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Size Effect and Notch Size Effect in Metal Fatigue
(Lappeenranta University of Technology, 1999-08-27)
It is a well known phenomenon that the constant amplitude fatigue limit of a large component is lower than the fatigue limit of a small specimen made of the same material. In notched components the opposite occurs: the ...
A Practical Micro Mechanical Model Based Local Approach Methodology for the Analysis of Ductile Fracture of Welded T-Joints
(Lappeenranta University of Technology, 1994-03-04)
This thesis concentrates on developing a practical local approach methodology based on micro mechanical models for the analysis of ductile fracture of welded joints. Two major problems involved in the local approach, namely ...
The Effect of Operational Disturbances on Reliability and Operation Time Distribution of NCmachine Tools in FMS
(Lappeenranta University of Technology, 1997-12-12)
This thesis concentrates on studying the operational disturbance behavior of machine tools integrated into FMS. Operational disturbances are short term failures of machine tools which are especially disruptive to unattended ...
A Topological Approach to Fuzzy Sets
This thesis presents a topological approach to studying fuzzy setsby means of modifier operators. Modifier operators are mathematical models, e.g., for hedges, and we present briefly different approaches to studying modifier ...
Design and analysis of a transversal-flux switched-reluctance-linear-machine pole-pair
(Lappeenranta University of Technology, 1999-12-18)
The Switched Reluctance technology is probably best suited for industrial low-speed or zerospeed applications where the power can be small but the torque or the force in linear movement cases might be relatively high. ...