Alternative method for determination of the brittle-ductile transition at low testing speeds
Material properties tested under standard testing conditions do not always reflect the load part’s reality. The determination of superimposed external influences on the material properties is usually only possible by using different test methods. For this reason, existing test procedures and evaluation methods are constantly being improved. With the help of the fracture mechanics method of the essential work of fracture and the ductility level based on load-displacement diagrams, a new and promising application for material qualification can be presented. The averaged ductility level can be used to detect the beginning of the upper shelf of the brittle-ductile transition from notched impact tests. This was successfully demonstrated using the example of differently conditioned PA6 and a PA6 blend.
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The Journal of Plastics Technology is a peer reviewed internet periodical published under the auspices of the Scientific Alliance of Polymer Technology (WAK)
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