JOHANNES KEPLER UNIVERSITÄT LINZ Altenberger Straße 69 4040 Linz, Österreich www.jku.at DVR 0093696 Submitted by David Mittermayr Submitted at Institute of Polymeric Materials and Testing Supervisor Assoc. Prof. DI Dr.mont. Jörg Fischer Co-Supervisor DI Paul J. Freudenthaler, BSc July 2022 ENVIRONMENTAL STRESS CRACKING RESISTANCE OF HIPS UNDER CYCLIC LOADING USING CRACKED ROUND BAR SPECIMENS Master Thesis To obtain the academic degree of Diplom-Ingenieur In the Master’s program Polymer Technologies and Science