Lap Shear
|
|
ASTM D3163, D5868
A2LA Accredited
Click on the picture for a larger view
|
|
Scope:
Lap Shear determines the shear strength of adhesives for bonding materials. The test method is primarily comparative. The test is applicable for determining adhesive strengths, surface preparation parameters and adhesive environmental durability.
Test Procedure:
Two specimens are bonded together with adhesive and cured as specified. The test specimens are placed in the grips of an Instron universal testing machine and pulled at 1.3 mm/min (0.05 in/min) until failure. ASTM D5868 is specifically for fiber reinforced plastic, and specifies 13 mm/min (0.5 in/min).
Specimen size:
Two specimens, each 25.4 x 101.6 mm (1" x 4") are bonded together with adhesive so that the overlap is sufficient to provide failure in the adhesive, and not in the substrate. Typical overlaps are 12.7 mm and 25.4 mm (0.5" and 1"). Depending upon the adhesive manufacturer's recommendations, wires or glass beads can be used to control the adhesive thickness.
Data:
Maximum Load
Peak Stress
Type of failure (cohesive, adhesive, or substrate)
Equipment Used:
Instron Universal Testing Machine
|
|
Intertek PTL Overview |
|
|
Testing |
|
|
Quality |
|
|
Contact Us |
|
|
Services & Tech Info |
|
|
Industry Segments |
|
|
Industry Segments |
|
|
|
|
|
|
