自动化三维光纤敷设的连续过程监控与有限元仿真_国际市场_市场行情__复合材料信息网
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自动化三维光纤敷设的连续过程监控与有限元仿真
发布日期:2018-10-30  来源:JEC  浏览次数:510
 
   由于纤维贴片技术的不断提高和扩展,Cevotec公司目前宣布了最新的发展,特别是针对航空航天工业的需求。目前,专家们主要致力于光纤贴片自动三维布设的连续过程监控和有限元仿真。
  cevotec_4
  Cevotec公司的Samba系列光纤贴片生产系统配备了许多传感器,用于监测所有相关工艺参数,从而能够在生产过程中进行持续的质量控制和监测。
  Cevotec的首席技术官费利克斯·米切尔(Felix Michl)报告说:“特别是在航空航天行业,在制造过程中不能原谅错误的是,今天半自动生产的复合部件要经过单独的单元测试,以确保规格符合要求,从而达到最大程度的飞行安全。”
  生产系统的传感器与光纤贴片一起工作,监控生产过程的关键参数:从剪裁纸带线轴到压力控制的纤维沉积。特别是,一个特殊的视觉系统在进一步处理之前检查每个单独的贴片的质量和尺寸精度,以保证100%的输入材料符合规格。这大大减少了最终检验所需的工作量,并降低了所生产零件的不合格率。
  对生产数据进行分析,并与以前处理过的补丁数据库进行比较。偏差可以被迅速发现,系统采取适当的纠正措施完全自动化。
  Michl继续说:“结合机器学习的概念,随着数据库中每个补丁的处理,算法变得更加智能。”
  根据这些数据,可以最小化工艺公差规格,这反过来又保证了持续的高放置质量。单个单元测试所需的时间和成本大大减少。
  加速生产,特别是开发过程的额外潜力为Cevotec提供了最新的软件扩展:一种用于建模软件HyperMesh的插件,HyperMesh是领先的FEA预处理器之一。
  Cevotec的EVP博士Nven Majic解释说:“基于补丁艺术家定义的有关补丁的几何、位置和排列的数据,艺术家工作室插件自动生成HyperMesh中贴片层压板的详细图像。”
  每个斑块的等高线被用来模拟纤维的方向和重叠区域。基于铺层的壳体模型以及实体和粘聚带模型都可以用于分析,可以在子层和斑块层进行分析。
 
原文如下:
  As a result of constantly enhancing and extending the Fiber Patch Placement technology, Cevotec currently announced the latest developments particularly for the requirements of the aerospace industry. Now the specialists focus on continuous process monitoring and FE simulation for automated 3D fiber layup with Fiber Patch Placement.
  Continuous process monitoring and FE simulation for automated 3D fiber layup
  Equipped with numerous sensors monitoring all relevant process parameters, Fiber Patch Placement production systems of Cevotec’s Sambaseries allow for a continuous quality control and monitoring during the production process.
  “Particularly in the aerospace industry, an industry that does not forgive mistakes in manufacturing, the composite parts produced in today’s semi-automated production are subject to individual unit tests to ensure specification compliance and therefore a maximum degree of flight safety,” reports Felix Michl, CTO at Cevotec.
  Working with Fiber Patch Placement, sensors of the production system monitor key parameters of the production process: from cutting the patches from a tape spool to pressure-controlled fiber deposition. In particular, a special vision system checks each individual patch for quality and dimensional accuracy before further processing in order to guarantee that 100% of the input material is according to specifications. This reduces the required effort for the final inspection enormously and lowers the non-pass rate of produced parts.
  Production data are analyzed and compared with a database of previously processed patches. Deviations can be promptly detected, and the system takes appropriate corrective measures fully automated.
  “Incorporating machine learning concepts, the algorithms become more intelligent with each patch processed in the database,” Michl continues.
  On the basis of this data, process tolerance specifications can be minimized, which in turn guarantees a consistently high placement quality. The time and cost required for single unit tests are significantly reduced.
  Additional potential to accelerate production and especially development processes offers Cevotec’s latest software extension: A plug-in for the modeling software HyperMesh, one of the leading FEA preprocessors.
  “based on the data defined in PATCH ARTIST regarding geometry, position and alignment of the patches, the ARTIST STUDIO plug-in automatically generates a detailed image of the patch laminate in HyperMesh,” explains Cevotec’s EVP Dr. Neven Majic.
  The contour of each individual patch is used to model fiber orientations and overlap areas. Ply-based shell models as well as solid and cohesive zone models can be used for analysis, which can be performed on both sublayer and patch level.
  More information:
 
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