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Significance and Use
This test method determines the cleavage force required to peel stiff facings from the core of sandwich panels, and is used to determine how well the facing is bonded to the core. Test Method D1781 only works well with flexible facings. As a guideline, the cleavage test method would work better on sandwich panels that have facings with a bending stiffness (EI) of greater than approximately 27.3 lbs-in2/inch width (3.09 kN·mm2/mm width). This converts to approximately 0.032 in. (0.81 mm) 6061 T6 aluminum alloy, 0.023 in. (0.57 mm) steel, and 0.046 in. (1.18 mm) fiberglass facings.
1.1 This test method covers the determination of the cleavage force to peel stiff facings from sandwich panels.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1781 Test Method for Climbing Drum Peel for Adhesives
E4 Practices for Force Verification of Testing Machines
ICS Number Code 83.180 (Adhesives)
UNSPSC Code 30162400(Partition walls); 31200000(Adhesives and sealants)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM E2004-10, Standard Test Method for Facing Cleavage of Sandwich Panels, ASTM International, West Conshohocken, PA, 2010, www.astm.orgBack to Top