Title of the thesis:Metric-Based Modularization of Products in a Circular Economy - Meta-Model and Framework for Customer-Centered Engineering Process Doktorand: Dan Lennartsson Forskarutbildningsämne: Production Systems Opponent: Professor Dag Henrik Bergsjö, Chalmers University of Technology Examinator: Associate Professor Malin Löfving, School of Engineering Huvudhandledare: Professor Ulf Seigerroth, School of Engineering