caa a22 4500 60617284X CHVBK 20210128100730.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s10921-015-0302-z doi (NATIONALLICENCE)springer-10.1007/s10921-015-0302-z Porosity Characterization of Aluminium Castings by Using Particular Non-destructive Techniques [Elektronische Daten] [Aneta Wilczek, Piotr Długosz, Marek Hebda] In this paper is presented an analysis of a comparison of particular non-destructive techniques: radiographic, ultrasonic, eddy current and pulsed infrared thermography to detect flaws in pressure die casting. Furthermore, a new way of the image segmentation method for porosity detection in aluminium pressure die casting using results from X-ray analysis and public domain software is proposed. The results of the research allowed verifying the possibility of using the aforesaid methods in controlled technological parameters of the casting process, and thus permitted confirming the quality of the manufactured castings. It was found that the radiographic method was the most preferred means for evaluating the quality of products and for optimizing the technological process for aluminium pressure casting. It permits a fast analysis of casting defects in the finished products, and when combined with the computer image analysis (the porosity segmentation algorithm as described in the article) it allows drawing conclusions regarding their causes (e.g. based on the size and shape analysis of the pores detected). The ultrasonic testing method can also be used to evaluate the quality of the casting (to detect it but without the possibility of interpreting the size or source of origin). The results obtained via this method allow for proper control of die casting parameters. The Author(s), 2015 Non-destructive testing nationallicence Aluminium casting nationallicence Porosity segmentation algorithm nationallicence X-ray method nationallicence Ultrasonic method nationallicence Wilczek Aneta Limatherm S.A., Tarnowska 1, 34-600, Limanowa, Poland aut Długosz Piotr Foundry Research Institute, Zakopiańska 73, 30-418, Kraków, Poland aut Hebda Marek Institute of Materials Engineering, Cracow University of Technology, Warszawska 24, 31-155, Kraków, Poland aut Journal of Nondestructive Evaluation Springer US; http://www.springer-ny.com 34/3(2015-09-01), 1-7 0195-9298 34:3<1 2015 34 10921 https://doi.org/10.1007/s10921-015-0302-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10921-015-0302-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wilczek Aneta Limatherm S.A., Tarnowska 1, 34-600, Limanowa, Poland aut NATIONALLICENCE 700 1- Długosz Piotr Foundry Research Institute, Zakopiańska 73, 30-418, Kraków, Poland aut NATIONALLICENCE 700 1- Hebda Marek Institute of Materials Engineering, Cracow University of Technology, Warszawska 24, 31-155, Kraków, Poland aut NATIONALLICENCE 773 0- Journal of Nondestructive Evaluation Springer US; http://www.springer-ny.com 34/3(2015-09-01), 1-7 0195-9298 34:3<1 2015 34 10921