ASTM D4027-98(2019)
Standard Test Method for Measuring Shear Properties of Structural Adhesives by the Modified-Rail Test

Standard No.

ASTM D4027-98(2019)

Release Date

2019

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D4027-98(2019)

Scope

1.1 This test method describes equipment and procedures to measure the shear modulus and shear strength of adhesive layers between rigid adherends. The equipment may also be used for determining the adhesive’s shear creep compliance, the effects of strain history such as cyclic loading upon shear properties, and a failure criteria for biaxial stress conditions such as shear plus tension and shear plus compression.2 1.2 High-density wood shall be the preferred substrate. The practical upper limit on the shear modulus that can be measured is determined by the shear modulus of the adherends and by the strain measuring device. Thus, the practical limit of adhesive shear modulus that can be measured using highdensity wood adherends is about 690 MPa (1 × 105 psi). NOTE 1—Wood-base composites, metal, plastic, reinforced plastics, and other common construction materials may also be used for adherends. 1.3 The range of specimen dimensions that can be tested are: width 1.59 to 12.70 mm (0.0625 to 0.500 in.), length 102 to 203 mm (4 to 8 in.), and adherend thickness 13 to 25 mm (0.50 to 1.00 in.). The standard specimen dimensions shall be: width 3.18 mm (0.125 in.), length 203 mm (8 in.), and adherend thickness 19 mm (0.75 in.). Bondline thicknesses from 0.15 to 3.18 mm (0.006 to 0.125 in.) may be tested. 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D4027-98(2019) Referenced Document

• ASTM D4442 Standard Test Methods for Direct Moisture Content Measurement of Wood and Wood-Base Materials
• ASTM D905 Standard Test Method for Strength Properties of Adhesive Bonds in Shear by Compression Loading
• ASTM D907 Standard Terminology of Adhesives*， 2023-05-16 Update
• ASTM E229 Standard Test Method for Shear Strength and Shear Modulus of Structural Adhesives (Withdrawn 2003)
• ASTM E83 Standard Practice for Verification and Classification of Extensometer

ASTM D4027-98(2019) history

• 2019 ASTM D4027-98(2019) Standard Test Method for Measuring Shear Properties of Structural Adhesives by the Modified-Rail Test
• 1998 ASTM D4027-98(2011) Standard Test Method for Measuring Shear Properties of Structural Adhesives by the Modified-Rail Test
• 1998 ASTM D4027-98(2004) Standard Test Method for Measuring Shear Properties of Structural Adhesives by the Modified-Rail Test
• 1998 ASTM D4027-98 Standard Test Method for Measuring Shear Properties of Structural Adhesives by the Modified-Rail Test