ASTM D2293-96(2002)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D2293–96(Reapproved2002)
Standard Test Method for
Creep Properties of Adhesives in Shear by Compression
Loading (Metal-to-Metal)
This standard is issued under the fixed designation D 2293; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4.2 The relative size and simplicity of design of the spring-
loaded apparatus permits easy portability and transfer from one
1.1 This test method covers the determination of the creep
environment to the next without disturbing static loads.
properties of adhesives for bonding metals when tested on a
4.3 The relative simplicity of design with inexpensive
standard specimen and subjected to certain conditions of
materials permits replication of creep tests at relatively low
temperature and compressive stress in a spring-loaded testing
costs.
apparatus.
1.2 The values stated in SI units are to be regarded as
5. Apparatus
standard. The inch-pound units in parentheses are for informa-
5.1 Compression Creep Test Apparatus, as shown in Fig. 1
tion only.
and Fig. 2.
1.3 This standard does not purport to address all of the
5.2 Microscope, calibrated, with Filar microeyepiece and
safety concerns, if any, associated with its use. It is the
103 objective lens.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
6. Test Specimens
bility of regulatory limitations prior to use.
6.1 Test specimens shall conform to the form and dimen-
sions shown in Fig. 3. These specimens are similar to the
2. Referenced Documents
tension lap shear specimens described in Test Method D 1002,
2.1 ASTM Standards:
2 except that the length of either side of the shear area shall be
D 907 Terminology of Adhesives
1 1
6.35 mm ( ⁄4 in.) rather than 88.9-mm (3 ⁄2-in.) minimum.
D 1002 Test Method forApparent Shear Strength of Single-
6.2 A complete description of these specimens and the
Lap-Joint Adhesively Bonded Metal Specimens by Ten-
2 method of preparation is given in Sections 6, 7, and 8 of Test
sion Loading (Metal-to-Metal)
Method D 1002.
3. Terminology 6.3 For creep measurements, polish the edges of the bonded
area of each test specimen, and scribe with three fine lines
3.1 Definitions—Many terms in this test method are defined
across the bondline.
in Terminology D 907.
7. Procedure
4. Significance and Use
7.1 To conduct a creep test, center the specimen within the
4.1 This test method is useful in research and development
slot between the washer and bushing of the apparatus as shown
for comparison of creep properties of adhesives, particularly as
in Fig. 1. Compress the spring between the two bushings to the
those properties are affected by changes in adhesive formula-
desired load by tightening the nut. The correct load can be
tion or expected service conditions, including temperature,
applied by deflecting the spring a given measured amount as
moisture level, and duration of loading.
determined from a calibration curve.
7.2 To measure total deflection, observe the average dis-
This test method is under the jurisdiction of ASTM Committee D14 on
placement of fine razor scratches across the centers of both
Adhesives and is the direct responsibility of Subcommittee D14.80 on Metal
sides of the lap joints with a calibrated microscope having a
Bonding Adhesives.
Filar microeyepiece and a 103 objective lens.
Current edition approved Sept. 10, 1996. Published November 1996. Originally
published as D 2293 – 64 T. Last previous edition D 2293 – 92.
Annual Book of ASTM Standards, Vol 15.06.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D2293–96 (2002)
A—Slotted bolt
B—Bushing
C—Spring—piano wire cylindrical helical compression spring with six active
FIG. 2 Compression Creep Test Apparatus, Details
coils, eight total coils, wound closed, ground square, and
...