Aerospace Ultrasonic Test Equipment Basics

Sensors Technology

Aerospace Ultrasonic Test Equipment Basics

Aerospace Ultrasonic Test Equipment Basics

The components of ultrasonic test Equipment for the aerospace industry. External and

PC-based components constitute an ultrasonic test system for the aerospace industry. Each

of these components has functions and considerations when assembled to create a custom

flexible ultrasonic test set.


Installation of test equipment for ultrasonic immersion.


Ultrasonic test equipment can take various forms, but the most common type of ATE is

immersion test equipment. Spraying systems are the most widely use for the inspection

of composite material in the aerospace industry and composite parts with complex geometry?

therefore To achieve effective acoustic impedance matching between the coupling and the composite

component or titanium plate under test (unit under test), and to achieve free range across

the entire surface of the UUT, many test systems use a submerged tank filled with water.

so that This equipment uses one or more ultrasonic transducers so that move across the surface of the

UUT. Receive echoes from surfaces. so that This process is repeat many times per second with a

pulse and a subsequent echo. if The application software sets up the test and presentation.

Motion control moves the ultrasonic transducers. The signal from the ultrasonic transducer

is amplified and filtered before being sent back to the PC. so that The waveform is transform from

voltage to moments by an analog-to-digital converter. so that The application software handles the data.

The range of immersion test equipment can vary greatly in the aerospace industry, including,

for example, exploration bridges with up to 17 axes. Acoustic microscopes use high-frequency

ultrasound and high-resolution scanning devices.


Ultrasonic transducers


Ultrasonic transducers are manufacture everywhere by piezoelectric porcelains that tremble

at ultrasonic occurrences. so that The piezoelectric ceramics in ultrasonic transducers used in field service

often contact sensors and are contoure to the surface to be inspect. Standard immersion

ultrasonic transducers operate as a general rule so that in ultrasound the voltage amplitude is

proportional to the amount of energy repeated by the fault. In immersion tests, the ultrasonic

wave must move through the water before reaching UUT. so If the distance is known, an activation

delay can be implement to minimize the amount of unnecessary data recorded and store.

There is a trade-off between resolution, speed, and a number of channels, data capacity, and

cost. However, technology is evolving and many of these tradeoffs are becoming negligible in

terms of cost.

Movement and shift control


Most automated ultrasonic test systems use motion control to collect multiple data points

with one transducer. For example, acquiring B or C scans requires movement of the ultrasound


On the surface of the UUT to create a surface map.


Regarding switching, in ultrasonic applications so that have a digitizer and pulses/receiver for

multiple ultrasonic sensors, switching is necessary to direct the signals correctly. It is use for equipment such as acoustic microscopes that use sensors to create images. Ultrasonic sensor

arrays are common in NDT aerospace applications because sound energy can be control

in multiple directions without moving the sensor array. Multi-transducer applications are

also common when test speed is an issue.


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