Influence of Layup Sequence on the Surface Accuracy of Carbon Fiber Composite Space Mirrors

Yang, Zhiyong; Liu, Qingnian; Zhang, Boming; Xu, Liang; Tang, Zhanwen; Xie, Yaoqin

doi:10.1007/s10443-018-9690-4

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…Furthermore, the misalignment of ply angle will have an important influence on the structural performance of parts. [6][7][8] Hence, to ensure the accuracy of the layer angle and position, the laser projection equipment is used for positioning while adding the scribe lines of local reinforcement layer on the tooling surface, as shown in Figure 4. Since the outer surface of the root skin is an aerodynamic surface, a process cover plate (soft mold) is required to ensure the smooth and flat outer surface of the parts when male mold tooling is used to manufacture the parts.…”

Section: Raw Materials Of the "L" Type Root Skin For Leadingedge Mobilmentioning

confidence: 99%

“…Furthermore, the misalignment of ply angle will have an important influence on the structural performance of parts. 6 –8 Hence, to ensure the accuracy of the layer angle and position, the laser projection equipment is used for positioning while adding the scribe lines of local reinforcement layer on the tooling surface, as shown in Figure 4.…”

Section: Molding Process Improvement Of “λ” Type Root Skin For Leading-edge Mobile Flapmentioning

confidence: 99%

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The research on precise forming technology of “λ” type composite skin

Guo

et al. 2021

Composites and Advanced Materials

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With the application of “ λ” type composite skin becoming more and more extensive and diversified, its precise forming technology is also widely concerned. This article mainly solves the quality problems of “ λ” type corner area, such as delamination dispersion and surface wrinkle, which exist in reality commonly in the manufacturing process. The prepreg is heated along the corner area of the tooling to solve the problem that prepreg is difficult to be compacted due to the large modulus of carbon fiber in “ λ” type corner area. Furthermore, two precompaction tests are creatively increased at 16 layers (middle layer) and 32 layers (last layer) for the thick structure, respectively, to ensure the compaction effect of the blank. In addition, combined with the characteristics of highly elastic rubber and carbon fiber-reinforced materials, a new type of soft mold structure with proper flexibility and good stiffness is proposed innovatively through the reasonable placement of carbon fiber-reinforced materials and the setting of exhaust holes according to the structure characteristics of “ λ” type root skin. Through further process verification, it is shown that the improved process has effectively solved the problems of wrinkles and internal delamination at the sharp corners of parts and realized zero-defect manufacturing of “ λ” type root skin for the first time.

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Section: Raw Materials Of the "L" Type Root Skin For Leadingedge Mobilmentioning

confidence: 99%