TY - JOUR

T1 - Einfluss von Beschädigungen der Gegenlauffläche auf das tribologische Verhalten von Radialwellendichtringen und Verfahren zur messtechnischen Detektion und Charakterisierng

AU - Poll, Gerhard

AU - Reithmeier, Eduard

PY - 2011/3

Y1 - 2011/3

N2 - An experimental study was made of two types of surface damage (dents and scratches) with respect to their influence on the sealing function of radial shaft seals. Optical measurement evaluation of these defects shows that the depth and orientation of the surface damage are decisive for the sealing function of the radial shaft seals. The damage from dents depended on their depth. Depths of over 20 μm always led to leakage. The shafts where all dents had breadths of over 1,000 μm did not seal. The damage from scratches depended on their orientation. The 5W-30 engine oil "Fuchs Titan GT-1" was the test oil. It was used at 90°C. For the optical studies the functionality of a pre-damaged shaft-seal system with hollow shaft of quartz glass was used. The scratches were prepared by laser at 16-40 μm depths. A practical multi-sensor system to register stochastic defects on the radial shaft seals was developed. For the quantitative registration of long wave shape variation (waviness) and parallel to the detection short wave shape variations (dents or scratches) a scattered light sensor was used. A chromatographic sensor was used for quantitative registration of short wave shape variations. Both sensors were placed on a coordination measurement device. The multi-sensor system gave a secure detection and quantitative determination of stochastic defect critical dimensions on the shaft surfaces. The resolution and measurement speed of the system depend on a mechanical sensor positioning system. The discussion covers introduction; statement of the problem and purpose of the study; state of the art; experimental equipment; the tests (types of damage studied; test environment and parameters; multisensory system to register stochastic structures; study results (standardized Brinell ball and Vickers pyramid hardness; mechanical scratches; laser scratches; test evaluation from the horizontally positioned test stand; leaks from various damage types; optical study of the seal contact); and summary.

AB - An experimental study was made of two types of surface damage (dents and scratches) with respect to their influence on the sealing function of radial shaft seals. Optical measurement evaluation of these defects shows that the depth and orientation of the surface damage are decisive for the sealing function of the radial shaft seals. The damage from dents depended on their depth. Depths of over 20 μm always led to leakage. The shafts where all dents had breadths of over 1,000 μm did not seal. The damage from scratches depended on their orientation. The 5W-30 engine oil "Fuchs Titan GT-1" was the test oil. It was used at 90°C. For the optical studies the functionality of a pre-damaged shaft-seal system with hollow shaft of quartz glass was used. The scratches were prepared by laser at 16-40 μm depths. A practical multi-sensor system to register stochastic defects on the radial shaft seals was developed. For the quantitative registration of long wave shape variation (waviness) and parallel to the detection short wave shape variations (dents or scratches) a scattered light sensor was used. A chromatographic sensor was used for quantitative registration of short wave shape variations. Both sensors were placed on a coordination measurement device. The multi-sensor system gave a secure detection and quantitative determination of stochastic defect critical dimensions on the shaft surfaces. The resolution and measurement speed of the system depend on a mechanical sensor positioning system. The discussion covers introduction; statement of the problem and purpose of the study; state of the art; experimental equipment; the tests (types of damage studied; test environment and parameters; multisensory system to register stochastic structures; study results (standardized Brinell ball and Vickers pyramid hardness; mechanical scratches; laser scratches; test evaluation from the horizontally positioned test stand; leaks from various damage types; optical study of the seal contact); and summary.

UR - http://www.scopus.com/inward/record.url?scp=80052415754&partnerID=8YFLogxK

M3 - Artikel

AN - SCOPUS:80052415754

VL - 58

SP - 16

EP - 22

JO - Tribologie und Schmierungstechnik

JF - Tribologie und Schmierungstechnik

SN - 0724-3472

IS - 2

ER -