ASTM-D4896 › Historical Revision Information
Standard Guide for Use of Adhesive-Bonded Single Lap-Joint Specimen Test Results
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Scope
1.1 This guide is directed toward the safe and appropriate use of strength values obtained from test methods using single-lap adhesive joint specimens.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 The discussion focuses on shear strength as measured with small thin-adherend, single-lap specimens. Many factors, however, apply to shear modulus, tensile strength, and tensile modulus measured by small laboratory specimens in general. This discussion is limited to single-lap specimens and shear strength only for simplification.
Significance and Use
Single-lap specimens are economical, practical, and easy to make. They are the most widely used specimens for development, evaluation, and comparative studies involving adhesives and bonded products, including manufacturing quality control.
Special specimens and test methods have been developed that yield accurate estimates of the true shear strength of adhesives. These methods eliminate or minimize many of the deficiencies of the thin-adherend single-lap specimens, but are more difficult to make and test. (See Test Methods D 3983
The misuse of strength values obtained from such Test Methods or Practices as D 906
Keywords
shear strength; single-lap joint; tension loading; Cleavage testing; Design stresses; Edge flaws; Environmental control/fate; Joints (adhesives); Permeability; Single lap-joint adhesive specimen; Thick/thin adherend; Volumetric measurement; Bond strength--adhesives; Degradation--adhesives; Moisture analysis--adhesives; Peel strength tests--adhesives; Shear testing--adhesives; Strain testing--adhesives; Strength--adhesives; Stress--adhesives; Temperature tests--adhesives; Adherence; Adhesive bonds; Adhesives; ICS Number Code 83.180 (Adhesives)
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Document Number
ASTM-D4896-01(2008)e1
Revision Level
2001 R08(E1) EDITION
Status
Superseded
Modification Type
Reapproval with Ed Change
Publication Date
April 1, 2008
Document Type
Guide
Page Count
6 pages
Committee Number
D14.80