Details
| Translated title of the contribution | Correlation of microtribological properties with the macroscopic frictional behavior using synchronization as an example |
|---|---|
| Original language | German |
| Pages (from-to) | 13-17 |
| Number of pages | 5 |
| Journal | Tribologie und Schmierungstechnik |
| Volume | 47 |
| Issue number | 2 |
| Publication status | Published - Mar 2000 |
Abstract
In the traditional manually operated vehicle transmissions and in their modern automated versions, synchronizers are widely used to equalize gear speeds while shifting. For their proper functioning, the sliding friction between the cones must be carefully controlled. The macroscopic frictional characteristics of complete synchronizers were extensively studied on test benches at the Institute of Machine Elements, Engineering Design and Tribology at the University of Hannover, Germany, using SpiraxTM MA80W oil (tribosystem A) and ATF Dexron IID oil (tribosystem B). From these tests, conclusions were drawn on the contribution of boundary friction. Direct measurements required focusing on the microscopic real areas of contact with direct interaction of the surfaces. A combination of microscratch-testing and atomic force microscopy at the Institute of Microtechnology of the University of Hannover allowed correlation of the macroscopic measurements to microscopic surface properties.
ASJC Scopus subject areas
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Materials Science(all)
- Surfaces, Coatings and Films
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In: Tribologie und Schmierungstechnik, Vol. 47, No. 2, 03.2000, p. 13-17.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Korrelation mikrotribologischer Eigenschaften mit dem makroskopischen Reibungsverhalten am Beispiel von Synchronisierungen
AU - Poll, G.
AU - Spreckels, M.
AU - Gronitzki, M.
PY - 2000/3
Y1 - 2000/3
N2 - In the traditional manually operated vehicle transmissions and in their modern automated versions, synchronizers are widely used to equalize gear speeds while shifting. For their proper functioning, the sliding friction between the cones must be carefully controlled. The macroscopic frictional characteristics of complete synchronizers were extensively studied on test benches at the Institute of Machine Elements, Engineering Design and Tribology at the University of Hannover, Germany, using SpiraxTM MA80W oil (tribosystem A) and ATF Dexron IID oil (tribosystem B). From these tests, conclusions were drawn on the contribution of boundary friction. Direct measurements required focusing on the microscopic real areas of contact with direct interaction of the surfaces. A combination of microscratch-testing and atomic force microscopy at the Institute of Microtechnology of the University of Hannover allowed correlation of the macroscopic measurements to microscopic surface properties.
AB - In the traditional manually operated vehicle transmissions and in their modern automated versions, synchronizers are widely used to equalize gear speeds while shifting. For their proper functioning, the sliding friction between the cones must be carefully controlled. The macroscopic frictional characteristics of complete synchronizers were extensively studied on test benches at the Institute of Machine Elements, Engineering Design and Tribology at the University of Hannover, Germany, using SpiraxTM MA80W oil (tribosystem A) and ATF Dexron IID oil (tribosystem B). From these tests, conclusions were drawn on the contribution of boundary friction. Direct measurements required focusing on the microscopic real areas of contact with direct interaction of the surfaces. A combination of microscratch-testing and atomic force microscopy at the Institute of Microtechnology of the University of Hannover allowed correlation of the macroscopic measurements to microscopic surface properties.
UR - http://www.scopus.com/inward/record.url?scp=0034162407&partnerID=8YFLogxK
M3 - Artikel
AN - SCOPUS:0034162407
VL - 47
SP - 13
EP - 17
JO - Tribologie und Schmierungstechnik
JF - Tribologie und Schmierungstechnik
SN - 0724-3472
IS - 2
ER -