The evaluation and comparison of the practical adhesion strength of biocompatible nano and micro thin films by fuzzy logic

The possibilities of using newly developed nano-and micro-thin films are intensively studied at the present time. Many research institutions are looking for ways to evaluate and compare mechanical properties of these films. One of the most important and frequently studied characteristics is practical adhesion. A very important method for evaluating the practical adhesion strength is scratch test method. However, the research teams usually use a method based on the non-uniform evaluation of adhesion of biocompatible thin films. We designed new evaluation method and procedure based on international standards and fuzzy rule based expert system in order to help to eliminate these problems. This article is aimed at showing the new possibility of using fuzzy logic and established standards for evaluating adhesion of biocompatible thin films in nano and micro dimensions. We used the fuzzy rule based expert system based on international standards to evaluate the often studied DLC biocompatible layers prepared by pulsed laser deposition.