DefinePK

Abstract

Ultrasonic testing has variety of usage. In composite laminates material, it has been use for defect detection such as flaw, un-bonded, void, micro crack, foreign material occurrences and thickness measurement. In this study, glass fiber composite laminates (GFCL) being used and produced in-housed with dimension 120 mm length x 80 mm width x 2.4 mm thickness. It consist an artificial defect which was drilled 6 mm in diameter. Ultrasonic range finder transducer with frequency 42 kHz and single crystal immersion transducer with frequency 2.25 MHz have been applied in order to study the performance between both transducers. During measurement, gap distance between specimen surface and both transducer had been fixed at 10mm. Moreover, linear motion at x-axis with constant speed being controlled during measurement process. Measurement data from ultrasonic rangefinder and single crystal immersion transducer had been compared to determine the accuracy between both transducer. All the data are required in order to develop ultrasonic scanning unit that applicable for those transducer. However, some experimental data need to be analyze before further development to avoid misleading especially on operational and functionality of ultrasonic scanning unit.