Study of elastic properties of porous alumina (Master thesis)

Τζούμας, Αλέξιος

This Master Thesis aims at recording and comparison of the behavior of ceramic alumina samples of various (six) porosity values through the observation and analysis of data obtained from the ultrasonic method, with the ultimate goal of the understanding of the elastic properties of alumina in a direct dependence on porosity. The first chapter of this thesis aims to present information on alumina, such as its properties, the methods of origin and manufacture, and a reference to technological ap-plications. It also presents the non-destructive testing techniques, analyze in detail the ultrasonic method and the theoretical background, the applications and the equipment. Finally, it describes the aim of the Thesis. The second chapter describes the materials, the experimental equipment and the procedure of the experiments carried out during the diploma thesis. The properties evaluated by the tests, the analytical data obtained with the ultraviolet method, as well as issues related to the correct understanding and the evaluation of the final results are thoroughly presented. In the third chapter, the results of the experiments are presented. The fourth chapter summarizes the conclusions of the Thesis and proposes topics for future re-search.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Πολυτεχνική Σχολή. Τμήμα Μηχανικών Επιστήμης Υλικών
Subject classification: Αλουμίνα
Keywords: Αλουμίνα (Al2O3),Πορώδης αλουμίνα,Μηχανικές ιδιότητες κεραμικών,Μη καταστροφικός έλεγχος,Υπέρηχοι,Εφαρμογές υπερήχων,Διάδοση υπερήχων,Πιεζοηλεκτρικός αισθητήρας,Λόγος Poisson,Μέτρο ελαστικότητας,Alumina (Al2O3),Porous alumina,Mechanical properties of ceramics,Non-destructive testing,Ultrasound,Ultrasound applications,Ultrasound propagation,Piezoelectric sen-sor,Poisson ratio,Modulus of elasticity
Appears in Collections:Διατριβές Μεταπτυχιακής Έρευνας (Masters)

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