Ο ΚΩΔΙΚΑΣ ΥΠΟΛΟΓΙΣΤΙΚΗΣ ΤΟΜΟΓΡΑΦΙΑΣ SNARK09: ΕΓΚΑΤΑΣΤΑΣΗ ΣΕ ΛΕΙΤΟΥΡΓΙΚΟ ΣΥΣΤΗΜΑ LINUX, ΣΥΝΟΠΤΙΚΗ ΠΑΡΟΥΣΙΑΣΗ ΚΑΙ ΑΡΧΙΚΗ ΑΞΙΟΛΟΓΗΣΗ ΓΙΑ ΜΗ ΚΑΤΑΣΤΡΕΠΤΙΚΟ ΕΛΕΓΧΟ ΥΛΙΚΩΝ

ΛΕΒΕΝΤΗΣ, ΣΩΚΡΑΤΗΣ; LEVENTIS, SOKRATIS

dc.contributor.author	ΛΕΒΕΝΤΗΣ, ΣΩΚΡΑΤΗΣ	el
dc.contributor.author	LEVENTIS, SOKRATIS	en
dc.date.accessioned	2017-09-08T07:37:51Z
dc.date.available	2017-09-08T07:37:51Z
dc.date.issued	2017-09-08
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/45556
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.6088
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/gr/	*
dc.subject	ΜΗ ΚΑΤΑΣΤΡΟΦΙΚΟΣ ΕΛΕΓΧΟΣ	el
dc.subject	ΒΙΟΜΗΧΑΝΙΚΗ ΡΑΔΙΟΓΡΑΦΙΑ	el
dc.subject	ΒΙΟΜΗΧΑΝΙΚΗ ΥΠΟΛΟΓΙΣΤΙΚΗ ΤΟΜΟΓΡΑΦΙΑ	el
dc.subject	ΚΩΔΙΚΑΣ ΤΟΜΟΓΡΑΦΙΑΣ SNARK09	el
dc.subject	ΕΙΚΟΝΑ QR ΚΩΔΙΚΑ	el
dc.subject	NON-DESTRUCTIVE TESTING	en
dc.subject	INDUSTRIAL RADIOGRAPHY	en
dc.subject	INDUSTRIAL COMPUTERIZED TOMOGRAPHY	en
dc.subject	SNARK09 TOMOGRAPHY CODE	en
dc.subject	QR CODE IMAGE	en
dc.title	Ο ΚΩΔΙΚΑΣ ΥΠΟΛΟΓΙΣΤΙΚΗΣ ΤΟΜΟΓΡΑΦΙΑΣ SNARK09: ΕΓΚΑΤΑΣΤΑΣΗ ΣΕ ΛΕΙΤΟΥΡΓΙΚΟ ΣΥΣΤΗΜΑ LINUX, ΣΥΝΟΠΤΙΚΗ ΠΑΡΟΥΣΙΑΣΗ ΚΑΙ ΑΡΧΙΚΗ ΑΞΙΟΛΟΓΗΣΗ ΓΙΑ ΜΗ ΚΑΤΑΣΤΡΕΠΤΙΚΟ ΕΛΕΓΧΟ ΥΛΙΚΩΝ	el
dc.contributor.department	Τομέας Πυρηνικής Τεχνολογίας, Σχολή Μηχανολόγων Μηχανικών ΕΜΠ	el
heal.type	masterThesis
heal.secondaryTitle	THE SNARK09 COMPUTERIZED TOMOGRAPHY CODE SYSTEM: INSTALLATION IN A LINUX OPERATING SYSTEM, SUMMARY PRESENTATION AND INITIAL EVALUATION FOR MATERIALS NON-DESTRUCTIVE TESTING	en
heal.classification	ΜΗΧΑΝΟΛΟΓΙΚΗ ΜΗΧΑΝΙΚΗ ΚΑΙ ΤΕΧΝΟΛΟΓΙΑ	el
heal.classification	MECHANICAL ENGINEERING AND TECHNOLOGY	en
heal.classificationURI	http://data.seab.gr/concepts/5c281cc25ddfbf0bf74fa43c945fa2adbe6bf2ea
heal.classificationURI	http://data.seab.gr/concepts/5c281cc25ddfbf0bf74fa43c945fa2adbe6bf2ea
heal.language	el
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2016-02-26
heal.abstract	The main tasks within the framework of this MSc Thesis may be summarized as it follows: (1) to review in summary the principles of computerized tomography as a non-destructive testing tool, including the basic tomography image reconstruction algorithms along with their associated mathematics. (2) to demonstrate the proper working installation of the freely available tomographic image reconstruction code system by the name of SNARK09 (3) to briefly explain the input files organization in relation to code SNARK09, the input and output Graphics User Interfaces and the expected results based on one of the generic prepared examples by the code creators. and finally, (4) to initially test the SNARK09 capabilities using a limited number of pattern input-images representing a cross section of a specimen built by two materials only. The following conclusions may be drawn: - With regard to the computerized tomography The method is widely implemented in non-interventional medical diagnosis. However, it can be also used for materials non-destructive testing. To this end specific tomographic systems for the industry are readily commercially available. One of the most important components of any tomographic system is the image reconstruction software. This software being certified mainly for medical, or very costly industrial (e.g. nuclear reactors) or even military purposes, is usually very expensive and proprietary. However, there exists freely available and open source software solutions. A well-acknowledged one is the SNARK09 code system. Others are, for example, several MATLAB implementations of image reconstruction algorithms or the ImageJ image processing collection of software written in Java. - With regard to the appropriate SNARK09 installation process SNARK09 can be appropriately installed on a LINUX Operating System of the DEBIAN distribution of 32bit. The LINUX Operating System can be physically installed or hosted in a virtual host under a different Operating System. Within this Thesis the DEBIAN Operating System was virtually hosted in an MS WINDOWS host. Some minor problems were encountered with the communication between the host system and the client virtual LINUX machine, which did not compromise the correct performance of the SNARK09 code system. Furthermore qt graphics libraries of version 4, had to be downgraded to qt libraries of version 3 to ensure proper operation of input and output GUIs. Finally: - With regard to the SNARK09 test results SNARK09 seems to be sufficiently capable to successfully reconstruct images based on projections of pattern input-images representing a cross section of a specimen built by two materials only. Tests were performed using only one selected reconstruction algorithm and frozen exposure geometry and settings. Successive input images used were in fact QR codes of controlled increasing complexity (more characters). The reconstructed images were qualitatively compared to the originals visually. Furthermore, a quantitative comparison was made possible by a MATLAB implementation of an RMS value calculation algorithm.	en
heal.advisorName	ΠΕΤΡΟΠΟΥΛΟΣ, ΝΙΚΟΛΑΟΣ	el
heal.advisorName	PETROPOULOS, NICK	en
heal.committeeMemberName	ΠΕΤΡΟΠΟΥΛΟΣ, ΝΙΚΟΛΑΟΣ	el
heal.committeeMemberName	PETROPOULOS, NICK	en
heal.committeeMemberName	ΒΑΔΑΛΟΥΚΑ, ΒΑΣΙΛΙΚΗ	el
heal.committeeMemberName	ΣΙΔΕΡΙΔΗΣ, ΑΙΜΙΛΙΟΣ	el
heal.academicPublisher	Σχολή Εφαρμοσμένων Μαθηματικών και Φυσικών Επιστημών	el
heal.academicPublisherID	ntua
heal.numberOfPages	140
heal.fullTextAvailability	true