TECHNOVOTUM - development and production of equipment and technologies for non-destructive testing (NDT)

Tomographic 2.9, RZD Industry Standard 1.11.002.-2008



Application "Tomographic 2.9" implements the combined ultrasonic testing of wheel sets of cargo vehicles in accordance with requirements of the RZD Industry Standard 1.11.002-2008 "Nondestructive testing. Elements of vehicle wheel sets. Technical specifications of ultrasonic testing ".

Specialized procedure "Tomographic 2.9" provides the following:

  • manual ultrasonic testing of wheel set axles under “mandatory” versions of method AR1.1, AR1.2, AR1.3, AR2, AR3, AR3.1, ТR2 and “supplementary” versions of method AR1.4, AR4, ТR1;
  • mechanized ultrasonic testing of wheel set axles under “mandatory” versions of method ВR1, ВR2, ВR3, ВR4;
  • mechanized ultrasonic testing of wrought wheels of wheel sets under “mandatory” versions of method DR1.1, DR2.1, DR2.2, DR3.1, DR3.3 and “supplementary” versions of method DR1.2, DR3.2, WR;
  • manual ultrasonic testing of wrought wheels of wheel sets under “mandatory” version of method DR4.

Mechanized ultrasonic testing of wrought wheels is performed using scanning device USK-5ТМ and ensures control of required zones for single revolution with possibility of tomographic imaging and determination of coordinates of defective area. If required, scanner USK-5TM is equipped with eddy-current probe to reveal manufacturer’s marks in order to prevent the over reject of wheels (false flaw responses in the marking area). Due to built-in multi-channel system, ultrasonic and eddy-current probes operate simultaneously.

Mechanized ultrasonic testing of wheel set axles using scanning devices USO-1ТМ is performed starting from the part ahead of wheel seat and ensures control of required zones without dismantling of axle box for single revolution with possibility of tomographic imaging and determination of coordinates of defective area. For preliminary preparation of tested surface (cleaning from operational pollution), mechanical scanner of cleaning UOO-1T with replaceable cartridges (knives) is offered to user. During ultrasonic testing of wrought wheels and wheel set axles using scanning devices USK-5ТМ and USO-1ТМ, A-scan of current area is displayed on the flaw detector screen with all PEP’s within composition of scanning device in operation. During testing, data on all PEP’s (device movement over tested object) is displayed on С-scan.

Concept of the "Tomographic 2.9" application is oriented toward maximal deemphasizing of human factor by means of implementation of following functions:

  • automatic gain control allows user not to spend time for selection of required gain.
  • acoustic contact tracing;
  • full PEP monitoring;
  • automatic tuning out of structural noises;
  • visualization of flaws, including equivalent area, location depth and spatial orientation.

Special software “Railway NDT operator AWS” supplied with Tomographic UD4-ТМ flaw detector allows documentation of test results, their storing in electronic database and preparation of the wheel set certificate. Also, at delivery, training demo clips on operation with specialized applications are built-in in the instrument and facilitates significantly familiarization with instrument.