ASTM D6272

Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending

ASTM D3164

Standard Test Method for Strength Properties of Adhesively Bonded Plastic lap-Shear Sandwich Joints in Shear by Tension Loading

ASTM D1894

Standard Test Method for Static and Kinetic Coefficients of Friction of Plastic Film and Sheeting

ASTM D790

Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating materials

Scope:
These methods are for specimens either injection molded, or cut from molded or extruded sheets, plates, or shapes.  The specimen rests on two supports and is loaded vertically down between the supports.  This method is used to determine the flexural properties of plastics and is applicable to both rigid and semi-rigid materials.

Procedure:
After material is conditioned and machined to the appropriate geometry, the specimen is placed on the two outer supports that have been set to a designated span apart.  Once the desired dimensional criteria is input into the software, the machine places a load in between the two supports to flex the specimen until rupture.

Data:
Flexural modulus, flexural strain, flexural stress, flexural strength

Equipment used:
Test frame, custom flexural test fixture, test method software

ASTM D3763

ASTM D3763 Standard Test Method for High speed Puncture Properties of Plastics Using Load and Displacement Sensors

Scope:Â
This test utilizes an impact head and load cell to simulate an impact at high speeds.

Procedure:
A deflection curve is produced by the impact of a cross head released from height, impacting the sample at a specified speed.  Various properties and graphical analysis can be completed with this test.

Data:
Toughness, maximum force, and energy at maximum force

Equipment Used:
Impact tester and specimen fixture