Standard Practice for Atmospheric Exposure of Adhesive-Bonded Joints and Structures

SIGNIFICANCE AND USE
4.1 The atmospheric exposure tests described in this practice will evaluate the stability of the adhesive bond only in terms of a particular natural atmosphere. Since the atmospheric conditions vary greatly from year to year, these results will not be as reproducible as those derived from laboratory aging procedures. Considerable research has shown that laboratory artificial weathering tests will not give consistently good correlation with outdoor test exposures (2, 3, 4).
SCOPE
1.1 This practice covers the procedure for the direct exposure of adhesive bonded joints and structures to natural atmospheric environments.  
1.2 The procedure for sheltered atmospheric exposure, such as a Stevenson screen (1),2 of adhesive-bonded joints and specimens is the same except for the requirements of facing south and measurement of solar radiation.  
1.3 This practice is limited to the procedure by which samples are exposed and does not cover the tests that may be used to evaluate the effects of atmospheric exposure on these adhesive-bonded joints and structures. These samples could be any one of several varieties.  
1.3.1 A complete structure for test,  
1.3.2 A section of a structure for test,  
1.3.3 A complete structure or section with strength observations on specimens cut therefrom,  
1.3.4 Test specimens themselves, or  
1.3.5 Any of the above, mounted under stress.  
1.4 Suitable test methods for evaluation of the effects of exposure include nondestructive qualitative or quantitative observations on the same sample at prescribed intervals, or destructive tests on separate sets of specimens in accordance with such tests as Test Method D1002. Note 1—See Test Methods D896 and D897.  
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.6 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-Jun-2013
Technical Committee
Current Stage
Ref Project

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ASTM D1828-01(2013) - Standard Practice for Atmospheric Exposure of Adhesive-Bonded Joints and Structures
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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: D1828 − 01 (Reapproved 2013)
Standard Practice for
Atmospheric Exposure of Adhesive-Bonded Joints and
1
Structures
This standard is issued under the fixed designation D1828; 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 2. Referenced Documents
3
1.1 This practice covers the procedure for the direct expo- 2.1 ASTM Standards:
sure of adhesive bonded joints and structures to natural D896 Practice for Resistance of Adhesive Bonds to Chemi-
atmospheric environments. cal Reagents
D897 Test Method for Tensile Properties ofAdhesive Bonds
1.2 The procedure for sheltered atmospheric exposure, such
2 D907 Terminology of Adhesives
as a Stevenson screen (1), of adhesive-bonded joints and
D1002 Test Method for Apparent Shear Strength of Single-
specimens is the same except for the requirements of facing
Lap-Joint Adhesively Bonded Metal Specimens by Ten-
south and measurement of solar radiation.
sion Loading (Metal-to-Metal)
1.3 This practice is limited to the procedure by which
2.2 ASTM Adjuncts:
samples are exposed and does not cover the tests that may be
4
ASTM Standard Racks and Pipe Frames Blueprints
used to evaluate the effects of atmospheric exposure on these
adhesive-bonded joints and structures. These samples could be
3. Terminology
any one of several varieties.
3.1 Definitions:
1.3.1 A complete structure for test,
3.1.1 Many terms used in this practice are defined in
1.3.2 A section of a structure for test,
Terminology D907.
1.3.3 A complete structure or section with strength obser-
vations on specimens cut therefrom,
4. Significance and Use
1.3.4 Test specimens themselves, or
4.1 The atmospheric exposure tests described in this prac-
1.3.5 Any of the above, mounted under stress.
tice will evaluate the stability of the adhesive bond only in
1.4 Suitable test methods for evaluation of the effects of
termsofaparticularnaturalatmosphere.Sincetheatmospheric
exposure include nondestructive qualitative or quantitative
conditions vary greatly from year to year, these results will not
observations on the same sample at prescribed intervals, or
be as reproducible as those derived from laboratory aging
destructive tests on separate sets of specimens in accordance
procedures. Considerable research has shown that laboratory
with such tests as Test Method D1002.
artificial weathering tests will not give consistently good
NOTE 1—See Test Methods D896 and D897.
correlation with outdoor test exposures (2, 3, 4).
1.5 The values stated in SI units are to be regarded as the
5. Exposure Sites
standard. The values given in parentheses are for information
only. 5.1 The choice of exposure sites is dependent upon the
objective of the particular test program.
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5.2 In the cases of both metallic and nonmetallic adherends,
responsibility of the user of this standard to establish appro-
choose exposure sites to include variations in average tempera-
priate safety and health practices and determine the applica-
ture (and temperature range), relative humidity, and precipita-
bility of regulatory limitations prior to use.
tion.
1 3
This practice is under the jurisdiction ofASTM Committee D14 on Adhesives For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and is the direct responsibility of Subcommittee D14.40 on Adhesives for Plastics. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved July 1, 2013. Published July 2013. Originally approved Standards volume information, refer to the standard’s Document Summary page on
in 1961. Last previous edition approved in 2007 as D1828 – 01 (2007). DOI: the ASTM website.
4
10.1520/D1828-01R13. Blueprints of ASTM standard racks and pipe frames may be obtained from
2
The boldface numbers in parentheses refer to the list of references at the end of ASTM International Headquarters. OrderAdjunct No. ADJD1828. Original adjunct
this practice. produced in 1957.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D1828 − 01 (2013)
6. Apparatus 7.3 The number of samples is based on a statistical analysis
4 of the test program consistent with the number of specimens in
6.1 Racks—Expose the sample on racks which are so
each sample. The number of specimens for each removal
positioned that the exposed surfaces are at an angle of 45° to
period is in accordance with the number required by
...

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