Essays about: "High Frequency Ultrasonic Testing"

Found 5 essays containing the words High Frequency Ultrasonic Testing.

1. 1. Solutions for presence detection in an intercom door station

   University essay from Lunds universitet/Industriell elektroteknik och automation

   Author : Anton Bengtsson; Måns Andreasson; [2023]
   Keywords : presence detection; sensor technology; PIR; ultrasonic; radar; intercom; Technology and Engineering;

   Abstract : In this work, different solutions for human presence detection in a door intercom device are examined. The study was conducted at a company in Lund, Sweden. READ MORE

3. 2. Monitoring of Partial Discharges on Cable Terminations : An experimental approach to evaluate non-conventional online PD measurement techniques

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Tony Sibo; [2023]
   Keywords : Monitoring; Partial discharges; Medium-voltage cable terminations; Sensor performance; Reliability evaluation; Infrared camera IR-camera ; Ultrasonic emission sensor AE-sensor ; Temperature and relative humidity sensor TRH-sensor ; High frequency current transformer HFCT ; Transient earth voltage antenna TEV-antenna ; Conventional VS non-conventional PD measurement techniques; Övervakning; Partiella urladdningar; Mellanspänningskabelslut; Evaluering av sensorprestanda; Utvärdering av systemets tillförlitlighet; Infraröd kamera; Ultraljudssensor; Temperatur- och relativ fuktighetssensor; Högfrekvent strömtransformator; Transient jordspänningsantenn; Konventionella vs icke-konventionella mättekniker;

   Abstract : The transmission of electric power over long distances has historically posed challenges. However, the advent of high-voltage engineering has not only addressed distance barriers and power losses in electricity transmission and distribution, but it has also significantly improved the efficiency and transmission capacity of power grids. READ MORE

4. 3. The Effect of High Wheel Impact Load on the Rail Reliability - a Case Study at Bodsjön

   University essay from KTH/Spårfordon

   Author : Ngoc Thúy Vy Dang; [2021]
   Keywords : rail defects; rail reliability; Ultrasonic Test; wheel damage; Wheel Impact Load Detector; statistics; järnvägsdefekter; järnvägssäkerhet; ultraljudstest; hjulskador; hjullastningsdetektor; statistik;

   Abstract : This study focuses on the reliability of railway track in the relation with high loads resulted from wheel damages, where higher (dynamic) vertical wheel loads are expected from trains with damaged wheels. The Swedish Transport Administration (Trafikverket) has monitored and recorded data of rail defects and breaks. READ MORE

5. 4. Evaluation of 25 MHz Ultrasonic Testing for Detection of Non-Metallic Inclusions in Steel

   University essay from KTH/Materialvetenskap

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

   Abstract : 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). READ MORE

6. 5. Evaluation of quantification methods for inclusion distribution in clean steel

   University essay from KTH/Skolan för industriell teknik och management (ITM)

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

   Abstract : 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. READ MORE