--- _id: '62302' abstract: - lang: eng text: The degree of crosslinking in unidirectional prepreg materials was investigated using differential scanning calorimetry to assess their curing behavior and thermal characteristics. To complement these measurements with a non-destructive, in-situ method, the propagation properties of guided acoustic waves in cured carbon fibre-reinforced epoxy plates were analysed. Correlations between the degree of crosslinking and acoustically determined mechanical properties were drawn to enable a future non-destructive evaluation approach. author: - first_name: Hayrettin full_name: Irmak, Hayrettin id: '75657' last_name: Irmak orcid: https://orcid.org/0009-0009-6267-2957 - first_name: Leander full_name: Claes, Leander id: '11829' last_name: Claes orcid: 0000-0002-4393-268X - first_name: Shuang full_name: Wu, Shuang id: '48039' last_name: Wu orcid: 0000-0001-8645-9952 - first_name: Thorsten full_name: Marten, Thorsten id: '338' last_name: Marten orcid: 0009-0001-6433-7839 - first_name: Thomas full_name: Tröster, Thomas id: '553' last_name: Tröster citation: ama: 'Irmak H, Claes L, Wu S, Marten T, Tröster T. Assessment of the influence of curing parameters on fibre reinforced epoxy composite properties using guided ultrasonic waves. In: 2025 International Congress on Ultrasonics. AMA Service GmbH; 2025:235–238. doi:10.5162/ultrasonic2025/c13-b3' apa: Irmak, H., Claes, L., Wu, S., Marten, T., & Tröster, T. (2025). Assessment of the influence of curing parameters on fibre reinforced epoxy composite properties using guided ultrasonic waves. 2025 International Congress on Ultrasonics, 235–238. https://doi.org/10.5162/ultrasonic2025/c13-b3 bibtex: '@inproceedings{Irmak_Claes_Wu_Marten_Tröster_2025, place={Paderborn}, title={Assessment of the influence of curing parameters on fibre reinforced epoxy composite properties using guided ultrasonic waves}, DOI={10.5162/ultrasonic2025/c13-b3}, booktitle={2025 International Congress on Ultrasonics}, publisher={AMA Service GmbH}, author={Irmak, Hayrettin and Claes, Leander and Wu, Shuang and Marten, Thorsten and Tröster, Thomas}, year={2025}, pages={235–238} }' chicago: 'Irmak, Hayrettin, Leander Claes, Shuang Wu, Thorsten Marten, and Thomas Tröster. “Assessment of the Influence of Curing Parameters on Fibre Reinforced Epoxy Composite Properties Using Guided Ultrasonic Waves.” In 2025 International Congress on Ultrasonics, 235–238. Paderborn: AMA Service GmbH, 2025. https://doi.org/10.5162/ultrasonic2025/c13-b3.' ieee: 'H. Irmak, L. Claes, S. Wu, T. Marten, and T. Tröster, “Assessment of the influence of curing parameters on fibre reinforced epoxy composite properties using guided ultrasonic waves,” in 2025 International Congress on Ultrasonics, Paderborn, Germany, 2025, pp. 235–238, doi: 10.5162/ultrasonic2025/c13-b3.' mla: Irmak, Hayrettin, et al. “Assessment of the Influence of Curing Parameters on Fibre Reinforced Epoxy Composite Properties Using Guided Ultrasonic Waves.” 2025 International Congress on Ultrasonics, AMA Service GmbH, 2025, pp. 235–238, doi:10.5162/ultrasonic2025/c13-b3. short: 'H. Irmak, L. Claes, S. Wu, T. Marten, T. Tröster, in: 2025 International Congress on Ultrasonics, AMA Service GmbH, Paderborn, 2025, pp. 235–238.' conference: end_date: 2025-09-25 location: Paderborn, Germany name: 2025 ICU PADERBORN - 9th International Congress on Ultrasonics start_date: 2025-09-21 date_created: 2025-11-25T12:23:07Z date_updated: 2026-03-23T10:31:53Z department: - _id: '49' - _id: '149' - _id: '321' doi: 10.5162/ultrasonic2025/c13-b3 keyword: - fibre-reinforced polymers - differential scanning calorimetry - degree of crosslinking - guided waves - ultrasound language: - iso: eng page: 235–238 place: Paderborn publication: 2025 International Congress on Ultrasonics publication_identifier: isbn: - 978-3-910600-08-9 publication_status: published publisher: AMA Service GmbH quality_controlled: '1' status: public title: Assessment of the influence of curing parameters on fibre reinforced epoxy composite properties using guided ultrasonic waves type: conference user_id: '338' year: '2025' ... --- _id: '55743' abstract: - lang: eng text: The use of hybrid materials as a combination of fibre-reinforced plastic (FRP) and metal is of great interest in order to meet the increasing demands for sustainability, efficiency, and emission reduction based on the principle of lightweight design. These two components can therefore be joined using the intrinsic joining technique, which is formed by curing the matrix of the FRP component. In this study, for the hybrid joint, unidirectionally pre-impregnated semi-finished products (prepregs) with duromer matrix resin and micro-alloyed HC340LA steel were used. In order to conduct a detailed investigation, the damage mechanisms of intrinsically produced fibre metal laminates (FMLs), a new clamping device, and a novel pressing tool were designed and put into operation. The prepregs were prestressed by applying a preloading force using a specially designed prestressing frame. Hybrid specimens were then produced and subjected to nanoindentation and a shear tensile test. In particular, the effect of the residual stress state by varying the defined prestressing force on the damage mechanisms was studied. The results showed that no fracture patterns occurred in the interface of the specimens without preloading as a result of curing at 120 °C, whereas specimens with preloading failed at the boundary layer in the tensile range. Nevertheless, all specimens cured at 160 °C failed at the boundary layer in the tensile range. Furthermore, it was proven that the force and displacement of the preloaded specimens were promisingly higher than those of the unpreloaded specimens. article_number: '316' article_type: original author: - first_name: Hayrettin full_name: Irmak, Hayrettin id: '75657' last_name: Irmak orcid: https://orcid.org/0009-0009-6267-2957 - first_name: Steffen Rainer full_name: Tinkloh, Steffen Rainer id: '72722' last_name: Tinkloh - first_name: Thorsten full_name: Marten, Thorsten id: '338' last_name: Marten orcid: 0009-0001-6433-7839 - first_name: Thomas full_name: Tröster, Thomas id: '553' last_name: Tröster citation: ama: Irmak H, Tinkloh SR, Marten T, Tröster T. Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure. Journal of Composites Science. 2024;8(8). doi:10.3390/jcs8080316 apa: Irmak, H., Tinkloh, S. R., Marten, T., & Tröster, T. (2024). Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure. Journal of Composites Science, 8(8), Article 316. https://doi.org/10.3390/jcs8080316 bibtex: '@article{Irmak_Tinkloh_Marten_Tröster_2024, title={Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure}, volume={8}, DOI={10.3390/jcs8080316}, number={8316}, journal={Journal of Composites Science}, publisher={MDPI AG}, author={Irmak, Hayrettin and Tinkloh, Steffen Rainer and Marten, Thorsten and Tröster, Thomas}, year={2024} }' chicago: Irmak, Hayrettin, Steffen Rainer Tinkloh, Thorsten Marten, and Thomas Tröster. “Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure.” Journal of Composites Science 8, no. 8 (2024). https://doi.org/10.3390/jcs8080316. ieee: 'H. Irmak, S. R. Tinkloh, T. Marten, and T. Tröster, “Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure,” Journal of Composites Science, vol. 8, no. 8, Art. no. 316, 2024, doi: 10.3390/jcs8080316.' mla: Irmak, Hayrettin, et al. “Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure.” Journal of Composites Science, vol. 8, no. 8, 316, MDPI AG, 2024, doi:10.3390/jcs8080316. short: H. Irmak, S.R. Tinkloh, T. Marten, T. Tröster, Journal of Composites Science 8 (2024). date_created: 2024-08-23T06:47:27Z date_updated: 2026-03-23T10:31:09Z department: - _id: '9' - _id: '321' - _id: '149' doi: 10.3390/jcs8080316 intvolume: ' 8' issue: '8' keyword: - CFRP - prestressing - fibre metal laminate - interface - prepreg - shear tensile test language: - iso: eng publication: Journal of Composites Science publication_identifier: issn: - 2504-477X publication_status: published publisher: MDPI AG quality_controlled: '1' status: public title: Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure type: journal_article user_id: '338' volume: 8 year: '2024' ...