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基于工業(yè)CT的水泵葉輪三維實(shí)體重建
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江蘇省科技支撐計(jì)劃資助項(xiàng)目(BE2010116);江蘇高校優(yōu)勢(shì)學(xué)科建設(shè)工程資助項(xiàng)目(PAPD);江蘇大學(xué)高級(jí)人才啟動(dòng)基金資助項(xiàng)目(1281440007)


3D Model Rebuilding of Pumps Impeller Based on ICT
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    摘要:

    為實(shí)現(xiàn)水泵葉輪三維實(shí)體重建,利用工業(yè)CT獲取含有葉輪原型內(nèi)部構(gòu)造信息的高精度斷層切片圖像,并編程實(shí)現(xiàn)切片圖像RAW數(shù)據(jù)格式到BMP格式的轉(zhuǎn)換。在VC++ 6.0平臺(tái)上,應(yīng)用MFC、OpenGL、ADO等,通過(guò)斷層圖像預(yù)處理、二維圖像處理及二維幾何處理等數(shù)字圖像處理技術(shù)去除圖像噪聲并顯著提高了圖像清晰度;編程完成了葉輪斷層圖像序列表面輪廓的三角面片三維重建,最終實(shí)現(xiàn)以半邊結(jié)構(gòu)邊界模型(B—Rep)為基礎(chǔ)的葉輪三維實(shí)體轉(zhuǎn)換。在開(kāi)發(fā)的葉輪逆向三維重建軟件ReImpeller3D上運(yùn)行的重建實(shí)例表明,該重建方法能為水泵葉輪的數(shù)值模擬、有限元分析、快速成形、產(chǎn)品數(shù)字化加工制造以及優(yōu)化設(shè)計(jì)等提供直接的幾何模型支持,具有一定的可行性與實(shí)用性。

    Abstract:

    In order to rebuild 3D models of pump impeller, ICT fault images in high quality of two typical impellers were collected at first, and format conversion from RAW to BMP was fulfilled though a developed program. On the platform of VC++ 6.0, MFC, OpenGL, ADO were used, and with the technologies of fault images pre-processing, 2D image processing and 2D geometric processing, noise to these images was removed and image definition was greatly improved. Development tools like 3D model in surface were reconstructed, transformation from surface model to solid model was also realized by triangular facets and B—Rep model. Living rebuilt examples fulfilled on ReImpeller3D showed that the way of reconstruction can supply geometrical models for numerical simulation, FEM, RP, digitized production, and optimization design, so it is feasible to use ICT fault images to rebuild 3D models of the impellers.

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蔣小平,施衛(wèi)東,李偉,劉厚林,談明高.基于工業(yè)CT的水泵葉輪三維實(shí)體重建[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(11):85-88,67. Jiang Xiaoping, Shi Weidong, Li Wei, Liu Houlin, Tan Minggao.3D Model Rebuilding of Pumps Impeller Based on ICT[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(11):85-88,67.

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