Development of a wayside measurement system for the evaluation of wheel-rail lateral contact force

Cortis, Daniele; Bruner, M.; Malavasi, Gabriele

doi:10.1016/j.measurement.2020.107786

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…These sensors do not require significant modification to track components during the installation process. Over the past few decades, research on strain-gauge-based systems for track response monitoring has been noticeable ( 1 – 33 ). Although the use of strain-gauge-based systems for train-induced wheel-load measurement is relatively common, only a few studies have recently reported the use of these systems for rail–tie interaction force measurement ( 2, 5, 7, 9, 13, 14, 26, 27, 29–33 ).…”

Section: Introductionmentioning

confidence: 99%

Response of Strain-Gauge-Based Tie Reaction Measurement Circuits under Dynamic Loading and Variable Support Conditions

Rabbi,

Alturk,

Bruzek

et al. 2023

Transportation Research Record: Journal of the Transportation R

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Strain gauges are often used to measure vertical wheel loads in a railroad track. This approach is based on the concept of differential-shear-strain (DSS) measurement: The difference in vertical shear force between two points along a beam equals the magnitude of the resultant of applied vertical forces in between. With a slight modification to the strain-gauge positions and installation of an additional set of strain gauges, this concept can be extended to measure the vertical rail–tie interface reaction forces, thus assessing the tie support conditions. Although the application of DSS measurements for vertical-wheel-load quantification is widely prevalent in the railroad community, the validity of this approach for tie reaction measurement has been relatively unexplored. Conceptually, the approach is similar to the vertical-wheel-load measurement system, with the only difference being the placement of the strain gauges along the rail. Nevertheless, several questions have been raised about how different track and loading configurations can affect the accuracy of such a measurement system. To address some of these concerns and establish this approach as a viable method for tie support condition assessment, a field-validation effort was undertaken. Under the scope of this research effort, the strain-gauge-based DSS measurement system for rail–tie interface reaction-force measurement was evaluated in the field under static as well as dynamic loading. The study showed that the strain-gauge-based measurement approach is as accurate as other conventional methods of tie reaction-force measurement.

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Section: Introductionmentioning

confidence: 99%

Response of Strain-Gauge-Based Tie Reaction Measurement Circuits under Dynamic Loading and Variable Support Conditions

Rabbi,

Alturk,

Bruzek

et al. 2023

Transportation Research Record: Journal of the Transportation R

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show abstract

“…Condition monitoring using strain gauges has been widely used for railway applications in both vehicle-based [13,14] and track-based systems [15][16][17][18][19]. Impact or dynamic force is the most common output evaluated from strain gauge data although strain is the more relevant factor for material degradation.…”

Section: Introductionmentioning

confidence: 99%

“…The monitoring thresholds need to be adjusted based on different track stiffness and traffic. A neat strain gauge configuration for use on the rail was proposed for measuring vertical and lateral impact forces [18,19], but this was designed for use on plain track and is not directly applicable to S&Cs as these do not have a uniform cross section. However, a modest change in the strain-gauge bridge configuration has the potential for S&C applications.…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics of a switch and crossing on the West Coast main line in the UK

et al. 2022

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Railway switches and crossings constitute a small fraction of linear track length but consume a large proportion of the railway track system maintenance budget. While switch and crossing (S&C) faults rarely prevent trains from running, switches and crossings are the source of many faults and need continual attention. On the rare occasions when trains are prevented from running the cost of the disruption is very high. Condition monitoring of the point operating equipment that moves the switchblades has been in use for many years but condition monitoring of the state of the switch in terms of the support and mechanical damage as trains pass over has only recently started to become possible. To this end, it is important to understand the correlation between S&C faults and sensor data that can detect those faults. This paper assesses some of the data collected from multiple sensors variously positioned on and around a switch and crossing on the UK mainline for a few days of normal train operation. Accelerometers, geophones, and strain gauges were installed at the locations where they were anticipated to be most useful. Forces at the load transfer point on the crossing nose were estimated from two separate strain gauge bridges and possible use of acceleration on the crossing is discussed. Correlations between different data are analysed and assessed and correlation between peak estimated load transfer forces and accelerations is presented. Based on the analysis, conclusions are drawn about the different types of dynamic information around S&Cs that can be obtained from a variety of sensor types.

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Study on Measurement Repeatedness of Vertical Impacts on Rail of Loaded and Empty Wagons

Vaičiūnas

Steišūnas

2023

Lecture Notes in Intelligent Transportation and Infrastructure

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Development of a wayside measurement system for the evaluation of wheel-rail lateral contact force

Cited by 8 publications

References 6 publications

Response of Strain-Gauge-Based Tie Reaction Measurement Circuits under Dynamic Loading and Variable Support Conditions

Response of Strain-Gauge-Based Tie Reaction Measurement Circuits under Dynamic Loading and Variable Support Conditions

Dynamic characteristics of a switch and crossing on the West Coast main line in the UK

Study on Measurement Repeatedness of Vertical Impacts on Rail of Loaded and Empty Wagons

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