Product description

ASTM C961 – Standard Test Method for Lap Shear Strength of Sealants

 

This test method measures the cohesive strength of sealants when subjected to shear stresses, and also provides information regarding the adhesive bond to

the substrates being tested.

The sealant is placed between two glass substrates.

The sample is placed in a tensile tester and pulled at a constant rate to failure.

The maximum shear force and mode of failure is noted. Maximum shear stress is calculated and reported.