Measurement at low strain rates of the elastic properties of dental polymeric materials

摘要

Objective: To evaluate a simple static test (i.e. a slow strain rate test) designed to measure Young's modulus and the bulk modulus of polymeric materials (The NOL Test). Though it is a 'mature' test as yet it has never been applied to dental materials. Methods: A small cylindrical specimen is contained in a close-fitting steel constraining ring and compressive force applied the ends by Steel pistons.