Analiza kakovosti metod za raziskavo zvarov aluminijastih profilov z makrografijo in ultrazvokom

BERIBAK, ANDREJ (author), Begeš, Gaber (mentor)

V diplomskem delu je obravnavan merilni sistem na osnovi ultrazvoka. Sistem je namenjen kontroli kakovosti zvarov. Prvi del diplomskega dela je posvečen spoznavanju merilnega sistema, pregledu načina uporabe, kalibracija sistema, interpretacija rezultatov, ki jih sistem ob meritvi pokaže. Glavni cilj pa je bil, da se preveri to, na katero področje bi se lahko merilni sistem implementiral in kaj bi lahko ta sistem meril. Na sistemu se je naredila primerjava s kontrolno napravo in analiza MSA. Namen raziskave je bil da, se ugotovi ali bi neporušitvena metoda ultrazvoka lahko zamenjala porušitveno metodo makrografije. V zaključku naloge so predstavljeni rezultati primerjave s kontrolno napravo in MSA analizo. Analiza rezultatov pokaže, da merilni sistem ni sprejemljiv za način meritev, kjer se zahteva točna vrednost uvarjenosti. V primeru, ko pa se preverja, ali se zvara FSW in MIG med seboj prekrivata in s tem zagotavljata tesnost, je pa sistem zanesljiv. Za zamenjavo sistema v proizvodnem obratu, bi moral biti ta zanesljiv pri obeh načinih uporabe. Vredno bi bilo preveriti še druge vrste sond, ki se uporabljajo za ultrazvočno testiranje in analizo ponoviti. Prav tako bi se dalo še izboljšati sam postopek priprave kosa in najti boljše rešitve pri samem brušenju kosa, kar bi pripomoglo pri meritvi.

• Language: Slovenian
• Keywords: Ultrazvok, neporušitvena metoda, porušitvena metoda, makrografija, MSA analiza, varjenje z gnetenjem, kontrola kakovosti
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2021
• PID: 20.500.12556/RUL-130623
• COBISS.SI-ID: 77408259
• Publication date in RUL: 16.09.2021

Secondary language

• Language: English
• Title: Quality analysis of aluminum profiles welds with macrography and ultrasound methods

Abstract

The bachelor’s thesis deals with an ultrasound-based measurement system. The system is designed for quality control of welds. The first part of the thesis is devoted to the introduction of the measuring system, an overview of its use, the calibration of the system and to the interpretation of the results that the system shows when measuring. The main objective was to check in which area the measuring system could be implemented and what it could measure. The system was compared with a control device and measurement systems analysis (MSA) was carried out. The aim of the research was to see if the non-destructive ultrasonic method could replace the destructive macrography method. In the conclusion of the thesis the results of the comparison with the control device and MSA analasys, are presented. The analysis of the results shows that the measurement system is not acceptable for a measurement method where an exact value of the weld penetration is required. However, in the case where FSW and MIG welds are checked if they overlap and thus provide tightness, the system is reliable. To replace the system in a production plant, it should be reliable in both applications. It would be worth checking other types of probes used for ultrasonic testing and repeating the analysis. The piece preparation process itself could also be further improved and better solutions could be found for the grinding of the piece, which would help the measurement.

• Keywords: Ultrasound, non-destructive method, destructive method, macrography, MSA, friction stir welding, quality control