Purpose

This procedure is used to measure properties like the elastic modulus, the stress and the strain properties of a material using either injection molded tensile bar specimens or thin sidewall specimens cut from container.

Description

The Instron is programmed to pull the specimen at a specific rate until the specimen breaks. Data is collect continuously during the test and Stress vs. Strain curves are generated from this information. These curves are then analyzed and information such as the elastic modulus, % strain at yield, % strain at break, stress at yield (psi) and stress at break (psi) are reported.