{"id":{"repo_id":"greece","oai_identifier":"oai:10442/1525"},"canonical_url":"https://search.dev.ndltd.org/etd/greece/oai:10442/1525","repository":{"repo_id":"greece","name":"Greek National Archive of PhD Theses","base_url":"https://phdtheses.ekt.gr/eadd_oai/request"},"display":{"title":"ΑΞΙΟΛΟΓΗΣΗ ΤΟΥ ΟΡΙΟΥ ΖΩΗΣ ΣΕ ΚΟΠΩΣΗ ΑΕΡΟΠΟΡΙΚΩΝ ΣΥΝΘΕΤΩΝ ΥΛΙΚΩΝ ΜΕ ΤΗ ΜΕΘΟΔΟ ΤΗΣ ΑΚΟΥΣΤΙΚΗΣ ΕΚΠΟΜΠΗΣ","abstract":"DUE TO GROWING INTEREST OF COMPOSITE MATERIALS IN A/C MANUFACTURING THE DEVOLPEMENT OF PREDICTIVE METHODS FOR LIFING STRUCTURAL COMPONENTS IS CONSIDERED OF CARDINAL IMPORTANCE. THE PREVIOUS PHILOSOPHY OF A/C DESIGN \"SAFE LIFE\" HAS BEEN REPLACED BY ANOTHER DESIGN CONCEPT \"DAMAGE TOLERANCE\". WITHIN THE OVERALL CONCEPT OF \"DAMAGE TOLERANT\" PRODUCTS \"NDE\" AND ACOUSTIC EMISSION METHOD PLAY SIGNIFICANT ROLES TO THE DEVELOPMENT OF TECHNIQUES FOR ASSESSING DAMAGE ACCUMULATION AND MONITORING DIFFERENT FAILURE MODES. SEVERAL ATTEMPTS HAVE BEEN MADE TO STUDYDAMAGE ACCUMULATION ON THE BASIS OF MINER'S RULE, BUT IT WAS FOUND THAT THE PREDICTED LINEAR DAMAGE RULE LIVES UP TO THREE TIMES THOSE ACTUALLY MEASURED. IN THE PRESENT WORK DIFFERENT TYPES OF STRUCTURAL COMPOSITES (CFRTL) AND (G.E.R. THERMOPLASTICS) WERE MONITORED BY ACOUSTIC EMISSION. MODELS BASED ON THE ACOUSTIC EMISSION ENERGY RATE [E] WERE DEVELOPED TO PREDICT THE BEHAVIOURAL AND THE RESIDUAL LIFE OF THE MATERIAL UNDER DIFFERENT STRESS LEVELS.","abstract_html":"DUE TO GROWING INTEREST OF COMPOSITE MATERIALS IN A/C MANUFACTURING THE DEVOLPEMENT OF PREDICTIVE METHODS FOR LIFING STRUCTURAL COMPONENTS IS CONSIDERED OF CARDINAL IMPORTANCE. THE PREVIOUS PHILOSOPHY OF A/C DESIGN "SAFE LIFE" HAS BEEN REPLACED BY ANOTHER DESIGN CONCEPT "DAMAGE TOLERANCE". WITHIN THE OVERALL CONCEPT OF "DAMAGE TOLERANT" PRODUCTS "NDE" AND ACOUSTIC EMISSION METHOD PLAY SIGNIFICANT ROLES TO THE DEVELOPMENT OF TECHNIQUES FOR ASSESSING DAMAGE ACCUMULATION AND MONITORING DIFFERENT FAILURE MODES. SEVERAL ATTEMPTS HAVE BEEN MADE TO STUDYDAMAGE ACCUMULATION ON THE BASIS OF MINER'S RULE, BUT IT WAS FOUND THAT THE PREDICTED LINEAR DAMAGE RULE LIVES UP TO THREE TIMES THOSE ACTUALLY MEASURED. IN THE PRESENT WORK DIFFERENT TYPES OF STRUCTURAL COMPOSITES (CFRTL) AND (G.E.R. THERMOPLASTICS) WERE MONITORED BY ACOUSTIC EMISSION. MODELS BASED ON THE ACOUSTIC EMISSION ENERGY RATE [E] WERE DEVELOPED TO PREDICT THE BEHAVIOURAL AND THE RESIDUAL LIFE OF THE MATERIAL UNDER DIFFERENT STRESS LEVELS.","abstract_has_math":false,"creators":["Μαριόλη-Ρήγα, Ζαΐρα"],"institution":"Πανεπιστήμιο Πατρών","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1990,"date_issued":"1990","date_published":"1990","updated_at":"2026-07-24T02:24:59Z","subjects":["Acoustic emission","COMPOSITE MATERIALS AND A/C STRUCTURES","FATIGUE BEHAVIOUR OF COMPOSITE MATERIALS","FATIGUE LIFE PREDICTION","LIFE PREDICTION MODELS","Ακουστική εκπομπή","Κόπωση σύνθετων υλικών","ΜΟΝΤΕΛΑ ΠΡΟΓΝΩΣΗΣ ΥΠΟΛΕΙΠΟΜΕΝΩΝ ΚΥΚΛΩΝ ΖΩΗΣ","ΠΡΟΓΝΩΣΗ ΟΡΙΟΥ ΖΩΗΣ","ΣΥΝΘΕΤΑ ΥΛΙΚΑ (ΑΕΡΟΠΟΡΙΚΩΝ ΚΑΤΑΣΚΕΥΩΝ)","Engineering and Technology","Mechanical Engineering","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Μηχανολόγου Μηχανικού"],"languages":["gre"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1525"],"render_values":[{"text":"10.12681/eadd/1525","href":"https://doi.org/10.12681/eadd/1525","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10442/hedi/1525","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Μαριόλη-Ρήγα, Ζαΐρα"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1990"]},{"key":"dc:publisher","label":"Institution","values":["Πανεπιστήμιο Πατρών","University of Patras"]},{"key":"dc:type","label":"Dc Type","values":["PhD Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Acoustic emission","COMPOSITE MATERIALS AND A/C STRUCTURES","FATIGUE BEHAVIOUR OF COMPOSITE MATERIALS","FATIGUE LIFE PREDICTION","LIFE PREDICTION MODELS","Ακουστική εκπομπή","Κόπωση σύνθετων υλικών","ΜΟΝΤΕΛΑ ΠΡΟΓΝΩΣΗΣ ΥΠΟΛΕΙΠΟΜΕΝΩΝ ΚΥΚΛΩΝ ΖΩΗΣ","ΠΡΟΓΝΩΣΗ ΟΡΙΟΥ ΖΩΗΣ","ΣΥΝΘΕΤΑ ΥΛΙΚΑ (ΑΕΡΟΠΟΡΙΚΩΝ ΚΑΤΑΣΚΕΥΩΝ)","Engineering and Technology","Mechanical Engineering","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Μηχανολόγου Μηχανικού"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["gre"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1525","http://hdl.handle.net/10442/hedi/1525"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["DUE TO GROWING INTEREST OF COMPOSITE MATERIALS IN A/C MANUFACTURING THE DEVOLPEMENT OF PREDICTIVE METHODS FOR LIFING STRUCTURAL COMPONENTS IS CONSIDERED OF CARDINAL IMPORTANCE. THE PREVIOUS PHILOSOPHY OF A/C DESIGN \"SAFE LIFE\" HAS BEEN REPLACED BY ANOTHER DESIGN CONCEPT \"DAMAGE TOLERANCE\". WITHIN THE OVERALL CONCEPT OF \"DAMAGE TOLERANT\" PRODUCTS \"NDE\" AND ACOUSTIC EMISSION METHOD PLAY SIGNIFICANT ROLES TO THE DEVELOPMENT OF TECHNIQUES FOR ASSESSING DAMAGE ACCUMULATION AND MONITORING DIFFERENT FAILURE MODES. SEVERAL ATTEMPTS HAVE BEEN MADE TO STUDYDAMAGE ACCUMULATION ON THE BASIS OF MINER'S RULE, BUT IT WAS FOUND THAT THE PREDICTED LINEAR DAMAGE RULE LIVES UP TO THREE TIMES THOSE ACTUALLY MEASURED. IN THE PRESENT WORK DIFFERENT TYPES OF STRUCTURAL COMPOSITES (CFRTL) AND (G.E.R. THERMOPLASTICS) WERE MONITORED BY ACOUSTIC EMISSION. MODELS BASED ON THE ACOUSTIC EMISSION ENERGY RATE [E] WERE DEVELOPED TO PREDICT THE BEHAVIOURAL AND THE RESIDUAL LIFE OF THE MATERIAL UNDER DIFFERENT STRESS LEVELS.","Η ΕΙΣΑΓΩΓΗ ΤΩΝ ΠΡΟΗΓΜΕΝΩΝ ΣΥΝΘΕΤΩΝ ΥΛΙΚΩΝ ΣΤΙΣ ΑΕΡΟΠΟΡΙΚΕΣ ΚΑΤΑΣΚΕΥΕΣ ΕΠΕΒΑΛΕ ΤΗΝ ΑΝΑΓΚΗ ΑΝΑΠΤΥΞΗΣ ΝΕΩΝ ΤΕΧΝΙΚΩΝ ΑΞΙΟΛΟΓΗΣΗΣ ΤΗΣ ΔΟΜΗΣ ΤΟΥΣ ΚΑΙ ΜΕΤΡΗΣΗΣ ΤΗΣ ΣΥΣΣΩΡΕΥΜΕΝΗΣ ΖΗΜΙΑΣ. Η ΑΚΟΥΣΤΙΚΗ ΕΚΠΟΜΠΗ ΩΣ ΜΕΘΟΔΟΣ ΜΗ ΚΑΤΑΣΤΡΟΦΙΚΗΣ ΑΞΙΟΛΟΓΗΣΗΣ ΦΑΙΝΕΤΑΙ ΝΑ ΠΑΡΟΥΣΙΑΖΕΙ ΑΞΙΟΣΗΜΕΙΩΤΑ ΠΛΕΟΝΕΚΤΗΜΑΤΑ Σ'ΑΥΤΟΝ ΤΟΝ ΤΟΜΕΑ ΛΟΓΩ ΤΗΣΔΥΝΑΤΟΤΗΤΑΣ ΤΗΣ ΝΑ ΠΑΡΕΧΕΙ ΣΥΝΕΧΕΙΣ ΠΛΗΡΟΦΟΡΙΕΣ ΓΙΑ ΤΗΝ ΔΟΜΙΚΗ ΚΑΤΑΣΤΑΣΗ ΤΟΥ ΥΛΙΚΟΥ ΚΑΘΕ ΣΤΙΓΜΗ ΚΑΤΑ ΤΗ ΔΙΑΡΚΕΙΑ ΤΗΣ ΛΕΙΤΟΥΡΓΙΚΗΣ ΤΟΥ ΖΩΗΣ. ΠΟΛΛΕΣ ΠΡΟΣΠΑΘΕΙΕΣ ΕΧΟΥΝ ΓΙΝΕΙ ΓΙΑ ΤΗΝ ΜΕΛΕΤΗ ΤΗΣ ΣΥΣΣΩΡΕΥΣΗΣ ΤΗΣ ΖΗΜΙΑΣ ΚΑΙ ΥΠΟΛΟΓΙΣΜΟ ΤΟΥ ΥΠΟΛΕΙΠΟΜΕΝΟΥ ΧΡΟΝΟΥ ΖΩΗΣ ΤΟΥ ΥΛΙΚΟΥ ΜΕ ΤΟΝ ΚΑΝΟΝΑ ΤΟΥ \"MINER\" EXEI ΑΠΟΔΕΙΧΘΗ ΟΜΩΣ ΟΤΙ ΑΥΤΗ Η ΠΡΟΣΕΓΓΙΣΗ ΤΟΥ ΠΡΟΒΛΗΜΑΤΟΣ ΔΙΔΕΙ ΑΠΟΤΕΛΕΣΜΑΤΑ ΔΙΑΦΟΡΕΤΙΚΑ ΕΚΕΙΝΩΝ ΠΟΥ ΣΤΗΝ ΠΡΑΓΜΑΤΙΚΟΤΗΤΑ ΜΕΤΡΩΝΤΑΙ ΣΤΗΝ ΠΑΡΟΥΣΑ ΕΡΓΑΣΙΑ ΔΙΑΦΟΡΕΤΙΚΟΙ ΤΥΠΟΙ ΣΥΝΘΕΤΩΝ ΑΕΡΟΠΟΡΙΚΩΝ ΥΛΙΚΩΝ, ΑΞΙΟΛΟΓΗΘΗΚΑΝ ΜΕ ΤΗΝ ΜΕΘΟΔΟ ΤΗΣ ΑΚΟΥΣΤΙΚΗΣ ΕΚΠΟΜΠΗΣ ΚΑΤΑ ΤΗΝ ΔΙΑΡΚΕΙΑ ΣΥΝΘΗΚΩΝ ΚΟΠΩΣΗΣ. ΣΤΗΝ ΣΥΝΕΧΕΙΑ ΑΝΑΠΤΥΧΘΗΚΑΝ ΜΟΝΤΕΛΑ ΠΡΟΓΝΩΣΗΣ ΤΟΥΟΡΙΟΥ ΖΩΗΣ ΤΟΥ ΥΛΙΚΟΥ ΓΙΑ ΔΙΑΦΟΡΕΤΙΚΕΣ ΣΥΝΘΗΚΕΣ ΔΥΝΑΜΙΚΗΣ ΚΑΤΑΠΟΝΗΣΗΣ, ΜΕ ΧΡΗΣΗ ΠΑΡΑΜΕΤΡΩΝ ΑΚΟΥΣΤΙΚΗΣ ΕΚΠΟΜΠΗΣ."]},{"key":"dc:title","label":"Title","values":["ΑΞΙΟΛΟΓΗΣΗ ΤΟΥ ΟΡΙΟΥ ΖΩΗΣ ΣΕ ΚΟΠΩΣΗ ΑΕΡΟΠΟΡΙΚΩΝ ΣΥΝΘΕΤΩΝ ΥΛΙΚΩΝ ΜΕ ΤΗ ΜΕΘΟΔΟ ΤΗΣ ΑΚΟΥΣΤΙΚΗΣ ΕΚΠΟΜΠΗΣ","FATIGUE LIFE EVALUATION OF A/C STRUCTURAL COMPOSITES BY ACOUSTIC EMISSION"]}]}],"canonical_facts":{"dc:creator":["Μαριόλη-Ρήγα, Ζαΐρα"],"dc:date":["1990"],"dc:description":["DUE TO GROWING INTEREST OF COMPOSITE MATERIALS IN A/C MANUFACTURING THE DEVOLPEMENT OF PREDICTIVE METHODS FOR LIFING STRUCTURAL COMPONENTS IS CONSIDERED OF CARDINAL IMPORTANCE. THE PREVIOUS PHILOSOPHY OF A/C DESIGN \"SAFE LIFE\" HAS BEEN REPLACED BY ANOTHER DESIGN CONCEPT \"DAMAGE TOLERANCE\". WITHIN THE OVERALL CONCEPT OF \"DAMAGE TOLERANT\" PRODUCTS \"NDE\" AND ACOUSTIC EMISSION METHOD PLAY SIGNIFICANT ROLES TO THE DEVELOPMENT OF TECHNIQUES FOR ASSESSING DAMAGE ACCUMULATION AND MONITORING DIFFERENT FAILURE MODES. SEVERAL ATTEMPTS HAVE BEEN MADE TO STUDYDAMAGE ACCUMULATION ON THE BASIS OF MINER'S RULE, BUT IT WAS FOUND THAT THE PREDICTED LINEAR DAMAGE RULE LIVES UP TO THREE TIMES THOSE ACTUALLY MEASURED. IN THE PRESENT WORK DIFFERENT TYPES OF STRUCTURAL COMPOSITES (CFRTL) AND (G.E.R. THERMOPLASTICS) WERE MONITORED BY ACOUSTIC EMISSION. MODELS BASED ON THE ACOUSTIC EMISSION ENERGY RATE [E] WERE DEVELOPED TO PREDICT THE BEHAVIOURAL AND THE RESIDUAL LIFE OF THE MATERIAL UNDER DIFFERENT STRESS LEVELS.","Η ΕΙΣΑΓΩΓΗ ΤΩΝ ΠΡΟΗΓΜΕΝΩΝ ΣΥΝΘΕΤΩΝ ΥΛΙΚΩΝ ΣΤΙΣ ΑΕΡΟΠΟΡΙΚΕΣ ΚΑΤΑΣΚΕΥΕΣ ΕΠΕΒΑΛΕ ΤΗΝ ΑΝΑΓΚΗ ΑΝΑΠΤΥΞΗΣ ΝΕΩΝ ΤΕΧΝΙΚΩΝ ΑΞΙΟΛΟΓΗΣΗΣ ΤΗΣ ΔΟΜΗΣ ΤΟΥΣ ΚΑΙ ΜΕΤΡΗΣΗΣ ΤΗΣ ΣΥΣΣΩΡΕΥΜΕΝΗΣ ΖΗΜΙΑΣ. Η ΑΚΟΥΣΤΙΚΗ ΕΚΠΟΜΠΗ ΩΣ ΜΕΘΟΔΟΣ ΜΗ ΚΑΤΑΣΤΡΟΦΙΚΗΣ ΑΞΙΟΛΟΓΗΣΗΣ ΦΑΙΝΕΤΑΙ ΝΑ ΠΑΡΟΥΣΙΑΖΕΙ ΑΞΙΟΣΗΜΕΙΩΤΑ ΠΛΕΟΝΕΚΤΗΜΑΤΑ Σ'ΑΥΤΟΝ ΤΟΝ ΤΟΜΕΑ ΛΟΓΩ ΤΗΣΔΥΝΑΤΟΤΗΤΑΣ ΤΗΣ ΝΑ ΠΑΡΕΧΕΙ ΣΥΝΕΧΕΙΣ ΠΛΗΡΟΦΟΡΙΕΣ ΓΙΑ ΤΗΝ ΔΟΜΙΚΗ ΚΑΤΑΣΤΑΣΗ ΤΟΥ ΥΛΙΚΟΥ ΚΑΘΕ ΣΤΙΓΜΗ ΚΑΤΑ ΤΗ ΔΙΑΡΚΕΙΑ ΤΗΣ ΛΕΙΤΟΥΡΓΙΚΗΣ ΤΟΥ ΖΩΗΣ. ΠΟΛΛΕΣ ΠΡΟΣΠΑΘΕΙΕΣ ΕΧΟΥΝ ΓΙΝΕΙ ΓΙΑ ΤΗΝ ΜΕΛΕΤΗ ΤΗΣ ΣΥΣΣΩΡΕΥΣΗΣ ΤΗΣ ΖΗΜΙΑΣ ΚΑΙ ΥΠΟΛΟΓΙΣΜΟ ΤΟΥ ΥΠΟΛΕΙΠΟΜΕΝΟΥ ΧΡΟΝΟΥ ΖΩΗΣ ΤΟΥ ΥΛΙΚΟΥ ΜΕ ΤΟΝ ΚΑΝΟΝΑ ΤΟΥ \"MINER\" EXEI ΑΠΟΔΕΙΧΘΗ ΟΜΩΣ ΟΤΙ ΑΥΤΗ Η ΠΡΟΣΕΓΓΙΣΗ ΤΟΥ ΠΡΟΒΛΗΜΑΤΟΣ ΔΙΔΕΙ ΑΠΟΤΕΛΕΣΜΑΤΑ ΔΙΑΦΟΡΕΤΙΚΑ ΕΚΕΙΝΩΝ ΠΟΥ ΣΤΗΝ ΠΡΑΓΜΑΤΙΚΟΤΗΤΑ ΜΕΤΡΩΝΤΑΙ ΣΤΗΝ ΠΑΡΟΥΣΑ ΕΡΓΑΣΙΑ ΔΙΑΦΟΡΕΤΙΚΟΙ ΤΥΠΟΙ ΣΥΝΘΕΤΩΝ ΑΕΡΟΠΟΡΙΚΩΝ ΥΛΙΚΩΝ, ΑΞΙΟΛΟΓΗΘΗΚΑΝ ΜΕ ΤΗΝ ΜΕΘΟΔΟ ΤΗΣ ΑΚΟΥΣΤΙΚΗΣ ΕΚΠΟΜΠΗΣ ΚΑΤΑ ΤΗΝ ΔΙΑΡΚΕΙΑ ΣΥΝΘΗΚΩΝ ΚΟΠΩΣΗΣ. ΣΤΗΝ ΣΥΝΕΧΕΙΑ ΑΝΑΠΤΥΧΘΗΚΑΝ ΜΟΝΤΕΛΑ ΠΡΟΓΝΩΣΗΣ ΤΟΥΟΡΙΟΥ ΖΩΗΣ ΤΟΥ ΥΛΙΚΟΥ ΓΙΑ ΔΙΑΦΟΡΕΤΙΚΕΣ ΣΥΝΘΗΚΕΣ ΔΥΝΑΜΙΚΗΣ ΚΑΤΑΠΟΝΗΣΗΣ, ΜΕ ΧΡΗΣΗ ΠΑΡΑΜΕΤΡΩΝ ΑΚΟΥΣΤΙΚΗΣ ΕΚΠΟΜΠΗΣ."],"dc:identifier":["10.12681/eadd/1525","http://hdl.handle.net/10442/hedi/1525"],"dc:language":["gre"],"dc:publisher":["Πανεπιστήμιο Πατρών","University of Patras"],"dc:subject":["Acoustic emission","COMPOSITE MATERIALS AND A/C STRUCTURES","FATIGUE BEHAVIOUR OF COMPOSITE MATERIALS","FATIGUE LIFE PREDICTION","LIFE PREDICTION MODELS","Ακουστική εκπομπή","Κόπωση σύνθετων υλικών","ΜΟΝΤΕΛΑ ΠΡΟΓΝΩΣΗΣ ΥΠΟΛΕΙΠΟΜΕΝΩΝ ΚΥΚΛΩΝ ΖΩΗΣ","ΠΡΟΓΝΩΣΗ ΟΡΙΟΥ ΖΩΗΣ","ΣΥΝΘΕΤΑ ΥΛΙΚΑ (ΑΕΡΟΠΟΡΙΚΩΝ ΚΑΤΑΣΚΕΥΩΝ)","Engineering and Technology","Mechanical Engineering","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Μηχανολόγου Μηχανικού"],"dc:title":["ΑΞΙΟΛΟΓΗΣΗ ΤΟΥ ΟΡΙΟΥ ΖΩΗΣ ΣΕ ΚΟΠΩΣΗ ΑΕΡΟΠΟΡΙΚΩΝ ΣΥΝΘΕΤΩΝ ΥΛΙΚΩΝ ΜΕ ΤΗ ΜΕΘΟΔΟ ΤΗΣ ΑΚΟΥΣΤΙΚΗΣ ΕΚΠΟΜΠΗΣ","FATIGUE LIFE EVALUATION OF A/C STRUCTURAL COMPOSITES BY ACOUSTIC EMISSION"],"dc:type":["PhD Thesis"]},"updated_at":"2026-07-24T02:24:59Z"}