自動(dòng)化三維光纖敷設(shè)的連續(xù)過程監(jiān)控與有限元仿真
日期：2018-10-30
來源：
瀏覽：960
由于纖維貼片技術(shù)的不斷提高和擴(kuò)展，Cevotec公司目前宣布了新的發(fā)展，特別是針對航空航天工業(yè)的需求。目前，專家們主要致力于光纖貼片自動(dòng)三維布設(shè)的連續(xù)過程監(jiān)控和有限元仿真。
Cevotec公司的Samba系列光纖貼片生產(chǎn)系統(tǒng)配備了許多傳感器，用于監(jiān)測所有相關(guān)工藝參數(shù)，從而能夠在生產(chǎn)過程中進(jìn)行持續(xù)的質(zhì)量控制和監(jiān)測。
Cevotec的席技術(shù)官費(fèi)利克斯·米切爾(Felix Michl)報(bào)告說：“特別是在航空航天行業(yè)，在制造過程中不能原諒錯(cuò)誤的是，今天半自動(dòng)生產(chǎn)的復(fù)合部件要經(jīng)過單獨(dú)的單元測試，以確保規(guī)格符合要求，從而達(dá)到大程度的飛行安全。”
生產(chǎn)系統(tǒng)的傳感器與光纖貼片一起工作，監(jiān)控生產(chǎn)過程的關(guān)鍵參數(shù)：從剪裁紙帶線軸到壓力控制的纖維沉積。特別是，一個(gè)特殊的視覺系統(tǒng)在進(jìn)一步處理之前檢查每個(gè)單獨(dú)的貼片的質(zhì)量和尺寸精度，以保證100%的輸入材料符合規(guī)格。這大大減少了終檢驗(yàn)所需的工作量，并降低了所生產(chǎn)零件的不合格率。
對生產(chǎn)數(shù)據(jù)進(jìn)行分析，并與以前處理過的補(bǔ)丁數(shù)據(jù)庫進(jìn)行比較。偏差可以被迅速發(fā)現(xiàn)，系統(tǒng)采取適當(dāng)?shù)募m正措施完全自動(dòng)化。
Michl繼續(xù)說：“結(jié)合機(jī)器學(xué)習(xí)的概念，隨著數(shù)據(jù)庫中每個(gè)補(bǔ)丁的處理，算法變得更加智能。”
根據(jù)這些數(shù)據(jù)，可以小化工藝公差規(guī)格，這反過來又保證了持續(xù)的高放置質(zhì)量。單個(gè)單元測試所需的時(shí)間和成本大大減少。
加速生產(chǎn)，特別是開發(fā)過程的額外潛力為Cevotec提供了新的軟件擴(kuò)展：一種用于建模軟件HyperMesh的插件，HyperMesh是的FEA預(yù)處理器之一。
Cevotec的EVP博士Nven Majic解釋說：“基于補(bǔ)丁藝術(shù)家定義的有關(guān)補(bǔ)丁的幾何、位置和排列的數(shù)據(jù)，藝術(shù)家工作室插件自動(dòng)生成HyperMesh中貼片層壓板的詳細(xì)圖像。”
每個(gè)斑塊的等高線被用來模擬纖維的方向和重疊區(qū)域。基于鋪層的殼體模型以及實(shí)體和粘聚帶模型都可以用于分析，可以在子層和斑塊層進(jìn)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:
English
簡體中文
