Print Email Facebook Twitter Thermoplastic composite stiffened structures in post-buckling Title Thermoplastic composite stiffened structures in post-buckling Author van Dooren, K.S. (TU Delft Group De Breuker) Contributor Bisagni, C. (promotor) Turteltaub, S.R. (promotor) Degree granting institution Delft University of Technology Date 2024-05-15 Abstract The aeronautical industry has set ambitious goals to reduce its environmental impact and become sustainable. Addressing rising emissions involves strategies such as reducing structural weight, due to its direct impact on fuel consumption, and the use of new materials and manufacturing techniques. Research and development on thermoplastic composites has seen an uprise due to their mechanical properties and sustainability benefits. It enables costeffective, innovative manufacturing techniques, less manufacturing waste and recyclability. This has led to the launch of several projects utilising thermoplastics, such as TAPAS 1 and 2 in The Netherlands, and the Clean Sky 2 project STUNNING. The TAPAS projects focussed on co-consolidated structures with the butt-joint technique, while STUNNING developed and manufactured a lower half of the multifunctional fuselage demonstrator, one of the world’s largest thermoplastic structures.This thesis investigates the post-buckling and skin-stringer separation behaviour of thermoplastic composite structures, with a combined experimental and numerical methodology. Allowing structures to buckle below the ultimate load can lead to considerable weight savings, however, the failure of composite structures in post-buckling is complex and usually catastrophic. This research intends to close the knowledge gap on thermoplastic composites in post-buckling, contributing to the goal of sustainable structures allowed to operate in post-buckling.... Subject Thermoplastic compositepost-bucklingskin-stringer separationstiffened panelsweldingbutt-jointtestingdamage tolerancefinite elementvirtual crack closure technique To reference this document use: https://doi.org/10.4233/uuid:b2f2e450-63dd-40cf-af09-bf67411e5980 ISBN 978-94-6473-489-8 Part of collection Institutional Repository Document type doctoral thesis Rights © 2024 K.S. van Dooren Files PDF PhD_Thesis_KvD_25424v2combined.pdf 137.01 MB PDF Propositions_KvD_29424.pdf 272.73 KB Close viewer /islandora/object/uuid:b2f2e450-63dd-40cf-af09-bf67411e5980/datastream/OBJ1/view