In December 2007 in "Perm motor factory" LTD the new unique system of the automated testing of preparations shaft of aviation engines has been started in operation.
The system consists of a bed with immersion tank, a drive of rotation, the scanner, system of water-preparation, a control system of electric drives,
ultrasonic flaw detector, the personal computer of management and registration.
100% ultrasonic testing of shaft in diameter 80-500 mm,
with length 400-2500 mm and the maximal weight up to 500 kg are provided .
The scanner can carry out movements along an axis of a controllable shaft (axis X),
perpendicularly axes of a controllable shaft in a horizontal plane (axis Y), perpendicularly
axes of a controllable shaft in a vertical plane (axis Z), and also rotation of the transducer in
polar coordinates (axis A and B).
Velocity of rotation of a shaft: 0,1..20 rev/min
Diapason of moving on axis X: 2900 mm
Diapason of moving on axes Y and Z: 400 mm
Accuracy of positioning on axes: not worse 0,1 mm
The minimal step of moving: 0, 01 mm
The special system of water-preparation consists of pump station and a reception tank in
which the system of maintenance of the set temperature of a liquid is established.
In system the ASNK-VAL is used the newest ultrasonic industrial flaw detector UMD-100, with the preliminary amplifier. In real time flaw detector displays on the screen of the personal computer the accepted ultrasonic signal, and on a command from the personal computer, makes record of result of the tests over the set step, synchronously with movement of the scanner on axis X, Y, Z or rotation of a shaft - axes W.
Frequency range of the amplifier: 0,6-25 MHz
Amplitude of an impulse of stimulation: 200V
Number of the periods of impulses :1-8
Adjustment of duration impulse:10-500ns
Discontinuity installation of zones of the inspection: 10ns
The automated system works under control of program AsnkView allowing: to create
or use earlier the created model of a shaft, to make adjustment ultrasonic of the channel
flaw detector UMD-100, to display 3D model of a shaft during the control over a solid-state
and translucent kind with a coordinate grid and without it, to build axial section of model
of a shaft for reception of the drawing, to display ultrasonic signals in the form of A, B,
and C-scan, completely to document process of the testing and a memory of a database
of results.
The control system of process of the testing allows observing and correcting work of installation
both from a workplace of the operator, and from the removed computer (for example from
laboratory NDT).
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