National Symposium of Theory of Machines (UMTS) is being held in Turkey since 1984. Each symposium is organized in a different university in Turkey and we will have the 17th of this event in Izmir Institute of Technology in 2015. The main aims of UMTS are to gather researchers together and build up a Turkish literature in theory of machines area. Unlike previous UMTS organizations, 17th UMTS will have a large-scale international participation, hence the event is re-named as TrC IFToMM Symposium on Theory of Machines and Mechanisms (TrISToMM). The symposium languages will be Turkish and English so that we keep the tradition of publishing in Turkish and also promote international level discussion and colloboration under the patronage of IFToMM (International Federation for the Promotion of Mechanism and Machine Science).