ISO 179-2 defines the method used to determine the resistance of plastic to breaking when impacted in a three point bend configuration, using a pendulum system with an appropriately sized, instrumented hammer arm. This test is used to characterize the materials behaviour under impact conditions. To this end, the instrumented hammer and Data Acquisition System collect relevant data in order to plot the force-deflection or force-time curve for the duration of the test. Different test parameters are specified according to the type of material that the specimen is made of as well as the type of notch cut in it. While similar to ASTM D6110 (Charpy Impact Resistance of Notched Plastic Specimens), the defined tests are significantly different and are not interchangeable.
To meet the requirements of the standard we recommend our CEAST 9050 Pendulum in either a manual or motorized version, along with a specimen support, properly sized shoulders, impact hammers, DAS (Data Acquisition System) and Visual Impact software. To get a full understanding of how the material will react to impact when exposed to sub-ambient temperatures, we recommend the inclusion of our Cryo Dispenser.
For specimen preparation we suggest the use of either our Motorized Notchvis or Automatic Notchvis, which together with the correct knife will allow the user to notch their samples correctly, according to the test standard.
To fully understand the test set-up, procedure, results and specimen preparation requirements, please refer to the standard that is available from the link below.