Berlin 2024 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 21: Poster II
CPP 21.5: Poster
Dienstag, 19. März 2024, 18:00–20:00, Poster E
Improvement of Self Healing Functions of Composites via Microvascular Channels — •Eray Kostur1, Merve Ozkutlu Demirel1, and Necdet Geren2 — 1Turkish Aeorspace, Ankara, Turkey — 2Cukurova University, Adana, Turkey
Carbon fiber-reinforced polymer (CFRP) composites having high specific strength and modulus, are highly convenient for aerospace and automotive applications which require light-weight and high strength. However, the usage of CFRP is limited by their low crack resistance and poor off-axis strength causing material damage as a result of static and dynamic effects over its service time. Besides, prediction of the failure due to local damages are not reliable so far. This study aims to provide a composite structure with self-healing features through a novel microvascular channel mechanism while preserving its mechanical properties and as a result, to repair micro-sized cracks that occur in its structure. The effect of different channel configurations on mechanical properties is evaluated with mechanical tests. A self- healing agent was injected into microvascular channels and the reaction was triggered by a catalyst which is distributed into matrix, as the crack propagates through the channels. An enhancement of approximately 25 % is observed in the displacement values.
Keywords: Self-healing; Microvascular channels; Carbon fiber reinforced polymers; Thermosetting; Self-repair