United States Department of Transportation
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Proceedings - International Conference on Wheel/Rail Load and Displacement Measurement Techniques: January 19-20, 1981
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1981-09-01
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[PDF-24.47 MB]
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Abstract:Measurement of wheel/rail characteristics generates information for improvement of design tools such as model validation, establishment of load spectra and vehicle/track system interaction. Existing and new designs are assessed from evaluation of vehicle/track degradation and performance measure associated with dynamic behavior, fuel economy and safety parameters. Diagnosis and verification of hypotheses dealing with carbody hunting, rock and roll, wheel climb, wear and rail strength have been instrumental in introduction of new types of trucks such as the radial and self-steering designs. Advancement in the field of wheel/rail load and displacement measurement have been achieved by organizations all over the world. This conference provided a look at international developments in the current state-of-the-art. From papers presented, it is evident that instrumented wheelsets for load measurement have reached an advanced stage of sophistication. Accuracy and frequency response of commonly used sets are adequate for most dynamic studies and for assessment and diagnosis of existing or new equipment. Because an instrumented wheelset is generally delicate and complicated with its sophisticated electronics and associated data recording systems, future developments should emphasize simplification and reduced costs. Wayside load measurement has seen the TSC/Battelle lateral circuit and the ORE vertical circuit receive wide acceptance. Direct comparison of on-board and wayside measured loads has provided added confidence in both methods. Rail motion can be monitored at wayside, but there has been little development of measurement of wheel motion relative to rail. It is expected that there will be rapid advancements in measurement of wheel/rail interaction. This conference should hasten such development.
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