Investigation of crack propagation scatter in a gear tooth's rootPehan, Stanislav (Avtor) Kramberger, Janez (Avtor) Flašker, Jože (Avtor) Zafošnik, Boštjan (Avtor) fracture mechanicscrack initiationexperimental crack propagationnumerical crack propagationcrack locationgearboxtooth rootload distributionlinear elastic fracture mechanicsThis paper describes the problem of determining crack initiation location and its influence on crack propagation in a gear tooth's root. Three different load positions on the gear tooth's flank were considered for this investigation of crack initiation and propagation. A special test device was used for the single tooth test. It can be concluded from the measurements thata crack can be initiated at very different locations in a tooth's root and then propagate along its own paths. A numerical investigation into a crack initiation's position and its influences on its propagation were carried out within the framework of linear fracture mechanics. The influence of a tooth's load position, the geometry of the tooth's root, and the influence of nonparallel load distribution on the tooth's flank were considered when investigating the crack initiation's position. Results show that linear fracture mechanics can be used for determining crack propagation, if better initial conditions for crack initiation are considered.20082012-06-01 10:55:29Neznano27383UDK: 539.42:621.83-585.1COBISS_ID: 11211542ISSN pri članku: 0013-7944NUK URN: URN:SI:UM:DK:PYCHZFBGsl