Monitoring structural aspects of pastes undergoing continuous extrusion using signal processing of pressure data

B.D.Russell; D.I.Wilson; S.BlackburnD.I.Wilson

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Monitoring structural aspects of pastes undergoing continuous extrusion using signal processing of pressure data

机译：贴的结构方面进行监控使用信号处理的连续挤压压力数据

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On-line monitoring of fluctuations in pressure measurements recorded near the die offer significant potential for tracking paste quality in continuous paste extrusion systems.Several signal processing techniques,developed previously for ram extrusion applications,have been applied to a continuous,twin-screw paste extruder processing a clay-based detergent paste.These techniques include the removal of corrupting equipment noise; outlier analysis to detect pockets of entrapped air and large agglomerates in the paste; and quantification of the signal noise,either by fractal analysis or standard error analysis.The signal noise is related to the overall homogeneity of the paste,which can be influenced by factors including dry powder mixing,particle size distribution and paste hold-up within the barrel.The signal processing results are compared with physical measures of extrudate quality,and show a good correlation.Fractal analysis proved a less suitable quantitative tool than the other approaches for this application.The methods are compared with traditional statistical process control techniques and future application is discussed.

机译：波动压力的在线监测附近的测量记录模具的报价巨大的潜力来跟踪粘贴质量在连续粘贴挤压系统。信号处理技术,开发了对于ram挤出应用程序,已经被应用一个连续,双螺杆挤出机粘贴处理一个面膜泥洗涤剂粘贴。技术包括消除腐败设备噪音;口袋的裹入气和大团聚体在粘贴;噪音,通过分形分析或标准误差分析。总体的同质性粘贴,可以影响因素包括干粉混合、粒度分布和粘贴滞留在桶内。结果与物理的措施挤出物质量和显示一个好的相关性。合适的量化工具该应用程序的方法。相比之下,传统的统计过程控制技术和未来的应用程序进行了讨论。

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《Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers》 |2004年第6期|770-783|共14页
作者
B.D.Russell; D.I.Wilson; S.BlackburnD.I.Wilson;
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作者单位

IRC in Materials Processing,University of Birmingham,Birmingham,UK;

Department of Chemical Engineering,University of Cambridge,Cambridge,UK;

"Signal Processing Laboratorv,Department of Engineering,Universitv of Cambridge,Cambridge,UK;

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正文语种英语
中图分类国际共产主义运动;
关键词
datum pressure; Entrapped air; ON-LINE MONITORSCONFORMONNoise reductionextrusionsignal processingPastes;

机译：基准压力;裹入气;在线MONITORSCONFORMONNoise reductionextrusionsignalprocessingPastes;

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Monitoring structural aspects of pastes undergoing continuous extrusion using signal processing of pressure data

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