The thesis conducted at the Faculty of Aerospace Engineering in Delft, Netherlands, focuses on enhancing the safety of liquid hydrogen tanks when used as aircraft fuel. The study aims to monitor these tanks closely to ensure safe operation, considering factors like cryogenic properties and hydrogen embrittlement. The research primarily explores the feasibility of employing acoustic emission-based structural health monitoring techniques to identify and locate simulated damage within a metal double-walled vacuum insulated tank. The innovative aspect of the study is the emphasis on utilizing outside-the-tank sensor placement for this purpose. To conduct experiments, a metal tank with fixed and flexible support was halved to access the inner tank. Pencil lead break tests were then conducted on both walls of the tank, with the resulting data recorded by PZT sensors. The main goal was to evaluate the accuracy of localizing damage using acoustic emissions. Supervised by Nan Yue, the thesis signifies a significant step towards ensuring the safety and reliability of liquid hydrogen storage in the aviation sector.