An ultrasonic method for measuring residual mechanical stresses in the rims of solid-rolled railroad wheels that considers the intrinsic anisotropy of the material

Dymkin, G. Ya.; Krasnobryzhii, S. A.; Shevelev, A. V.

doi:10.1134/s106183091301004x

Cited by 6 publications

(1 citation statement)

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“…In [27] the value of β B = −0.73 × 10 −5 was reported and in [28] value of β B = −0.81 × 10 −5 . The recent data concerning elastoacoustic coefficient for rolled-forged wheels were presented in [29]. Authors tested samples cut in hoop and in radial directions of steel grades 2 and ER7 wheels.…”

Section: Elastoacoustic Coefficientmentioning

confidence: 99%

Ultrasonic Evaluation of Residual Hoop Stress in Forged and Cast Railroads Wheels—Differences

Szelążek

2015

J Nondestruct Eval

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Paper describes the assessment of hoop residual stresses in the rim of monoblock railroad wheels using ultrasonic methods. Dangerous tensile stress builds up during service as a result of heat loads caused by braking with braking blocks/brake shoes. Results of experiments on two types of monoblock wheels are described: on rolled-forged wheels used in Europe and on cast wheels manufactured and used in North America. Stresses in forged wheels are evaluated with birefringence technique. Investigations carried out in various countries, using different ultrasonic equipment, proved that an ultrasonic technique can provide valuable information concerning stress values in wheels during manufacturing and in service. However, they also showed that due to different microstructures in the rim material and differences in wheel plate design, forged and cast wheels present unique problems for ultrasonic stress evaluation. The aim of this paper is to emphasize these differences and to illustrate how they influence ultrasonic readings. The second ultrasonic technique to evaluate stress is proposed to standard cast wheelstechnique based on measurements of time of flight of subsurface (surface-skimming) longitudinal waves propagating in hoop direction on both rim faces. Presented data are based on detailed measurements of acoustic properties of monoblock wheel materials and on earlier experiments performed on forged and cast wheels subjected to inductive heating, braking in a test stand or on track.

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Section: Elastoacoustic Coefficientmentioning

confidence: 99%

Ultrasonic Evaluation of Residual Hoop Stress in Forged and Cast Railroads Wheels—Differences

Szelążek

2015

J Nondestruct Eval

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Methodology of the selection of effective dipping and control over the filling depth of open-textured construction materials

Nikolaev

Benin

Попов

2021

J. Phys.: Conf. Ser.

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It is determined that for the combination of the dipping process with the ultrasound control it is necessary to carry out the optimization of the filling speed and the precision of control over the dipping depth, to determine the optimum frequency of the ultrasound emission which satisfies the speed and the dipping measurement precision of the sample with the hydrophobic agent. On the basis of the performed multiobjective optimization, experimental results for the dipping and the control over the dipping stage of porous materials by the solution in the uniform acoustic field alignment charts are received for the selection of the rational frequency of ultrasound fluctuations which allow regulating and/or optimizing dipping and control processes over the material filling depth subject to customer tasks. The selection methodology of effective values of parameters of the acoustic field providing the combination of filling processes and the control over the depth of the dipped material filling is well-reasoned.

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Estimation of the residual stresses in rails using electromagnetic–acoustic introduction–reception of waves

et al. 2016

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An ultrasonic method for measuring residual mechanical stresses in the rims of solid-rolled railroad wheels that considers the intrinsic anisotropy of the material

Cited by 6 publications

References 1 publication

Ultrasonic Evaluation of Residual Hoop Stress in Forged and Cast Railroads Wheels—Differences

Ultrasonic Evaluation of Residual Hoop Stress in Forged and Cast Railroads Wheels—Differences

Methodology of the selection of effective dipping and control over the filling depth of open-textured construction materials

Estimation of the residual stresses in rails using electromagnetic–acoustic introduction–reception of waves

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