ASTM D5265-03
(Test Method)Standard Test Method for Bridge Impact Testing
Standard Test Method for Bridge Impact Testing
SIGNIFICANCE AND USE
Materials shipped in long, narrow packages, with lengths at least three times their width or height, are liable to damage as a result of impact near their midpoint when only the ends are supported. This type of damage can occur during the shipment of packaging of mixed dimensions. It is particularly prevalent during conveyer line transport and sortation. This test method provides a means of determining resistance to such damage.
SCOPE
1.1 This test method is intended to determine the capability of a long package with a narrow cross-section to resist impact near its center when the package is supported only at its ends. This test method allows the user to select from two test options: Option A employs the use of a free-fall drop tester (see Exhibit B), and Option B employs the use of simulated mechanical impact testing equipment (SMITE; see Exhibit A). The two optional procedures are designed to impart the same amount of kinetic energy at impact; therefore, each procedure yields equal damage-producing potential.
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 problems, 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)
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Designation:D5265–03
Standard Test Method for
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Bridge Impact Testing
This standard is issued under the fixed designation D 5265; 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 3.2 Definitions of Terms Specific to This Standard:
3.2.1 elongate package—a package that is long in propor-
1.1 This test method is intended to determine the capability
tion to width and thickness, with lengths at least three times
of a long package with a narrow cross-section to resist impact
their width or height.
near its center when the package is supported only at its ends.
Thistestmethodallowstheusertoselectfromtwotestoptions:
4. Significance and Use
OptionAemploys the use of a free-fall drop tester (see Exhibit
4.1 Materials shipped in long, narrow packages, with
B), and Option B employs the use of simulated mechanical
lengths at least three times their width or height, are liable to
impact testing equipment (SMITE; see Exhibit A). The two
damage as a result of impact near their midpoint when only the
optional procedures are designed to impart the same amount of
ends are supported. This type of damage can occur during the
kineticenergyatimpact;therefore,eachprocedureyieldsequal
shipment of packaging of mixed dimensions. It is particularly
damage-producing potential.
prevalentduringconveyerlinetransportandsortation.Thistest
1.2 The values stated in SI units are to be regarded as the
method provides a means of determining resistance to such
standard. The values given in parentheses are for information
damage.
only.
1.3 This standard does not purport to address all of the
5. Apparatus
safety problems, if any, associated with its use. It is the
5.1 Option A—Free-Fall Drop Tester, conforming to the
responsibility of the user of this standard to establish appro-
conditions specified in 10.2.1 (see Fig. 1).
priate safety and health practices and determine the applica-
5.1.1 Impactor,composedofadensehardwood,withamass
bility of regulatory limitations prior to use.
of 5.7 6 0.2 kg (12.546 0.4 lb), length of approximately 610
w
mm (24 in.), and width of 178 mm (7 in.). The depth can be
2. Referenced Documents
2 adjusted to obtain the desired weight as stated above. The long
2.1 ASTM Standards:
edges of the impactor shall be rounded to a radius of 6 62mm
D 644 Test Method for Moisture Content of Paper and
1 1
( ⁄4 6 ⁄16 in.).
Paperboard by Oven Drying
D 685 Practice for Conditioning Paper and Paper Products
NOTE 1—If a lighter wood is used, the depth can be adjusted to achieve
for Testing the correct mass.
D 996 Terminology of Packaging and Distribution Environ-
5.1.2 Support Blocks, made from hardwood, nominal 150
ments
by 150 mm (6 by 6 in.), long enough to support the full width
D 4332 Practice for Conditioning Containers, Packages, or
of the largest package to be tested.
Packaging Components for Testing
5.2 Option B—Commercial SMITE Tester, using a guided
E 122 Practice for Choice of Sample Size to Estimate a
impactor and velocity meter to calculate the theoretical free-
Measure of Quality for a Lot or Process
fall drop of the missile (see Fig. 2).
5.2.1 SMITE Tester Impactor (missile), fabricated in a
3. Terminology
U-shape cross-section from a steel flat plate, with a mass of
3.1 Definitions—The terms and definitions used in this test
22.68 60.2kg (50 60.4lb)andlengthofapproximately760
w
method may be found in Terminology D 996.
mm (30 in.). The long edges of the missile shall be rounded to
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a radius of 6 62mm( ⁄4 6 ⁄16 in.).
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This test method is under the jurisdiction of ASTM Committee D10 on
NOTE 2—The standard SMITE tester is equipped with a variety of
Packaging and is the direct responsibility of Subcommittee D10.22 on Handling and
interchangeable missiles, providing impact options ranging from flat drop,
Transportation.
angle edge drop, half round, half ball, and corner. The total missile
Current edition approved Oct. 1, 2003. Published December 2003. Originally
e1
approved in 1992. Last previous edition approved in 1992 as D 5265–92(98) assembly, regardless of which face is used, will weigh 22.68 kg (50 lb).
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Knowing this, the mass of a SMITE tester is always 22.68 kg.
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
the ASTM website.
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D5265–03
6. Sampling
6.1 Th
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