Standard Practice for Determining Strength Development of Adhesive Bonds

SIGNIFICANCE AND USE
This practice contains suggested provisions for reporting strength values. Any ASTM test method for determining strength properties of adhesive bonds may be used. This practice is not intended to determine the pot or working life of two-component epoxy of similar type adhesives. Refer to Practice D 1338. It should be noted that there are adhesives whose testing requires special techniques and whose properties are difficult to reproduce from tester to tester. These variables should be kept in mind when analyzing the data obtained using this practice.
SCOPE
1.1 This practice covers the determination of the strength development of adhesive bonds when tested on a standard specimen under specified conditions of preparation and testing. It is applicable to adhesives in liquid or paste form that require curing at specified conditions of time and temperature or specific substrate preparation. It is intended primarily to be used with metal-to-metal adherends; however, plastics, woods, glass, or combinations of these may be substituted.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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
31-Mar-2005
Technical Committee
Drafting Committee
Current Stage
Ref Project

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ASTM D1144-99(2005) - Standard Practice for Determining Strength Development of Adhesive Bonds
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D1144–99(Reapproved2005)
Standard Practice for
Determining Strength Development of Adhesive Bonds
This standard is issued under the fixed designation D1144; 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.
1. Scope 3.2.2 fixture time (set time), n—theshortesttimerequiredby
an adhesive to develop handling strength such that test speci-
1.1 This practice covers the determination of the strength
mens can be removed from fixtures, unclamped, or handled
development of adhesive bonds when tested on a standard
without stressing the bond, thereby affecting bond strength.
specimen under specified conditions of preparation and testing.
3.2.3 handling strength, n—a low level of strength initially
It is applicable to adhesives in liquid or paste form that require
obtained by an adhesive that allows specimens to be handled,
curing at specified conditions of time and temperature or
moved, or unclamped without causing disruption of the curing
specific substrate preparation. It is intended primarily to be
process or affecting bond strength.
used with metal-to-metal adherends; however, plastics, woods,
glass, or combinations of these may be substituted.
4. Significance and Use
1.2 The values stated in SI units are to be regarded as the
4.1 This practice contains suggested provisions for report-
standard. The values given in parentheses are for information
ing strength values. Any ASTM test method for determining
only.
strength properties of adhesive bonds may be used. This
1.3 This standard does not purport to address all of the
practice is not intended to determine the pot or working life of
safety concerns, if any, associated with its use. It is the
two-component epoxy of similar type adhesives. Refer to
responsibility of the user of this standard to establish appro-
Practice D1338. It should be noted that there are adhesives
priate safety and health practices and determine the applica-
whose testing requires special techniques and whose properties
bility of regulatory limitations prior to use.
are difficult to reproduce from tester to tester. These variables
2. Referenced Documents should be kept in mind when analyzing the data obtained using
this practice.
2.1 ASTM Standards:
D907 Terminology of Adhesives
5. Test Specimens
D1002 Test Method forApparent Shear Strength of Single-
5.1 It is suggested that lap-type shear specimens in accor-
Lap-Joint Adhesively Bonded Metal Specimens by Ten-
dance with Test Method D1002, be used. Other types of test
sion Loading (Metal-to-Metal)
specimens may be used with agreement between the manufac-
D1338 Practice for Working Life of Liquid or Paste Adhe-
turer and the purchaser.
sives by Consistency and Bond Strength
6. Preparation of Test Specimens
3. Terminology
6.1 Prepare test specimens in accordance with Test Method
3.1 Definitions—Severaltermsinthispracticearedefinedin
D1002, or other applicable test method. Prepare the bonding
accordance with Terminology D907.
surface by a method mutually agreed upon between the
3.2 Definitions of Terms Specific to This Standard:
manufacturer and the purchaser. Vapor phase degreasing, grit
3.2.1 activator, or accelerator (surface), n—an adhesive
blasting,handabrasion,ortestingonoiledsurfacesaresomeof
curingagentthatisappliedtoabondingsurfaceforthepurpose
the methods that are available. If a surface activator or
of affecting or speeding, or both, the cure of an adhesive.
accelerator is used, apply it in accordance with the instructions
of the manufacturer. Use one- or two- surface activation as
agreed upon between the manufacturer and the purchaser.
This practice is under the jurisdiction of ASTM Committee D14 on Adhesives
Allow assembled specimens to cure at the temperature and
and is the direct responsibility of Subcommittee D14.10 on Working Properties.
period of time prescribed by the manufacturer to develop full
Current edition approved April 1, 2005. Published April 2005. Originally
strength.This is intended to determine if any post curing of the
approved in 1952. Last previous edition approved in 1999 as D1144 – 99. DOI:
10.1520/D1144-99R05.
adhesive occurs that would cause a strength increase and
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
decrease. Bond strength variability could be caused by em-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
brittlement or a further hardening of the adhesive during the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. cure cycle.
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D1144–99 (2005)
6.2 In addition, prepare a
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