LCF Coupling Failure in a Two-Feet Light Railway
-
A. Neidel
Madeleine Giller Apprenticeship as a materials testing technician at the welding institute SLV Berlin-Brandenburg. After that, she studied at Technical University of Berlin. She graduated with a master degree in material science in 2012. Since November 2012 employment as engineer at the Metallography Laboratory of the Siemens Gas Turbine Works in Berlin. Her main fields of expertise comprise failure analysis and microstructural investigations using the field emission microscope.Susanne Riesenbeck joined the Gas Turbine Plant of Siemens' Energy Sector in 1984 and first un-derwent vocational training there. As a materials testing technician, one of the first fields of her professional endevours was steam turbine service, namely remaining lifetime assessment by means of the replica technique. She is a metallographer and one of the principal failure analysts in the materials testing laboratory. Her main fields of expertise comprise microstructural analyses of steel and iron castings.
Abstract
The failure of a coupling in a two-feet light railway occurred when the engine began to move out of a station. According to the machinist who operated the steam engine at the time of failure, a number of railcars were coupled to the engine. The railcars carried an unusual high number of passengers but were not over-loaded. The crack was driven by a mode that was cyclic in nature. The crack propagated in a fully reversed bending mode. It could be ascertained that the crack propagated in a low cycle fatigue (LCF) mode.
Kurzfassung
Der Bruch der Kupplung einer Parkeisenbahn ereignete sich, als die Lokomotive aus einem Bahnhof ausfuhr. Dem Lokführer zufolge waren zum Zeitpunkt des Bruches mehrere Waggons an die Lokomotive gekoppelt. Die Waggons transportierten zwar eine ungewöhnlich hohe Zahl an Fahrgästen, waren jedoch nicht überladen. Der Riss wurde durch rein wechselnde Biegewechselbelastung verursacht und breitete sich zyklisch aus. Es konnte ermittelt werden, dass der Riss sich aufgrund von niederzyklischer Ermüdung ausgebreitet hat.
About the authors
Madeleine Giller Apprenticeship as a materials testing technician at the welding institute SLV Berlin-Brandenburg. After that, she studied at Technical University of Berlin. She graduated with a master degree in material science in 2012. Since November 2012 employment as engineer at the Metallography Laboratory of the Siemens Gas Turbine Works in Berlin. Her main fields of expertise comprise failure analysis and microstructural investigations using the field emission microscope.
Susanne Riesenbeck joined the Gas Turbine Plant of Siemens' Energy Sector in 1984 and first un-derwent vocational training there. As a materials testing technician, one of the first fields of her professional endevours was steam turbine service, namely remaining lifetime assessment by means of the replica technique. She is a metallographer and one of the principal failure analysts in the materials testing laboratory. Her main fields of expertise comprise microstructural analyses of steel and iron castings.
References / Literatur
[1] Lange, G. (Hrsg.): Systematische Beurteilung technischer Schadensfälle. Wiley-VCH, 2001Suche in Google Scholar
[2] ASM Handbook, Volume 11: Failure Analysis and Prevention. 6. Auflage, ASM International, 1998Suche in Google Scholar
[3] ASM Handbook, Volume 19: Fatigue and Fracture. ASM International, 1996Suche in Google Scholar
[4] ASM Handbook, Volume 12: Fractography. ASM International, 1987Suche in Google Scholar
[5] Colangelo, V.J.; Heiser, F.A.: Analysis of Metallurgical Failures. Second Edition. John Wiley & Sons, New York, Chichester, Brisbane, Toronto, Singapore 1987Suche in Google Scholar
[6] Mobley R.K.: Root Cause Failure Analysis. Newnes, Boston, Oxford, Auckland, Johannesburg, Melbourne, New Delhi 1999Suche in Google Scholar
[7] Electron Microfractography. ASTM STP 453Suche in Google Scholar
[8] Neidel, A. (Hrsg.): Handbuch Metallschäden. 2. Auflage, Carl Hanser Verlag München Wien 2012Suche in Google Scholar
[9] Starr, K.: Siemens AG, Power and Gas, Gas Turbines. Internal communication, December 2014.Suche in Google Scholar
© 2015 Walter de Gruyter GmbH, Berlin/Boston, Germany
Artikel in diesem Heft
- Contents
- Editorial
- Editorial
- The Quality of Prepared Specimens of Si-Wafers for Raman Spectroscopy
- Investigation of the Self Tempering Effect of Martensite by Means of Atom Probe Tomography
- Preparation of Carbide-Free Bainitic Steels for EBSD Investigations
- LCF Coupling Failure in a Two-Feet Light Railway
- Top-ten downloads / Picture of the month
- Top-Ten Article Downloads
- Picture of the Month
- PM-News
- PM-News
- Meeting diary
- Meeting diary
Artikel in diesem Heft
- Contents
- Editorial
- Editorial
- The Quality of Prepared Specimens of Si-Wafers for Raman Spectroscopy
- Investigation of the Self Tempering Effect of Martensite by Means of Atom Probe Tomography
- Preparation of Carbide-Free Bainitic Steels for EBSD Investigations
- LCF Coupling Failure in a Two-Feet Light Railway
- Top-ten downloads / Picture of the month
- Top-Ten Article Downloads
- Picture of the Month
- PM-News
- PM-News
- Meeting diary
- Meeting diary
