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ASTM D1002 Lap Shear Testing for Adhesively Bonded Metals

Many turn to international testing standards such as ASTM D1002 to determine the strength of their adhesively bonded metal materials. This test method can be used on single-lap-joint specimens and used to determine adhesive strength, surface preparation parameters and adhesive environmental durability.

ASTM D1002

For ASTM D1002, use a lap shear specimen measured at 25.4 mm (1 in) wide, with an overlap of 12.7 mm (0.5 in). Metal thickness should be 1.62 mm (0.064 in) and the entire length of the bonded specimen should be 177.8 mm (7 in). Using this test method, you will be able to determine maximum force, maximum shear stress and whether the type of failure is adhesive or cohesive.

Testing procedure

Use a TestResources Electromechanical Universal Test Machine to lap shear test your metal sample. 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.

Equipment required

A TestResources Electromechanical Test Machine is best for testing bonded metals with strong wedge grips to hold your specimen in place. 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.

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