自動化三維光纖敷設的連續過程監控與有限元仿真
由于纖維貼片技術的不斷提高和擴展，Cevotec公司目前宣布了新的發展，特別是針對航空航天工業的需求。目前，專家們主要致力于光纖貼片自動三維布設的連續過程監控和有限元仿真。
Cevotec公司的Samba系列光纖貼片生產系統配備了許多傳感器，用于監測所有相關工藝參數，從而能夠在生產過程中進行持續的質量控制和監測。
Cevotec的席技術官費利克斯·米切爾(Felix Michl)報告說：“特別是在航空航天行業，在制造過程中不能原諒錯誤的是，今天半自動生產的復合部件要經過單獨的單元測試，以確保規格符合要求，從而達到大程度的飛行安全。”
生產系統的傳感器與光纖貼片一起工作，監控生產過程的關鍵參數：從剪裁紙帶線軸到壓力控制的纖維沉積。特別是，一個特殊的視覺系統在進一步處理之前檢查每個單獨的貼片的質量和尺寸精度，以保證100%的輸入材料符合規格。這大大減少了終檢驗所需的工作量，并降低了所生產零件的不合格率。
對生產數據進行分析，并與以前處理過的補丁數據庫進行比較。偏差可以被迅速發現，系統采取適當的糾正措施完全自動化。
Michl繼續說：“結合機器學習的概念，隨著數據庫中每個補丁的處理，算法變得更加智能。”
根據這些數據，可以小化工藝公差規格，這反過來又保證了持續的高放置質量。單個單元測試所需的時間和成本大大減少。
加速生產，特別是開發過程的額外潛力為Cevotec提供了新的軟件擴展：一種用于建模軟件HyperMesh的插件，HyperMesh是的FEA預處理器之一。
Cevotec的EVP博士Nven Majic解釋說：“基于補丁藝術家定義的有關補丁的幾何、位置和排列的數據，藝術家工作室插件自動生成HyperMesh中貼片層壓板的詳細圖像。”
每個斑塊的等高線被用來模擬纖維的方向和重疊區域?；阡亴拥臍んw模型以及實體和粘聚帶模型都可以用于分析，可以在子層和斑塊層進行分析。
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.
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