MATE1104 [NDT] Ultrasonic Testing

Ultrasonic

…Utilizes sound energy at frequencies above the audible range to find internal and exterior discontinuities in solid materials

Commonly used for measuring thickness of material from one side only

Sound

______ is the mechanical vibration of particles in a material

As ______ travels through a medium it makes the atoms to vibrate around a fixed point

And they vibrate to the same amount of frequency as the ____ wave

Variations of sound or pitches are based on the frequency of the _____ wave

Basic Equipment

Electronic Signal Generator — Makes bursts of alternating current when required

Sending Transducer — emits a beam of ultrasonic waves when the bursts of AC are applied to it

Couplant — Transfers energy in the beam of ultrasonic waves to the test piece

Receiving transducer — Accepts and converts the returning waves from the test piece to the corresponding bursts of AC.D

ESG with display

Soundwaves travel through the material with some slight loss of energy and are reflected at interfaces.

The reflected beam is detected and inspected to define the location and presence of the flaws.

Concerns with UT Testing

Flaw Detection

Component Inspection

Welding Inspection

Vessel and piping inspection

Thickness Measurement

Corrosion surveys

Plant Maintenance

Plate and cladding measurements