Technical Diagnostics and NDT

Enhanced NDT Tube Inspection System is Fast, Easy, and Reliable AcousticEye, the leader in non-invasive tube inspection solutions for the heat exchanger market, has unveiled the Dolphin™ G3 tube inspection system. The G3 is based on the same breakthrough Acoustic Pulse Reflectometry (APR) technology used in the original Dolphin, which has been successfully utilized by customers worldwide since it was first introduced last year. The Dolphin G3 is ideally suited for testing heat exchanger systems across industries such as oil and gas, chemical, and power-generation markets. 

First of all let's have a brief look at some of the most common NDT/NDE methods, •Visual inspection: Visual examiners follow procedures that range from simply looking at a part to see if surface imperfections are visible. He can use the help of a magnifying glass or computer controlled camera. It is the most basic method of all. •Liquid penetrant Testing: Engineer evaluates defects on the material surface with help of liquids or sprays. •Eddy Current Testing: Engineer uses equipment with electromagnetic induction to detect flaws in or on conductive materials. •Acoustics methods (mainly ultrasonic, Acoustic emission, Impedance etc…): Engineer uses different forms of acoustic waves (such as sound, ultrasound and infrasound) in order to evaluate defects. You probably have heard of the Ultrasonic sonogram they use in medicine to see the gender of a baby before birth. It certainly is another use of NDT. Figure: Ultrasonic Scanning of a T beam •Magnetic particle crack detection: ...