scope:

This International Standard specifies a method for the determination of impact properties of rigid plastic materials in the form of disks or square pieces of standard dimensions, moulded directly or cut from sheets. This falling dart method is used for the assessment of plastic sheeting or mouldings under an impact stress applied at right angles to the plane of the sheet. Part 1 of this International Standard can be used if it is sufficient to characterize the impact behaviour of plastics by an impact-failure energy. If recording of the force-deformation curve is necessary, Part 2 shall be used. Two methods of test are described.