ASTM D1781-98(2004)
(Test Method)Standard Test Method for Climbing Drum Peel for Adhesives
Standard Test Method for Climbing Drum Peel for Adhesives
SIGNIFICANCE AND USE
This test method may be used to determine comparative rather than fundamental measurements of adhesion and is particularly suitable for process control, some examples of which are listed.
5.1.1 This test method is particularly sensitive to adherend surface preparation and is of value where the adhesive is used in conjunction with a primer.
5.1.2 When a relatively brittle adhesive is used, the peel resistance can often give an indication of the degree of cure, that is, higher values than normally realized may indicate an incomplete cure. Direct comparison of different adhesives or processes can only be made when specimen design and test conditions are identical.
SCOPE
1.1 This test method covers the determination of the peel resistance of adhesive bonds between: a relatively flexible adherend and a rigid adherend; and the relatively flexible facing of a sandwich structure and its core, when tested under specified conditions.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D1781– 98(Reapproved2004)
Standard Test Method for
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Climbing Drum Peel for Adhesives
This standard is issued under the fixed designation D1781; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Terminology
1.1 This test method covers the determination of the peel 3.1 Definitions—Many of the terms used in this test method
resistance of adhesive bonds between: a relatively flexible are defined in Terminology D907.
adherend and a rigid adherend; and the relatively flexible
4. Summary of Test Method
facing of a sandwich structure and its core, when tested under
specified conditions. 4.1 Determine the peeling force of a conditioned adhesive
bonded sandwich assembly by peeling a face skin around a
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information circular drum. This is done by clamping the assembly in a
universal test machine. The average peeling load is determined
only.
1.3 This standard does not purport to address all of the using a standard formula.
safety concerns, if any, associated with its use. It is the
5. Significance and Use
responsibility of the user of this standard to establish appro-
5.1 This test method may be used to determine comparative
priate safety and health practices and determine the applica-
rather than fundamental measurements of adhesion and is
bility of regulatory limitations prior to use.
particularly suitable for process control, some examples of
2. Referenced Documents
which are listed.
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2.1 ASTM Standards: 5.1.1 This test method is particularly sensitive to adherend
surface preparation and is of value where the adhesive is used
B209 Specification for Aluminum and Aluminum-Alloy
Sheet and Plate in conjunction with a primer.
D907 Terminology of Adhesives 5.1.2 When a relatively brittle adhesive is used, the peel
resistance can often give an indication of the degree of cure,
E4 Practices for Force Verification of Testing Machines
2.2 ASTM Adjuncts: that is, higher values than normally realized may indicate an
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incomplete cure. Direct comparison of different adhesives or
Climbing Drum Peel Tester
processes can only be made when specimen design and test
conditions are identical.
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This test method is under the jurisdiction of ASTM Committee D14 on
Adhesives and is under the jurisdiction of Subcommittee D14.80 on Metal Bonding
6. Apparatus
Adhesives.
Current edition approved April 1, 2004. Published April 2004. Originally 6.1 Peeling Apparatus, consisting of a flanged drum, flex-
approved in 1960. Last previous edition approved in 1998 as D1781 – 98. DOI:
ible loading straps or cables, and suitable clamps for holding
10.1520/D1781-98R04.
the test specimen. The apparatus illustrated in Fig. 1 has been
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
found to be satisfactory.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
6.1.1 The outside radius of the drum is 51.00 6 0.13 mm
the ASTM website.
(2.000 6 0.005 in.), and the radius of the flange, including one
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Detailed working drawings for the apparatus illustrated are available from
half of the thickness of the loading straps or cables, is 12.70 6
ASTM International, 100 Barr Harbor Drive, West Conshohocken PA 19428-2959.
Request ADJD1781. 0.13mm(0.500 60.005in.)largerthantheradiusofthedrum.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D1781– 98 (2004)
6.1.2 Use a suitable top clamp (Fig. 2) for supporting the
specimen, and a drum clamp (Fig. 3) to hold the adherend
against the face of the drum.
6.1.3 Balance the drum about the axis by the use of
counterweights (as shown in Fig. 1) placed diametrically
opposite the drum clamp to compensate for the weight of this
clamp.
6.1.4 The drum and flanges with the drum clamp and its
compensating weight weighs# 3.6 kg (8 lb), a lighter weight
,
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being preferable to facilitate handling of the apparatus.
6.2 Testing Machine, capable of applying tensile loads
under the conditions prescribed in Section 11 and with the
following further requirements:
6.2.1 The rate of movement between heads of the testing
machine remains essentially constant under fluctuating loads
(Note 1).
6.2.2 The testing machine weighs the load to within 1 %.
The testing machine and range are selecte
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