Lap Shear Testing Services Lab
LAP SHEAR TESTING OF ADHESIVE PROPERTIES OF POLYMER, COMPOSITE MATERIALS
Lap shear testing measures the actual distribution of stress in shear test joints. The stress directions can be multi-axial and non-uniform, varying with position in the bond line, and depends on factors such as the bond layer thickness, adherend thickness, size and shape of fillets, and mechanical properties (stiffness) of the adhesive and adherends.
The purpose of the lap shear test is to assess adhesive properties or bond quality. Testing is conducted using standard tension/compression mechanical test equipment with self-aligning (manual or servo hydraulic wedge-action) grips to hold the specimen.
Lap shear strength testing measures the ability of a material to withstand stresses set in a plane, where the exerted shear force is moving the two substrates in opposite directions. It is one of the most common stresses that a bonded joint can face during service, especially in structural bonding applications. The lap shear strength of an adhesive serves as one of the indicators for its long term sustenance in an application.
To discover more about IMR's lap shear testing capabilities, click here to request a quote, or click the button below.
POLYMER CHARACTERIZATION SERVICES
Brookfield Rotational Viscosity
Coefficient of Expansion
Coefficient of Friction
Compressive Properties (-240ºF to 660ºF)
Dynamic Mechanical Analysis (DMA)
Flammability (UL94, FMVSS 302, ISO 3795, SAE J369, ASTM D5132)
Flexural Properties (-240ºF to 660ºF)
Gloss (ASTM D523, D4039)
Hardness Testing (Barcol, Durometer/Shore)
Heat Deflection by TMA (E2092)
Lap Shear Testing
Melt Flow Rate/Index
RELATED SHEAR TESTING METHODS
Single Lap Shear
Double Lap Shear
Thick adherend shear