BME2100 Materials ! Polymers Lab A-Flexural Testing of a Polymer Specimen Objective: To measure the flexural stiffness and strength of a plastic/polymer specimen Equipment: Instron Model 4467 Universal Testing Machine; 3-point bending fixture; Vernier callipers Specimen dimensions: Width (mm): Length (mm): 11.96 69.39 2.06 Thickness [mm]: Material: Machine span: Standard: Polypropylene 32 mm ASTM-D790 Flexural properties of un-reinforced and reinforced plastics Test Procedure: Span = 32mm Attach 3-point bending fixture to the Instron testing machine Measure the dimensions of the specimen Crosshead Speed: 2 mm/min Esctension 10mm Report (specific requirements): Please use the general report content described at the beginning of this document. For each test, also include experiment-specific content: Results Plot stress-strain curve Determine flexure Modulus, E, by graphical means (slope of stress vs. strain curve) Determine flexural yield strength, oy, by graphical means 6 convert to sleess e Stran find slope od Line find the stagth e BME2100 Materials ! Polymers Lab A-Flexural Testing of a Polymer Specimen Objective: To measure the flexural stiffness and strength of a plastic/polymer specimen Equipment: Instron Model 4467 Universal Testing Machine; 3-point bending fixture; Vernier callipers Specimen dimensions: Width (mm): Length (mm): 11.96 69.39 2.06 Thickness [mm]: Material: Machine span: Standard: Polypropylene 32 mm ASTM-D790 Flexural properties of un-reinforced and reinforced plastics Test Procedure: Span = 32mm Attach 3-point bending fixture to the Instron testing machine Measure the dimensions of the specimen Crosshead Speed: 2 mm/min Esctension 10mm Report (specific requirements): Please use the general report content described at the beginning of this document. For each test, also include experiment-specific content: Results Plot stress-strain curve Determine flexure Modulus, E, by graphical means (slope of stress vs. strain curve) Determine flexural yield strength, oy, by graphical means 6 convert to sleess e Stran find slope od Line find the stagth e