Nettig, DoranDoranNettigRath, Jan-ErikJan-ErikRathTiedemann, Jon OveJon OveTiedemannSchüppstuhl, ThorstenThorstenSchüppstuhl2026-07-312026-07-312026-07-20Composites Part A Applied Science and Manufacturing 210: 110096 (2026)https://hdl.handle.net/11420/64137Continuous fiber reinforced thermoplastics (CFRTP) combine excellent mechanical properties with recyclability, weldability, and reshapeability. However, their conventional processing requires part-specific tooling, imposing high initial cost and lead times. This limits their applicability to small lot sizes. A flexible alternative could be Incremental Sheet Forming (ISF), which creates parts by moving a small, part-agnostic tool along numerically controlled paths. While ISF is established for metals, its adoption for CFRTP started only recently. In particular, the Double-Sided Incremental Forming (DSIF) process, which employs a second forming tool to improve quality and flexibility, has not been investigated in detail for CFRTP. Therefore, this work presents the first extensive study into DSIF of CFRTP, with a focus on establishing a baseline process. The conducted process characterization includes temperature and force assessments. Forming strategies were compared by forming cone frusta, yielding a multi-stage strategy combining spiral and fiber-following toolpaths, which produced wrinkle-free parts with good accuracy. Micrographs indicate good consolidation for the tested material and process conditions. Furthermore, a preliminary process parameter analysis, including temperature, support force, and step size, was conducted. The results indicate that DSIF can become a viable, flexible manufacturing route for CFRTP components and provide a sound foundation for future research.en1878-58402026Elsevierhttps://creativecommons.org/licenses/by/4.0/CompositeFiber reinforced plasticIncremental sheet formingManufacturing processTechnology::629: Other Branches::629.1: AviationJournal Article10.1016/j.compositesa.2026.11009610.15480/882.17702