Dimensional analysis for abrasive wear behaviour of various polyamides.

Autor: J. J. Rajesh, J. Bijwe
Zdroj: Tribology Letters; Mar2005, Vol. 18 Issue 3, p331-340, 10p
Abstrakt: Abstract Abrasive wear behaviour of a series of polyamides (PAs) with different methylene to amide ratio (CH2/CONH) was analysed using Buckingham’s dimensional analysis method and efforts for quantifying the contribution of the material properties towards the abrasive wear performance were also made. In order to calculate the wear coefficient (K), the data based on the experimental wear volume, operating parameters and the material properties were fitted into the non-linear wear equation. The non-linear wear equation was derived based on pi theorem using the dimensional analysis technique. The wear coefficient K decreased as load and abrasive grit size were increased. The theoretical and experimental wear volume correlated well in most of the cases. Among the selected material properties, the fracture stress (s*) and the critical crack length (C*) were found to be the most important parameters, which controlled the abrasive wear behaviour of PAs. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index