Testing

The impact strength test is used to evaluate the impact resistance of a material or judge the brittleness and toughness of the material, so the impact strength is also called impact toughness. The impact strength is the ratio of the energy absorbed by the sample during the impact failure process to the original cross-sectional area.

Classification of measurement methods: There are many methods to test the impact strength of engineering plastics, mainly including the pendulum impact test method and the falling weight impact test method. The pendulum impact test is divided into the simply supported beam method (Charpy method) and the cantilever beam method (Izod method).

Test Standard:

Simply supported beam method:

GB/T 1043.1-2008 (ISO 179:2010) plastics. Determination of impact properties of simply supported beams. Part 1: Non-instrumental impact test; ASTM D6110-2018 Simply supported beam impact strength test.

Cantilever beam method:

GB/T 1843-2008 (ISO 180-2000/Amd 2-2013) Determination of impact strength of plastic cantilever beams; ASTM D256-2010 (2018) Standard test method for plastic cantilever pendulum。