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ASTM D950-03

(Test Method)

Standard Test Method for Impact Strength of Adhesive Bonds

Standard Test Method for Impact Strength of Adhesive Bonds

SIGNIFICANCE AND USE
Adhesives can fail under a sudden impact load and not under a slowly applied load of the same or greater force.
This test method can be used to compare the sensitivity of various adhesives to suddenly applied loads.
SCOPE
1.1 This test method covers the determination of the comparative impact strength of adhesive bonds in shear, when tested on standard specimens under specified conditions of preparation, conditioning, and testing.
1.2 The values stated in SI units are to be regarded as the standard. The values 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-Sep-2003
Technical Committee
D14 - Adhesives
Drafting Committee
D14.80 - Metal Bonding Adhesives
Current Stage
Ref Project

Relations

Replaces
ASTM D950-98 - Standard Test Method for Impact Strength of Adhesive Bonds (Withdrawn 2003)
Effective Date
01-Oct-2003
Replaced By
ASTM D950-03(2011) - Standard Test Method for Impact Strength of Adhesive Bonds
Effective Date
01-Apr-2011
Referred By
ASTM D1183-03(2019) - Standard Practices for Resistance of Adhesives to Cyclic Laboratory Aging Conditions
Effective Date
01-Oct-2003
Referred By
ASTM D2093-03(2017) - Standard Practice for Preparation of Surfaces of Plastics Prior to Adhesive Bonding
Effective Date
01-Oct-2003
Referred By
ASTM D6465-99(2016) - Standard Guide for Selecting Aerospace and General Purpose Adhesives and Sealants
Effective Date
01-Oct-2003

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ASTM D950-03 - Standard Test Method for Impact Strength of Adhesive BondsASTM D950-03 - Standard Test Method for Impact Strength of Adhesive Bonds
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ASTM D950-03 - Standard Test Method for Impact Strength 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D950–03
Standard Test Method for
1
Impact Strength of Adhesive Bonds
This standard is issued under the fixed designation D950; 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 Department of Defense.
INTRODUCTION
The accuracy of the results of strength tests of adhesive bonds will depend on the conditions under
which the bonding process is carried out. Unless otherwise agreed upon between the manufacturer and
the purchaser, the bonding conditions shall be prescribed by the manufacturer of the adhesive. In order
to ensure that complete information is available to the individual conducting the tests, the
manufacturer of the adhesive shall furnish numerical values and other specific information for each of
the following variables:
(1) Procedure for preparation of surfaces prior to application of the adhesive the cleaning and
drying of metal surfaces, and special surface treatments such as sanding which are not specifically
limited by the pertinent test method.
(2) Complete mixing directions for the adhesive.
(3) Conditions for application of the adhesive including the rate of spread or thickness of film,
number of coats to be applied, whether to be applied to one or both surfaces, and the conditions of
drying where more than one coat is required.
(4) Assembly conditions before application of pressure, including the room temperature, length of
time, and whether open or closed assembly is to be used.
(5) Curing conditions, including the amount of pressure to be applied, the length of time under
pressure and the temperature of the assembly when under pressure. It should be stated whether this
temperature is that of the bond line, or of the atmosphere at which the assembly is to be maintained.
(6) Conditioning procedure before testing, unless a standard procedure is specified, including the
length of time, temperature, and relative humidity.
Arange may be prescribed for any variable by the manufacturer of the adhesive if it can be assumed
by the test operator that any arbitrarily chosen value within such a range or any combination of such
values for several variables will be acceptable to both the manufacturer and the purchaser of the
adhesive.
1. Scope priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
1.1 This test method covers the determination of the com-
parative impact strength of adhesive bonds in shear, when
2. Referenced Documents
tested on standard specimens under specified conditions of
2
2.1 ASTM Standards:
preparation, conditioning, and testing.
A108 Specification for Steel Bar, Carbon and Alloy, Cold-
1.2 The values stated in SI units are to be regarded as the
Finished
standard. The values in parentheses are for information only.
B16/B16M Specification for Free-Cutting Brass Rod, Bar
1.3 This standard does not purport to address all of the
and Shapes for Use in Screw Machines
safety concerns, if any, associated with its use. It is the
B107/B107M Specification for Magnesium-Alloy Extruded
responsibility of the user of this standard to establish appro-
Bars, Rods, Profiles, Tubes, and Wire
1
This test method is under the jurisdiction of ASTM Committee D14 on
Adhesives and is the direct responsibility of Subcommittee D14.80 on Metal
2
Bonding Adhesives. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Oct. 1, 2003. Published October 2003. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1952. Withdrawn April 2003 and reinstated as D950 – 03. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D0950-03. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D950–03
3
B133 Specification for Copper Rod, Bar, and Shapes specimen as near the adhesive line as possible, preferably
1
B139/B139M Specification for Phosphor Bronze Rod, Bar, within 0.79 mm ( ⁄32 in.). Ordinarily the distance between the
and Shapes top of the jaws of the vise of the machine and the bottom of the
B151/B151M Specification for Copper-Nickel-Zinc Alloy striking face of the head is 22 mm (0.866 in.), and proper
(Nickel Silver) and Copper-Nickel Rod and Bar height of the specimen may be obtained by adjusting its height
B211 Specification for Aluminum and Aluminum-Alloy in the jig.
Bar, Rod, and Wire
5.1.2 See Test Methods E23 for additional info
...

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