ASTM D1002-05

Standard Test Method for Apparent Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens by Tension Loading (Metal-to-Metal)

SIGNIFICANCE AND USE
This test method is primarily comparative. However, it does have application as a discriminator in determining variations in adherend surface preparation parameters and adhesive environmental durability. The test method has found applications in controlling surface preparations, primer, and adhesive systems for determining strength properties of tested systems.  
The misuse of strength values obtained from this test method as design-allowable stress values for structural joints could lead to product failure, property damage, and human injury. The apparent shear strength of an adhesive obtained from a given small single-lap specimen may differ from that obtained from a joint made with different adherends or by a different bonding process. The normal variation of temperature and moisture in the service environment causes the adherends and the adhesive to swell or shrink. The adherends and adhesive are likely to have different thermal and moisture coefficients of expansion.
Even in small specimens, short-term environmental changes may induce internal stresses or chemical changes in the adhesive that permanently affect the apparent strength and other mechanical properties of the adhesive. The problem of predicting joint behavior in a changing environment is even more difficult if a different type of adherend is used in a larger structural joint than was used in the small specimen.
The apparent shear strength measured with a single-lap specimen is not suitable for determining design-allowable stresses for designing structural joints that differ in any manner from the joints tested without thorough analysis and understanding of the joint and adhesive behaviors.
Single-lap tests may be used for comparing and selecting adhesives or bonding processes for susceptibility to fatigue and environmental changes, but such comparisons must be made with great caution since different adhesives may respond differently in different joints. See Guide D 4896 for further discussion ...
SCOPE
1.1 This test method covers the determination of the apparent shear strengths of adhesives for bonding metals when tested on a standard single-lap-joint specimen and under specified conditions of preparation and test.
1.2 The values stated in SI units are considered to be 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: 30-Sep-2005
• ICS: 83.180 - Adhesives
• Technical Committee: D14 - Adhesives
• Drafting Committee: D14.80 - Metal Bonding Adhesives

Relations

• Replaces: ASTM D1002-01 - Standard Test Method for Apparent Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens by Tension Loading (Metal-to-Metal)
• Effective Date: 01-Oct-2005
• Referred By: ASTM D2295-96(2016) - Standard Test Method for Strength Properties of Adhesives in Shear by Tension Loading at Elevated Temperatures (Metal-to-Metal)
• Effective Date: 01-Oct-2005
• Referred By: ASTM D3166-99(2020) - Standard Test Method for Fatigue Properties of Adhesives in Shear by Tension Loading (Metal/Metal)
• Effective Date: 01-Oct-2005
• Referred By: ASTM D1144-99(2021) - Standard Practice for Determining Strength Development of Adhesive Bonds
• Effective Date: 01-Oct-2005
• Referred By: ASTM D1183-03(2019) - Standard Practices for Resistance of Adhesives to Cyclic Laboratory Aging Conditions
• Effective Date: 01-Oct-2005
• Referred By: ASTM D2294-96(2016) - Standard Test Method for Creep Properties of Adhesives in Shear by Tension Loading (Metal-to-Metal)
• Effective Date: 01-Oct-2005
• Referred By: ASTM D5868-01(2023) - Standard Test Method for Lap Shear Adhesion for Fiber Reinforced Plastic (FRP) Bonding
• Effective Date: 01-Oct-2005
• Referred By: ASTM D4896-01(2016) - Standard Guide for Use of Adhesive-Bonded Single Lap-Joint Specimen Test Results
• Effective Date: 01-Oct-2005
• Referred By: ASTM D1151-00(2022) - Standard Practice for Effect of Moisture and Temperature on Adhesive Bonds
• Effective Date: 01-Oct-2005
• Referred By: ASTM D896-04(2017) - Standard Practice for Resistance of Adhesive Bonds to Chemical Reagents
• Effective Date: 01-Oct-2005
• Referred By: ASTM E866-23 - Standard Specification for Corrosion-Inhibiting Adhesive Primer for Aluminum Alloys to Be Adhesively Bonded in Honeycomb Shelter Panels
• Effective Date: 01-Oct-2005
• Referred By: ASTM E1555-20 - Standard Specification for Structural Paste Adhesive for Sandwich Panel Repair
• Effective Date: 01-Oct-2005
• Referred By: ASTM E1826-23 - Standard Specification for Low Volatile Organic Compound (VOC) Corrosion-Inhibiting Adhesive Primer for Aluminum Alloys to Be Adhesively Bonded in Honeycomb Shelter Panels
• Effective Date: 01-Oct-2005
• Referred By: ASTM D2557-98(2017) - Standard Test Method for Tensile-Shear Strength of Adhesives in the Subzero Temperature Range from −267.8 to −55°C (−450 to −67°F)
• Effective Date: 01-Oct-2005
• Referred By: ASTM D3164-03(2017) - Standard Test Method for Strength Properties of Adhesively Bonded Plastic Lap-Shear Sandwich Joints in Shear by Tension Loading
• Effective Date: 01-Oct-2005

Standards Content (Sample)

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:D1002–05
Standard Test Method for
Apparent Shear Strength of Single-Lap-Joint Adhesively
Bonded Metal Specimens by Tension Loading (Metal-to-
1
Metal)
This standard is issued under the fixed designation D1002; 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 by 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 that 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, relative
humidity, 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, method of applying pressure (pressure bag, press platens, etc.), heat-up rate, and the
temperature of the assembly when under pressure. It should be stated whether this temperature is that
of the bondline 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 on a standard single-lap-joint specimen and under specified
conditions of preparation and test.
1.1 This test method covers the determination of the appar-
1.2 The values stated in SI units are considered to be the
entshearstrengthsofadhesivesforbondingmetalswhentested
standard. The values given in parentheses are for information
only.
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
Bonding Adhesives.
Current edition approved Oct. 1, 2005. Published October 2005. Originally
approved in 1949. Last previous edition approved in 2001 as D1002 – 01. DOI:
10.1520/D1002-05.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D1002–05
1.3 This standard does not purport to address all of the 4.4 The apparent shear strength measured with a single-lap
safety concerns, if any, associated with its use. It is the specimen is not suitable for determining design-allowable
responsibility of the user of this standard to establish appro- stresses for designing structural joints that differ in any manner
priate safety and health practices and determine the applica- from the joints tested without thorough analysis and under-
bility of regulatory limitations prior to use. standing of the joint and adhesive behaviors.
4.5 Single-lap tests may be used for comparing and select-
2. Referenced Documents
ing adhesives or bonding processes for susceptibility to fatigue
2
2.1 ASTM Standards:
and environmental changes, but such comparisons must be
A109/A109M Specification for Steel, Strip, Carbon (0.25 made with great caution since different adhesives may respond
Maximum Percent), Cold-Rolled
differently in different joints. See Guide D4896 for further
A167 Specification for Stainless and Heat-Resisting discussion of the concepts relative to interpretation of
Chromium-Nickel Steel Plate, Sheet, and Strip
adhesive-bonded single-lap-joints.
B36/B36M Specification for Brass Plate, Sheet, Strip, And
5. Apparatus
Rolled Bar
B152/B152M Speci
...