The Ultrasonic Phased Array Inspection Technology Used in Tubular Joint Welds of Offshore Platform Structures
Aimed at the practical requirement of tubular joint wel ds inspection of offshore platform structures, the ultrasonic phased array inspection algorit hm for offshore platform structures is proposed in this paper, and the ultrasonic phased array inspec tion system for offshore platform structures is developed. The experiment of tubula r joint model is performed with the ultrasonic phased array inspection system for offshore platform structures, the flaws characteristic could be exactly estimated and the flaw s size could be measured through ultrasonic phased array inspection software system. Expe riment results show that the ultrasonic phased array inspection algorithm for offshor e platform structures is feasible, the ultrasonic phased array inspection system could detect fl aws in tubular joint model, the whole development trend of flaws is factually imaging by the ul trasonic phased array inspection technology of offshore platform structures.
Groundwork for Rail Flaw Detection Using Ultrasonic Phased Array Inspection
An apparent increase in the detectability of certain flaws results when the ultrasonic inspection beam was oriented off the longitudinal axis of railroad rail. Here, artificial reflectors were used to better define the extent of material “seen” by inspection beams, and determine how surface curvature might affect the inspection. Presumably, such information could be useful for suggesting optimum positioning of linear array probes in testing, and help determine the validity of simulation models of this inspection for various cases.
Development of an approach to aid in the design of ultrasonic rail inspection search units
The use of ultrasonic simulation models is encouraged as a means to assist the design of new ultrasonic rail inspection units. The rail inspection environment poses unique challenges toward development of a fully valid model, which are often designed for traditional immersion scanning. Critical benchmark experiments contrasting immersion test results with scans made with a rail search unit should establish differences between the methods, highlighting areas of modeling that most need improvement.