Fatigue fracture of fiber reinforced polymer honeycomb composite sandwich structures for gas turbine engines

6th International Conference on Fracture Fatigue and Wear

Nikhamkin, Mikhail^1 ; Sazhenkov, Nikolai^1 ; Samodurov, Danil^1

Perm National Research Polytechnic University, 29 Komsomolsky Prospekt, Perm krai, Perm

614990, Russia^1

关键词: Bending fatigue tests;    Comparative analysis;    Fatigue fracture;    Fiber reinforced polymers;    Honeycomb composite;    Internal damages;    Manufacturing flaws;    X-ray observations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/843/1/012029/pdf
DOI  :  10.1088/1742-6596/843/1/012029

来源: IOP

【 摘 要 】

Fiber reinforced polymer honeycomb composite sandwich structures are commonly used in different industries. In particular, they are used in the manufacture of gas turbine engines. However, fiber reinforced polymer honeycomb composite sandwich structures often have a manufacturing flaw. In theory, such flaws due to their rapid propagation reduce the durability of fiber reinforced polymer honeycomb composite sandwich structures. In this paper, bending fatigue tests of fiber reinforced polymer honeycomb composite sandwich structures with manufacturing flaws were conducted. Comparative analysis of fatigue fracture of fiber reinforced polymer honeycomb composite sandwich specimens was conducted before and after their bending fatigue tests. The analysis was based on the internal damage X-ray observation of fiber reinforced polymer honeycomb composite sandwich specimens.