INSPECTION SYSTEM FOR AUTOMATICALLY DETECTING DEFECTS IN TRAIN AXLES

Speaker:
Thorpe, N.; Tecnitest Ingenieros; Spain

Authors:
Guana, I.; Tecnitest Ingenieros; Spain
Àlvarez, A.; Tecnitest Ingenieros; Spain
Thorpe, N.; Tecnitest Ingenieros; Spain
Delgado de Molina, R.; Tecnitest Ingenieros; Spain
Guerro, J.C.; Tecnitest Ingenieros; Spain
Sánchez, M.J.; Tecnitest Ingenieros; Spain
Flòrez, P.; Tecnitest Ingenieros; Spain
Flòrez, D.; Tecnitest Ingenieros; Spain
Acebes, M.; Tecnitest Ingenieros; Spain

ID: ECNDT-0331-2018
Download: PDF
Session: Transportation, railway & automotive UT 1
Room: R2
Date: 2018-06-13
Time: 10:00 - 10:20

Train Axles are critical components for safety, they are under a great number of charge/discharge cycles. Existing studies in order to control cracks show that fatigue failures are usually rare, when they occur unexpectedly there are catastrophic consequences.

Therefore, it is important to determine the type of failure at an early stage to predict the safe life of the axle. So, as part of preventive maintenance activities, laborious manual ultrasonic testing is used.

Thus, in recent years, work to develop a system which allows ultrasonic inspection, in service, for axles so as to: reduce human error, register data and generate detailed reports that guarantees the traceability of inspection, perform a complete inspection without disassembling the train axle. In short, to vastly increase the reliability of the test.

In this paper, an ultrasonic NDT train axle inspection system is presented, which is able to test the complete axle from just one side of the train with almost 100% of the axle being inspected in one pass. This is carried out utilising different straight and angular beam transducers (up to 10), mounted in an Ogive, to maximise the probability of detection of both circumferential and longitudinal defects. The Boretest has the ability to inspect a whole axle from one side in less than 25mins. Each Ogive can inspect a number of different diameter holes within a range.

Through a user-friendly software package, the Boretest plots the results in real time and records the results, including the calibration, of every inspection for further analysis.

Furthermore, a new system has been developed for the inspection of train axles that are undergoing maintenance. This system utilizes the Boretest system and a Phased Array Ultrasonic Inspection system inspecting areas under structure not require to be removed during maintenance. This system will also be presented.