Experimental characterization of the fiber angles of multiple curved laminate segments using prepreg-based carbon fiber reinforced polymers as a structure for a non-engaging bellows couplingFreitag (28.06.2019) 09:35 - 09:55 Uhr
This paper deals with the experimental characterization of the fiber angles of multiple curved laminate segments using prepreg-based carbon fiber reinforced polymers as a structure for a non-engaging bellows coupling. The main task of this shaft coupling is the torsionally stiff torque transmission and the compensation of axial displacement as well as the angular misalignment of the connecting shafts. The design concept of the multiple curved laminate segments enables a compensation capability for a CFRP bellows coupling. The multiple curved compensating structure can be manually draped by several cut segmentes using fabric prepregs. Furthermore, the intended fiber orientation of the fabric prepreg layers is ± 45° with respect to the rotation axis of the structure. For the experimental determination of the local fiber angles various CFRP specimens were defined with the width of one cut segment, whereby the number of layers varied. The CFRP specimens were manufactured under identical process parameters as far as possible. All investigations were based on cured CFRP specimens and these were divided into several measurement ranges. The measurements of the local fiber angles were performed with a robot-guided optical surface sensor and an optical stereomicroscope. Moreover, influences from the geometry of the compensating structure, the number of layers and the lay-down strategy were investigated regarding the local fiber angles. The measurement results were compared concerning the intended fiber orientation of ± 45° with respect to the rotation axis of the structure.