Results 141 to 150 of about 266 (170)

Detection of flaws in used railroad rail by ultrasonic inspection techniques

NDT International, 1979
Abstract The qualitative differences in the responses of new and used rail to ultrasonic inspection have been known for some time. The material presented in this paper quantifies the actual responses obtained from a collection of four rail samples which are typical of rail used on United States' railways.
openaire   +1 more source

Eye safety considerations of a laser-based rail flaw detection system

ILSC 2007: Proceedings of the International Laser Safety Conference, 2007
The Transportation Technology Center, Inc. (TTCI), a subsidiary of the Association of American Railroads (AAR) and Tecnogamma, SPA are evaluating the efficacy of a non-contact, laser-based rail flaw detection system. Through the photo-acoustic effect, the absorption of nanosecond laser pulses by the rail results in the generation of both bulk and ...
Richard Hughes, Gregory Garcia, Fabrizio Prior   +2 more
openaire   +1 more source

Use of Laser Ultrasonics for Rail Flaw Detection—An Insight into Preliminary Experiments

ICRT 2017, 2018
There is an ever increasing demand for higher tonnages to be transported in heavy haul trains. This means that ensuring safety and reliability of rail tracks becomes an even more critical priority. Early detection of rail flaws ensures transportation safety and averts unplanned downtime.
S. Alahakoon, M. Pathak, Y. Q. Sun, M. Spiryagin, C. Cole   +4 more
openaire   +1 more source

Small-Scale Rail Flaw Detection Car Design and Damage Position Estimation

2017 International Conference on Sensing, Diagnostics, Prognostics, and Control (SDPC), 2017
As China's railway transport system is getting busier and the trains are continually speeding up, the rails have to bear more and more heavy cyclic loads generated by the repeat force between the wheels and rails, and the internal damages are easier to be produced, which directly endanger the running safety.
Jinling Yao, Gang Yu
openaire   +1 more source

THE EFFICIENCY OF THE SIGNAL ACCUMULATION METHOD IN MOBILE ULTRASONIC RAIL FLAW DETECTION

Kontrol'. Diagnostika
The article is devoted to the problem of determining the real signal among the noises in ultrasonic flaw detection of rails. The method of signal accumulation is considered as one of the ways to improve the quality of flaw display. The result of the application of the accumulation method in continuous ultrasonic non-destructive testing of rails by ...
V. F. Tarabrin, K. R. Ovseenko
openaire   +1 more source

Groundwork for Rail Flaw Detection Using Ultrasonic Phased Array Inspection

AIP Conference Proceedings, 2003
An apparent increase in the detectability of certain flaws results when the ultrasonic inspection beam was oriented off the longitudinal axis of railroad rail. Here, artificial reflectors were used to better define the extent of material “seen” by inspection beams, and determine how surface curvature might affect the inspection.
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Discussion on the Daily Application of GCT-8C Digital Rail Flaw Detector in Rail Flaw Detection

Foreign Language Science and Technology Journal Database Engineering Technology, 2021
openaire   +1 more source

Analysis of Nondestructive Flaw Technology in Rail Detection

Foreign Language Science and Technology Journal Database Engineering Technology, 2022
openaire   +1 more source

Rail base flaw detection and quantification based on the modal curvature method and the back propagation neural network

Engineering Failure Analysis, 2022
Zhehao Zhu, Qiutong Li, Y Liu
exaly  

Prospects for the development of rail flaw detection in railway transport

Railway Transport of Ukraine, 2022
openaire   +1 more source