Mjerenje brzine ultrazvuka u radnim etalonima

undergraduate thesis

• Title (english): Ultrasonic velocity measurements in calibration blocks
• Author: Mario Kovačević
• Mentor: Damir Markučič (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2016-09-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Tipično ultrazvučno ispitivanje sastoji se od nekoliko funkcionalnih cjelina, kao što su ultrazvučni uređaj, ultrazvučne sonde, etaloni i referentni uzorci, te druga pomoćna oprema. U svrhu provjere mogućnosti opreme da zadovolji traženu namjeru uz potrebnu osjetljivost ispitivanja, definiraju se radne karakteristike ultrazvučnog sustava, koje valja za svaki sustav odabrati, podesiti i redovito provjeravati za vrijeme i nakon ispitivanja.

U ovom radu naglasak je stavljen na podešavanje vrijednosti parametara brzine koje se provodi na radnim etalonima čijim se odgovarajućim podešavanjem može znatno utjecati na dobivene rezultate mjerenja i ispitivanja. U normama se prikazuju i sistematiziraju tehnički zahtjevi u pogledu postava mjernih parametara za određivanje brzine ultrazvuka.

U konačnici se ispitivanjem provjerava da li se dobiveni rezultati mjerenja poklapaju s propisanom brzinom ultrazvuka u normama.

Abstract (english)

Typical ultrasonic testing consists of several functional units, such as ultrasonic instrument, ultrasonic transducer, calibration blocks and other auxiliary equipment. In order to check the possibilities of equipment to meet the requisite measuring intent with the required sensitivity, the parameters of the ultrasonic systems are selected, defined and checked before testing.

In this paper, emphasis is placed on checking the longitudinal ultrasound velocity on calibration blocks. The appropriate settings can significantly affect the results of measurements and tests. The standards display and systematize technical requirements for setting measurement parameters to determine the ultrasound velocity.

Ultimately, a carried out measurement checks whether the actual results obtained match the prescribed ultrasound velocity in the standards.

• Keywords: ultrazvuk; brzina ultrazvuka; radni etaloni
• Keywords (english): ultrasound; ultrasonic velocity; calibration blocks
• Language: croatian
• URN:NBN: urn:nbn:hr:235:002829
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 17:46:37