| Περίληψη: | The idea of dematerialization emerged from the need of an eco-friendlier approach in the modern society. It characterizes the decline over time in weight of the materials used in industrial end products. Dematerialization may refer to different areas, such as economic and technology, but the basic concept embodies in one phrase. “Produce more with less”. The subject of this thesis is to identify and measure the knowledge inherent in several products and how the knowledge alteration through time, affects the products in terms of dematerialization. Specifically, a study on widely used products has been made in order to determine the way they changed through their life-timeline, the way they have dematerialised and if the knowledge included, where, as knowledge we assume the performance improvement through time, is growing as the material density decreases. Later, an analysis regarding knowledge is presented, following by an approach to knowledge content based on information entropy. The thesis is concluding with an attempt to identify measures of information content on a manufacturing system.
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