Technical Brief

On the Source of the Systematic Error of the Pressure Measurement Film Applied to Wheel–Rail Normal Contact Measurements

[+] Author and Article Information
Jagoba Lekue

Chair and Institute of Rail Vehicles and Transport Systems,
RWTH Aachen University,
Seffenter Weg 8,
Aachen 52074, Germany
e-mail: lekue@ifs.rwth-aachen.de

Florian Dörner

Chair and Institute of Rail Vehicles and Transport Systems,
RWTH Aachen University,
Seffenter Weg 8,
Aachen 52074, Germany
e-mail: doerner@ifs.rwth-aachen.de

Christian Schindler

Chair and Institute of Rail Vehicles and Transport Systems,
RWTH Aachen University,
Seffenter Weg 8,
Aachen 52074, Germany
e-mail: schindler@ifs.rwth-aachen.de

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received February 2, 2017; final manuscript received July 15, 2017; published online September 25, 2017. Assoc. Editor: Sinan Muftu.

J. Tribol 140(2), 024501 (Sep 25, 2017) (4 pages) Paper No: TRIB-17-1045; doi: 10.1115/1.4037358 History: Received February 02, 2017; Revised July 15, 2017

This paper presents research activities regarding the systematic error of the pressure measurement film when measuring the area of the wheel–rail contact. In particular, an explanation for the different error values shown by the different film types was sought. A finite element model was created based on the assumption that not only the film, but also the microcapsules on top of it alter the results. The performance of the existing film models was enhanced by defining microcapsules with element failure and deletion behaviors. The new model was capable of reproducing the trend shown by the systematic error in the experiments. The simulation results confirmed that the measurement error of a certain film type is not only caused by the film itself, but also depends on the failure pressure and especially the diameter of the capsules.

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Lewis, R. , and Olofsson, U. , 2009, “ Basic Tribology of the Wheel-Rail Contact,” Wheel-Rail Interface Handbook, R. Lewis and U. Olofsson , eds., Woodhead Publishing, Cambridge, UK, pp. 34–57. [CrossRef]
Poole, W. , 1986, “ The Measurement of the Contact Area Between Opaque Objects Under Static and Dynamic Rolling Conditions,” Proceedings of Conference on Contact Mechanics and Wear of Rail/Wheel Systems II, G. M. L. Gladwell , H. Ghonem , and J. Kalousek , eds., University of Waterloo Press, Waterloo, ON, Canada, pp. 59–72.
Marshall, M. B. , Lewis, R. , Dwyer-Joyce, R. S. , Olofsson, U. , and Björklund, S. , 2006, “ Experimental Characterization of Wheel-Rail Contact Patch Evolution,” ASME J. Tribol., 128(3), pp. 493–504. [CrossRef]
Fukubayashi, T. , and Kurosawa, H. , 1980, “ The Contact Area and Pressure Distribution Pattern of the Knee: A Study of Normal and Osteoarthrotic Knee Joints,” Acta Orthop. Scand., 51(1–6), pp. 871–879. [CrossRef] [PubMed]
Kim, S. , and Miller, M. K. , 2015, “ Validation of a Finite Element Humeroradial Joint Model of Contact Pressure Using Fuji Pressure Sensitive Film,” ASME J. Biomech. Eng., 138(1), p. 014501. [CrossRef]
Chen, H. , Ban, T. , Ishida, M. , and Nakahara, T. , 2008, “ Experimental Investigation of Influential Factors on Adhesion Between Wheel and Rail Under Wet Conditions,” Wear, 265(9–10), pp. 1504–1511. [CrossRef]
Fujifilm Global, 2017, “ Prescale Measurement Film,” Fujifilm Global, Tokyo, Japan, accessed Jan. 9, 2017, http://www.fujifilm.com/products/prescale
Kleiner, O. , 2011, “ Numerische und Experimentelle Untersuchung der Rad-Schiene-Interaktion Unter Berücksichtigung Mechanischer und Thermomechanischer Effekte [Numerical and Experimental Investigation of the Wheel-Rail Interaction Considering Mechanical and Thermomechanical Effects],” Ph.D. dissertation, University of Kaiserslautern, Kaiserslautern, Germany.
Dörner, F. , Körblein, C. , and Schindler, C. , 2014, “ On the Accuracy of the Pressure Measurement Film in Hertzian Contact Situations Similar to Wheel-Rail Contact Applications,” Wear, 317(1–2), pp. 241–245. [CrossRef]
Johnson, K. L. , 1985, Contact Mechanics, Cambridge University Press, Cambridge, UK, p. 203. [CrossRef] [PubMed] [PubMed]
Hertz, H. , 1882, “ Über die Berührung Fester Elastischer Körper [On the Contact of Solid Elastic Bodies],” J. Reine Angew. Math., 92(9–10), pp. 156–171.
Lekue, J. , Dörner, F. , and Schindler, C. , 2016, “ Determination of the Measurement Accuracy of the Prescale Pressure Measurement Film in the Wheel-Rail Contact,” Tenth International Conference on Railway Bogies and Running Gears, Budapest, Hungary, Sept. 12–15.
Fujifilm Deutschland, 2017, “ Prescale Übersicht,” Fujifilm Deutschland, Düsseldorf, Germany, accessed Jan. 9, 2017, http://www.fujifilm.eu/de/produkte/industrieprodukte/prescale/uebersicht
Fujifilm Global, 2017, “ FAQs,” Fujifilm Global, Tokyo, Japan, accessed Jan. 9, 2017, http://www.fujifilm.com/products/prescale/prescalefilm/#faqs
Liggins, A. B. , Stranart, J. C. E. , Finlay, J. B. , and Rorabeck, C. H. , 1992, “ Calibration and Manipulation of Data From Fuji Pressure-Sensitive Film,” Experimental Mechanics: Technology Transfer Between High Tech Engineering and Biomechanics, Little, E. G. , ed., Elsevier Science Publishers, Amsterdam, The Netherlands, pp. 71–88.
Hale, J. E. , and Brown, T. D. , 1992, “ Contact Stress Gradient Detection Limits of Pressensor Film,” ASME J. Biomech. Eng., 114(3), pp. 352–357. [CrossRef]
Hoffmann, K. , and Egger, M. , 2000, “ Vergleichsstudie von Methoden der Flächenpressungsmessung [Comparative Study of Contact Pressure Measurement Methods],” Elektrotech. Informationstech., 117(4), pp. 255–260. [CrossRef]
Dörner, F. , 2016, “ Methode zur Verifizierung und Validierung von Finite-Elemente-Berechnungen des Rad-Schiene-Normalkontakts [Method for the Verification and Validation of Finite Element Simulations of the Wheel-Rail Normal Contact],” Ph.D. dissertation, University of Kaiserslautern, Kaiserslautern, Germany.


Grahic Jump Location
Fig. 1

Analytical pressure distribution and experimentally determined radii of the contact patches

Grahic Jump Location
Fig. 2

Cross sections of a monosheet film before (left) and after use (right)

Grahic Jump Location
Fig. 3

Axisymmetric finite element model of the experimental setup: 1—Spherical contact body (coarse mesh); 2—Spherical contact body (fine mesh); 3—Contact body with flat surface (fine mesh); 4—Contact body with flat surface (coarse mesh); 5—Film; and 6—Microcapsules

Grahic Jump Location
Fig. 4

Analytical pressure distribution, measured radii of the contact patches using the MS, HS, and HHS films (square, circle, and plus shaded symbols) and simulation results of the film models coated with capsules of yield stress 10 MPa, 50 MPa, and 130 MPa (square, circle, and plus unshaded symbols) and variable size (small, medium, and large sized symbols) for three representative cases: spherical bodies and applied forces of 300 mm and 25 kN (top), 450 mm and 50 kN (middle), and 600 mm and 100 kN (bottom)



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