Σχεδιασμός επιφανειακών κυματοειδών διαμορφώσεων για την αύξηση του συντελεστή τριβής σε δίσκους φρένων και επαλήθευση μέσω υπολογιστικών και πειραματικών μεθόδων

Νούσης, Φαίδων Μιχαήλ; Nousis, Faidon Michail

dc.contributor.author	Νούσης, Φαίδων Μιχαήλ	el
dc.contributor.author	Nousis, Faidon Michail	el
dc.date.accessioned	2024-05-21T10:47:06Z
dc.date.available	2024-05-21T10:47:06Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/59427
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.27123
dc.rights	Default License
dc.subject	Braking system, disc brake, tribology, surface topology, macroscale features	en
dc.subject	Σύστημα φρένων, δισκόφρενο, τριβολογία, επιφανιακή τοπολογία, διαμορφώσεις επιφανείας	el
dc.title	Σχεδιασμός επιφανειακών κυματοειδών διαμορφώσεων για την αύξηση του συντελεστή τριβής σε δίσκους φρένων και επαλήθευση μέσω υπολογιστικών και πειραματικών μεθόδων	el
dc.title	Design of Meso-Scale Wave Surface Features to Increase the Friction Coefficient in the Brake Applications and Validation Using Numerical and Experimental Methods	en
heal.type	bachelorThesis
heal.classification	Μηχανολογία	el
heal.classification	Mechanical engineering	en
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2023-09
heal.abstract	An investigation into the improvement of frictional properties in braking systems by altering disc surface topology without altering geometrical volume and materials of the examined system is carried out in this thesis. The ultimate goal is proving the prescribed concept and enable motorsport applications to design systems more efficient than ever. FEA in ANSYS Mechanical is used to export initial conclusions for an equivalent simplistic model of the pad to disc contact. Actual material properties are used to simulate the difference in relative stiffness between bodies and conclude to accurate results. Findings using the model are assessed, and data acquired are indicative of the expected behavior for each design, after convergence is secured. An attempt is made to validate FEA results in the physical world using an existing high quality tribometer and different 3D printed specimens. The quantization of the features due to printing layer size is crucial, as it influences final outcome and surface quality. Post processing of the surfaces was carried out before experiments, and measurements of the physical objects were taken using an optical profilometer to observe the surface topography of the features and the manufacturing method. Specimens were tested across a range of speeds and radiuses of pin contact, and data received were processed using a custom MATLAB tool. Results of both the FEA modeling and the physical testing are presented and preliminary conclusions are drawn regarding the proof of concept, subject to future research validation. Finally, a custom disc-on disc tribometer is designed using low-cost innovative elements. The device can be used to simulate an accurate frictional contact in braking system, while its design is efficient, lightweight and reliable.	en
heal.advisorName	Σπιτάς, Βασίλειος	el
heal.committeeMemberName	Πολύδωρας, Σταμάτιος	el
heal.committeeMemberName	Προβατίδης, Χριστόφορος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Μηχανολόγων Μηχανικών. Τομέας Μηχανολογικών Κατασκευών και Αυτομάτου Ελέγχου	el
heal.academicPublisherID	ntua
heal.numberOfPages	122 σ.	el
heal.fullTextAvailability	false