ASTM D1002 is commonly used as a guideline for testing the strength of adhesives to bond metals. This testing standard can be used on single-lap-joint specimens and can be used to determine adhesive strength, surface preparation parameters and adhesive environmental durability.
ASTM D1002
ASTM D1002 recommends that the lap shear specimen is 25.4 mm (1”) wide, with an overlap of 12.7 mm (0.5”). Metal thickness should be 1.62 mm (0.064”) and the entire length of the bonded specimen should be 177.8 mm (7”). ASTM D1002 requires testing for the following measurements:
- Maximum force
- Maximum shear stress
- Type of failure (adhesive or cohesive)
- Testing procedure
An electromechanical universal testing machine can be used to conduct a lap shear test. First, load each end of the specimen into the test machine grips and apply a force at a controlled rate of 1,200 to 1,400 psi/min and at a cross head control rate of 1.3 mm/min (0.05 in/min) until you reach a breaking point. Record the maximum force applied.
The right testing machine and grips are important to consider due to the fact that the grips must align so that the applied force is sent through the centerline of the specimen. By means of our adhesive testing expertise and modular product design, we will help find the testing solution that is right for you. Give one of our application engineers a call today for help with creating the best budget and testing plan according to ASTM D1002.
Recommended Test Machine
Forces up to 10 kN (2,250 lbf)
Low force tabletop systems
Modular series of five frame options with adjustable test space
Affordable testing option for tension, compression, bend, peel and much more
Force range of 5 kN to 600 kN (1,125 lbf to 135,000 lbf)
Adjustable test space
The most popular choice for static tension and compression tests
These dual column testers are available in both tabletop and floor standing models
Recommended Testing Accessories
Rated to 1 kN (225 lbf)
Maximum specimen thicknesses from 10 mm to 50 mm (0.39 in. to 2.0 in.)
Simple design can be used for a multitude of tensile applications
Inexpensive and reliable
Load ratings of 20 kN and 50 kN (4,500 lbf and 11,250 lbf)
Maximum specimen thickness of 16 mm (0.63 in)
Self-tightening design resists slippage of the specimen
Fast and easy specimen setup
Rated to 5 kN (1,125 lbf)
Works well with flat or round specimens
Maximum specimen thickness / diameter of 10 mm (0.4 in)
