Acronym for Time of Flight Diffraction, TOFD method sends ultrasonic waves from one end of the welded part and the other part receives them, and the time of flight diffraction of the ultrasonic waves((△t) is utilized along with the recordable test method developed with computer software to represent the shape of the fault as lateral profiles
Subject and application
For welded parts of a pressure container for power plants
Automated Phased Array UT
Basic principle
Derived from a multi-sensor method, 8 or up to 128 ultrasonic vibrators are utilized simultaneously to precisely test complex structures
Subject and application
Complex structures such as turbine blades or medical ultrasonic diagnosis
MBECT
Basic principle
Magnetic based eddy current test(MBECT)
MBECT is one of the most advanced NDE applicable to a magnetic test subject where general ECT would not be applied, featuring fast speed and a non-contact method
Subject and application
Detecting corrosion of heat exchanger tubes of petrochemical plants
Positive material identification (PMI)
Test method
X-ray fluorescence analyzer (XRF) utilizes the x- or r- ray to measure the spectrum of a unique x-ray discharged inside the subject material and utilizes a semiconductor detector (Si-Pin) to identify chemical composition
Purpose
- Material identification of steel
- Material identification of jewelry
- Component analysis of rocks or earth
- Component analysis of suspension or liquid
- Analysis of construction materials such as paint, wood or concrete
- Air component analysis of fine dust or by utilizing a filtering device