سال انتشار: ۱۳۸۶
محل انتشار: اولین کنفرانس بین المللی بازرسی فنی و آزمون غیرمخرب
تعداد صفحات: ۷
Saeed Izadpanah – Petroleum University of technology/M.sc Inspection engineering
Mehdi Salimi Bajestani – Petroleum University of technology/M.sc Inspection engineering
Masome Zafar Doago – Sharif University Metallurgical engineering
Phased Array is the latest advanced ultrasonic technology that operates by a computer controlled excitation of individual elements in a multi-element transducer. In short, Phased Array generates multiple ultrasonic signals, in nanoseconds, that produce controllable angles, focus depths and/or wide coverage from one inspection point. it offer major advantages over conventional radiographic inspection of welds such as no radiation hazard, chemical disposal , no disruption of production, plus near real-time inspection results. In comparison with conventional ultrasonic, phased arrays are significantly faster, more flexible, reproducible, and can be tailored to the application. Due to the ability to vary the beam angle and focal range, and to sweep the beam along the length of the probe. Therefore, this article will outline how ultrasonic phased arrays work, their advantages and its usage in inspection systems.