Institute for Composite Materials, Kaiserslautern, Germany

Short Biography
K. Friedrich graduated in “Mechanical Engineering” and earned 1978 his PhD degree in “Materials Science” at the Ruhr-University Bochum in Germany. He was a Visiting Assistant Professor with the Center for Composite Materials, University of Delaware, USA, and worked as a Professor for Polymers and Composites at the Technical University Hamburg-Harburg, Germany. In 1990, he became Research Director at the Institute for Composite Materials (IVW), University of Kaiserslautern, Germany.  He acts also as a Scientific Board Member of various international journals in the fields of materials science, composites, and tribology, and he has published more than 800 journal/conference papers, and several books related to fracture mechanics and tribology of polymer (nano)composites.


Sliding Wear Performance of Dry and Oil Impregnated Black-Fiber Palm Wood

The sliding wear of black-fiber palm wood was first investigated under dry conditions against smooth steel. Tests were carried out in two different configurations, i.e. pin on disc and ring on plate. In both cases, the transverse, in plane fiber orientation resulted in the highest values of friction coefficient and specific wear rate. The normal and parallel fiber orientations showed a better performance. In all cases, the coefficient of friction was rather high (average range between 0.4 to 0.7) whereas the specific wear rates varied between 10-6 to 10-5 mm3/Nm. The latter are comparable to those of short fiber reinforced thermoplastics. A following impregnation in various oils reduced the wear rates, and the friction coefficients went down to values between 0.1 and 0.3. The different efficiency of the various oils was discussed.













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