The effectiveness of optimizing electrical conductivity of carbon fiber/carbon nanotube (CNT)/epoxy hybrid composites via Taguchi method was demonstrated.CNTs were induced on carbon fabric by electrophoretic depositio...The effectiveness of optimizing electrical conductivity of carbon fiber/carbon nanotube (CNT)/epoxy hybrid composites via Taguchi method was demonstrated.CNTs were induced on carbon fabric by electrophoretic deposition (EPD) technique.The essential deposition parameters were identified as 1) the deposition time,2) the deposition voltage,3) the mass fraction of CNTs in suspension,and 4) the distance between the electrodes.An experimental design was then performed to establish the appropriate levels for each factor.An orthogonal array of L9 (34) was designed to conduct the experiments.Electrical conductivity results were collected as the response.The relative influences of design parameters on the response were discussed.Using the model,signal to noise (S/N) ratio and response characteristics for the optimized deposition parameter combination were predicted.The results show clearly that the optimum condition of electrophoretic deposition (EPD) process improves the electrical conductivity of carbon/epoxy hybrid composites.展开更多
本文提出了一种新的资料处理方法——速度谱约束(Constraints of Velocity Spectrum,CVS)。该方法首先对叠前CMP道集进行速度分析,拾取有效信号速度,经过动校正后利用横向滤波技术将校平后的信号和未校平的噪声分离;再进行反动校;再次...本文提出了一种新的资料处理方法——速度谱约束(Constraints of Velocity Spectrum,CVS)。该方法首先对叠前CMP道集进行速度分析,拾取有效信号速度,经过动校正后利用横向滤波技术将校平后的信号和未校平的噪声分离;再进行反动校;再次进行速度分析拾取干扰波速度,经过动校正后将校平的干扰波与未校平的有效信号分离,对分离的有效信号利用干扰波速度反动校后再利用有效信号速度动校正;最后进行水平叠加。该方法在提高资料信噪比的同时有效地提高了横向和纵向分辨率,且具有很好的保真度。展开更多
基金Project supported by the Second Stage of Brain Korea 21 Projects and the National Research Foundation of Korea (2011-0030804) Funded by the Korea Government (MEST)
文摘The effectiveness of optimizing electrical conductivity of carbon fiber/carbon nanotube (CNT)/epoxy hybrid composites via Taguchi method was demonstrated.CNTs were induced on carbon fabric by electrophoretic deposition (EPD) technique.The essential deposition parameters were identified as 1) the deposition time,2) the deposition voltage,3) the mass fraction of CNTs in suspension,and 4) the distance between the electrodes.An experimental design was then performed to establish the appropriate levels for each factor.An orthogonal array of L9 (34) was designed to conduct the experiments.Electrical conductivity results were collected as the response.The relative influences of design parameters on the response were discussed.Using the model,signal to noise (S/N) ratio and response characteristics for the optimized deposition parameter combination were predicted.The results show clearly that the optimum condition of electrophoretic deposition (EPD) process improves the electrical conductivity of carbon/epoxy hybrid composites.
文摘本文提出了一种新的资料处理方法——速度谱约束(Constraints of Velocity Spectrum,CVS)。该方法首先对叠前CMP道集进行速度分析,拾取有效信号速度,经过动校正后利用横向滤波技术将校平后的信号和未校平的噪声分离;再进行反动校;再次进行速度分析拾取干扰波速度,经过动校正后将校平的干扰波与未校平的有效信号分离,对分离的有效信号利用干扰波速度反动校后再利用有效信号速度动校正;最后进行水平叠加。该方法在提高资料信噪比的同时有效地提高了横向和纵向分辨率,且具有很好的保真度。
