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ASTM D1781-98(2012)

(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.
This test method is particularly sensitive to adherend surface preparation and is of value where the adhesive is used in conjunction with a primer.
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

Status
Historical
Publication Date
30-Apr-2012
ICS
83.180 - Adhesives
Technical Committee
D14 - Adhesives
Drafting Committee
D14.80 - Metal Bonding Adhesives
Current Stage
Ref Project

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ASTM D1781-98(2012) - Standard Test Method for Climbing Drum Peel for AdhesivesASTM D1781-98(2012) - Standard Test Method for Climbing Drum Peel for Adhesives
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ASTM D1781-98(2012) - Standard Test Method for Climbing Drum Peel for Adhesives
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 (Reapproved 2012)
Standard Test Method for
1
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 U.S. Department of Defense.
1. Scope 4. Summary of Test Method
4.1 Determine the peeling force of a conditioned adhesive
1.1 This test method covers the determination of the peel
bonded sandwich assembly by peeling a face skin around a
resistance of adhesive bonds between: a relatively flexible
circular drum. This is done by clamping the assembly in a
adherend and a rigid adherend; and the relatively flexible
universal test machine. The average peeling load is determined
facing of a sandwich structure and its core, when tested under
using a standard formula.
specified conditions.
1.2 The values stated in SI units are to be regarded as the
5. Significance and Use
standard. The values given in parentheses are for information
5.1 This test method may be used to determine comparative
only.
rather than fundamental measurements of adhesion and is
1.3 This standard does not purport to address all of the
particularly suitable for process control, some examples of
safety concerns, if any, associated with its use. It is the
which are listed.
responsibility of the user of this standard to establish appro-
5.1.1 This test method is particularly sensitive to adherend
priate safety and health practices and determine the applica-
surface preparation and is of value where the adhesive is used
bility of regulatory limitations prior to use.
in conjunction with a primer.
5.1.2 When a relatively brittle adhesive is used, the peel
2. Referenced Documents
resistance can often give an indication of the degree of cure,
2
that is, higher values than normally realized may indicate an
2.1 ASTM Standards:
incomplete cure. Direct comparison of different adhesives or
B209 Specification for Aluminum and Aluminum-Alloy
processes can only be made when specimen design and test
Sheet and Plate
conditions are identical.
D907 Terminology of Adhesives
E4 Practices for Force Verification of Testing Machines
6. Apparatus
2.2 ASTM Adjuncts:
6.1 Peeling Apparatus, consisting of a flanged drum, flex-
3
Climbing Drum Peel Tester
ible loading straps or cables, and suitable clamps for holding
the test specimen. The apparatus illustrated in Fig. 1 has been
3. Terminology
found to be satisfactory.
3.1 Definitions—Many of the terms used in this test method
6.1.1 The outside radius of the drum is 51.00 6 0.13 mm
are defined in Terminology D907.
(2.000 6 0.005 in.), and the radius of the flange, including one
half of the thickness of the loading straps or cables, is 12.70 6
0.13mm(0.500 60.005in.)largerthantheradiusofthedrum.
1
This test method is under the jurisdiction of ASTM Committee D14 on
This 12.70 6 0.13 mm (0.500 6 0.005 in.) less half the
Adhesives and is under the jurisdiction of Subcommittee D14.80 on Metal Bonding
thickness of the adherend to be peeled, is the effective torque
Adhesives.
Current edition approved May 1, 2012. Published May 2012. Originally
arm of the apparatus.
approved in 1960. Last previous edition approved in 2004 as D1781 – 98 (2004).
6.1.2 Use a suitable top clamp (Fig. 2) for supporting the
DOI: 10.1520/D1781-98R12.
2 specimen, and a drum clamp (Fig. 3) to hold the adherend
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
against the face of the drum.
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
6.1.3 Balance the drum about the axis by the use of
the ASTM website.
counterweights (as shown in Fig. 1) placed diametrically
3
Detailed working drawings for the apparatus illustrated are available from
opposite the drum clamp to compensate for the weight of this
ASTM International Headquarters. OrderAdjunct No. ADJD1781. Original adjunct
produced in 1960. clamp.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D1781 − 98 (2012)
6.1.4 The drum and flanges with the drum clamp and its
compensating weight weighs ≤3.6 kg (8 lb), a lighter weight
4,3
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
...

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SCOPE
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1.1 This terminology standard is a compilation of definitions used in the science and technology of the adhesives industry. Terms that are generally understood or adequately defined in other readily available sources are not included.  
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