The aim of the present study is to develop a test method suitable for modelling thermoforming processes and which provides an index that accurately characterises the thermoformability of a film or sheet at a given temperature and pressure. For this purpose, the elevated temperature pneumatic deformability test was considered to be the most suitable. During the test, the film is blown until it tears, which takes only a few seconds. We recorded blowing during the test, and used the images to determine the ascent (k) of the specimens and approach the estimated surface of the deformed specimens with a sphere.
Producing a Dissimilar Joint of Copper to Austenitic Stainless Steel by Ultrasonic Welding Examination of Glass-Fibre Reinforced Composite Dental Fillings Design and Implementation of a Vacuum Forming Machine Manufacture of a Home-Made Spot Welding Machine from Household Electronic Waste Characteristics of the Levels of Mechanisation in Arc Welding Design of an Experimental Injection Moulding Tool for Testing Microstructured Cavity Surfaces Manufacturing, Heat Treatment and Investigation of Foam-Filled Tubes Development of Pneumatic Deformability Test of Polylactic Acid Films Development of a Clamping Device for Tensile Testing of Intracranial Flow Diverter Stents Development of Graphite- and Graphene Reinforced Styrene-Butadiene Rubber