sandwich constructions subjected to flexure in such a manner that the applied moments produce curvature of the sandwich facing planes and result in compressive and tensile forces in the facings. Permissible core material forms include those with continuous bonding surfaces (such as balsa wood and foams) as well as those with discontinuous bonding surfaces (such as honeycomb).

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text the inch-pound units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

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.

Note 1 - Alternate procedures for determining the compressive strength of unidirectional polymer matrix composites materials in a sandwich beam configuration may be found in Test Method D 5467.

Keywords

bending stress; facing modulus; facing stress; facing strength; flexural stiffness; sandwich construction; sandwich deflection; ICS Number Code 79.060.01 (Wood-based panels in general)

To find similar documents by ASTM Volume:

15.03 (Space Simulation; Aerospace and Aircraft; Composite Materials)

To find similar documents by classification:

79.060.01 (Wood-based panels in general)

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Document Number

ASTM-D7249_D7249M-20

Revision Level

2020 EDITION

Status

Current

Modification Type

New

Publication Date

Feb. 1, 2020

Document Type

Test Method

Page Count

10 pages

Committee Number

D30.09