Sökning: "Ultrasonic Testing"

Visar resultat 16 - 20 av 57 uppsatser innehållade orden Ultrasonic Testing.

1. 16. Evaluation of 25 MHz Ultrasonic Testing for Detection of Non-Metallic Inclusions in Steel

   Uppsats för yrkesexamina på avancerad nivå, KTH/Materialvetenskap

   Författare :Henrietta Isaksson; [2021]
   Nyckelord :Ultrasonic Testing; High Frequency Ultrasonic Testing; Quantification of inclusions; Fatigue Testing; Ultraljudstestning; Högfrekvent ultraljudstestning; Kvantifiering av inneslutningar; Utmattningstestning;

   Sammanfattning : Quantification of inclusions is important since it is correlated to the steel’s fatigue properties. One method that could be further developed for detection of inclusions in steel is ultrasonic testing (UST). LÄS MER

3. 17. Non-Destructive Testing Of Concrete Bridges

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Byggkonstruktion och brand

   Författare :Nadja Hedlund; [2020]
   Nyckelord :Non-Destructive testing; Concrete; Covermeter; Ultra-Sonic Pulse Velocity; Rebound hammer;

   Sammanfattning : Non-destructive testing is of great value in cases where a structure's future is investigated to find out what the best measure is. It is not always the best solution to demolish and build new. Many structures can be repaired and function several more years. LÄS MER

4. 18. Evaluation of quantification methods for inclusion distribution in clean steel

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Felicia Fröjd; [2019]
   Nyckelord :Large area scanning; high frequency ultrasonic testing; light optical evaluation; inclusion distribution;

   Sammanfattning : Ovako products are in many cases used in high fatigue applications. Currently Ovako use ultrasonic evaluation at 10 MHz as a volumetric method for inclusion control. This study intends to investigate two new methods for quantification of micro inclusions. LÄS MER

5. 19. Optical Fiber sensing of acoustic waves using overlapping FBGs

   Master-uppsats, Mittuniversitetet/Institutionen för elektronikkonstruktion

   Författare :Erik Lillebø Hole; [2019]
   Nyckelord :Ultrasonic; Optical Fiber Sensing; Fiber Bragg Grating;

   Sammanfattning : The objective of this thesis was to investigate if an optical fiber sensing method with the use of two overlapping fiber Bragg gratings to measure Lamb wave $S_0$ modes in a steel plate, and how it would compare to traditional PZT transducers. A solution was proposed where the use of an optical fiber sensing system was built and took advantage of the strain dependence of a fiber Bragg grating mounted to a steel plate. LÄS MER

7. 20. Production Process Development

   Master-uppsats, Lunds universitet/Industriell Produktion

   Författare :Richard Sundbye; Marcus Strandberg; [2019]
   Nyckelord :Technology and Engineering;

   Sammanfattning : The master thesis is a collaboration between Trelleborg AB and the division of Production and Materials Engineering at Lund University, Faculty of Engineering. The objective of the thesis has been to analyse the current production system from a lean perspective, identify an area in need of improvement and generate concrete solutions for how the studied area can be improved in terms of cost, performance and from a lean perspective. LÄS MER