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Development of vacuum-assisted prepreg compression molding for production of automotive roof panels

机译：开发用于汽车顶板的真空辅助预浸料压制成型

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Prepreg compression molding (PCM) is well known for its high productivity among the manufacturing processes for carbon fiber reinforced plastic (CFRP) products. However, the disadvantages of CFRP products manufactured by the PCM process are related to defects involving micro grooves and voids. The purpose of this study is to develop a vacuum-assisted prepreg compression molding (VA-PCM) process to prevent these defects. To verify the application of the VA-PCM process, the mechanical properties of small-scaled specimens fabricated by the VA-PCM process were compared with the mechanical properties of specimens fabricated by the PCM process. The tests related to surface roughness, void content, tensile, and three-point bending were performed to evaluate the mechanical properties, including elastic modulus, tensile strength, bending stiffness, and energy absorption. Finally, automotive roof panels produced by each process were evaluated by a bending test to validate the VA-PCM process.
机译：在碳纤维增强塑料（CFRP）产品的制造过程中，预浸料压缩成型（PCM）以其高生产率而闻名。然而，通过PCM工艺制造的CFRP产品的缺点与涉及微沟槽和空隙的缺陷有关。这项研究的目的是开发一种真空辅助的预浸料压缩成型（VA-PCM）工艺，以防止这些缺陷。为了验证VA-PCM工艺的应用，将VA-PCM工艺制造的小尺寸样品的机械性能与PCM工艺制造的样品的机械性能进行了比较。进行了与表面粗糙度，空隙含量，拉伸和三点弯曲相关的测试，以评估机械性能，包括弹性模量，拉伸强度，弯曲刚度和能量吸收。最后，通过弯曲测试评估了每种工艺生产的汽车顶板，以验证VA-PCM工艺。

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