A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Determination of position of defects in rails using ultrasonic phased arrays / ; Defektų vietos nustatymas geležinkelio bėgiuose naudojant ultragarsinę fazuotą gardelę.
In this work, positions of defects in the rail (test sample) were determined using Ultrasonic Phased Arrays. Several kinds of defects in rails and welds were studied along with the concept of Ultrasonic Phased Arrays. Using CIVA software, the test sample was designed and inspected virtually with two types of phased arrays. Beam profiles, interaction of ultrasonic waves with defects were mainly studied from the obtained results. Experimental analysis was also performed using OLYMPUS OMNISCANMX set-up. This helped to analyse the ultrasonic wave propagation in the test sample and interaction with the defects. An efficient phased array methodology was specified by comparing the results of different phased arrays. At last, uncertainties in the measurement results were evaluated.
Determination of position of defects in rails using ultrasonic phased arrays / ; Defektų vietos nustatymas geležinkelio bėgiuose naudojant ultragarsinę fazuotą gardelę.
In this work, positions of defects in the rail (test sample) were determined using Ultrasonic Phased Arrays. Several kinds of defects in rails and welds were studied along with the concept of Ultrasonic Phased Arrays. Using CIVA software, the test sample was designed and inspected virtually with two types of phased arrays. Beam profiles, interaction of ultrasonic waves with defects were mainly studied from the obtained results. Experimental analysis was also performed using OLYMPUS OMNISCANMX set-up. This helped to analyse the ultrasonic wave propagation in the test sample and interaction with the defects. An efficient phased array methodology was specified by comparing the results of different phased arrays. At last, uncertainties in the measurement results were evaluated.
Determination of position of defects in rails using ultrasonic phased arrays / ; Defektų vietos nustatymas geležinkelio bėgiuose naudojant ultragarsinę fazuotą gardelę.
Maddela, Kireeti (author) / Jasiūnienė, Elena
2017-01-01
Theses
Electronic Resource
Lithuanian , English