Brothers Inspection offering the following NDT (Non Destructive Testing) Services:- Positive Material Identification(PMI), Ultrasonic Testing, Radiograpy Testing, Magnetic Particle Testing , Dye Penetrant Testing and many more of Non Destructive testing available from Us. Although we support our client projects with many more NDT disciplines (see our list under Specialist manpower) these are the main NDT services offered independently on a project basis.
Ultrasonic Testing (UT) uses high frequency sound energy to conduct examinations and make
measurements. Ultrasonic inspection can be used for flaw detection/evaluation, dimensional
measurements, material characterization, and more. To illustrate the general inspection
principle, a typical pulse/echo inspection configuration as illustrated below will be used.
A typical UT inspection system consists of several functional units, such as the
pulser/receiver, transducer, and display devices. A pulser/receiver is an electronic device that
can produce high voltage electrical pulses. Driven by the pulser, the transducer generates high
frequency ultrasonic energy. The sound energy is introduced and propagates through the
materials in the form of waves.
When there is a discontinuity (such as a crack) in the wave path, part of the energy will be
reflected back from the flaw surface. The reflected wave signal is transformed into an electrical
signal by the transducer and is displayed on a screen. In the applet below, the reflected signal
strength is displayed versus the time from signal generation to when a echo was received.
Signal travel time can be directly related to the distance that the signal traveled. From the
signal, information about the reflector location, size, orientation and other features can
sometimes be gained.
Ultra Sonic Testing is used to test welds, castings and wrought products e.g. rolled plate or forgings.