This test method provides a means of measuring the cleavage forces and energies required to fail adhesively bonded reinforced flat bonded specimens. It also offers a semi-quantitative observation of failure mode.

This test method has found application in screening structural adhesives for bonding reinforced plastics where simple lap shear testing has proven to be inadequate in distinguishing differences between adhesives.

It is important to note that the test method measures performance properties of the total bonded system (for example, reinforced plastic and adhesive) but will not yield fundamental properties of the adhesive alone.

1. Scope

1.1 This test method covers the determination of fracture strength in cleavage of adhesive bonds when tested on standard reinforced plastic specimens and under specified conditions of preparation and testing (Note 1).

Note 1—While this test method is intended for use in reinforced plastic applications, it may be used for measuring fracture properties of adhesives using other plastic adherends, provided consideration is given to the thickness and should be of equal rigidity to the plastic adherends.

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 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D618 Practice for Conditioning Plastics for Testing

D907 Terminology of Adhesives

D2093 Practice for Preparation of Surfaces of Plastics Prior to Adhesive Bonding

D5573 Practice for Classifying Failure Modes in Fiber-Reinforced-Plastic (FRP) Joints

E4 Practices for Force Verification of Testing Machines

Keywords

adhesive; cleavage; fiber-reinforced-plastic; wedge; Adhesive joints; Adhesive bonds; Adhesives; Cleavage testing; Failure end point--adhesives; Fracture testing--adhesive bonds; Joints (adhesives); Strength--adhesives;

ICS Code

ICS Number Code 83.180 (Adhesives)

Citing ASTM Standards

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