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Strength Properties of Adhesively Bonded Plastic Lap-Shear Sandwich Joints in Shear by Tension Loading ASTM D3164 / D3164M

 
ASTM D3164 / D3164M


 
Strength Properties of Adhesively Bonded Plastic Lap-Shear Sandwich Joints in Shear by Tension Loading

Scope:
Test method ASTM D3164 is used to produce shear strength data for joints. ASTM D3164 is useful for comparing adhesives or evaluation surface treatments.

There are a variety of ASTM single-lap-joint shear tests including ASTM D1002 which specifies lap shear for metal to metal, ASTM D3163 for plastics joints, and ASTM D5868 for fiber reinforced plastics (FRP) against itself or metal.

Test Procedure:
The test specimens are placed in the grips of a universal testing machine and pulled until rupture. The grips used to secure the ends of the assembly must align so that the applied force is applied through the centerline of the specimen. The type of failure can be either adhesive (the adhesive separates from one of the substrates), cohesive (the adhesive ruptures within itself) or a break in one of the substrates.

Specimen size:
The recommended lap shear specimen is 25.4 mm (1) wide, with an overlap of 12.7 mm (0.5). The recommended metal thickness is 1.62 mm (0.064) and the overall length of the bonded specimen should be 177.8 mm (7). The recommended thickness of the plastic insert is 0.354 mm (0.010) or less.

Data:
Ultimate Strength (MPa or PSI)
Type of failure (cohesive, adhesive, substrate)

Equipment Used:
Universal Testing Machine
Air recirculation oven for curing adhesives


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**Please note that this test description is intentionally generic in nature and aimed at providing a descriptive summary to enhance test understanding. For more information please contact a Intertek PTL Technical Representative at . Due to copyright restrictions, we are not able to provide copies of standards. Standards can be obtained from appropriate standards authorities.

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