The Experts below are selected from a list of 56460 Experts worldwide ranked by ideXlab platform

Lijuan Zhao - One of the best experts on this subject based on the ideXlab platform.

  • real time diagnosing Polymer Processing in injection molding using ultrasound
    Journal of Applied Polymer Science, 2012
    Co-Authors: Lijuan Zhao, Yu Lai, Chen Pei, Chengkui Jen
    Abstract:

    Ultrasonic diagnosing technique with a new high-temperature ultrasonic transducer is developed to real-time diagnose Polymer Processing and its morphology changes in injection molding Processing. Compared with the previous researches, the new technique can provide more and accurate information. In this study, ultrasound diagnosis shows that longitudinal wave can real-time characterize the data of the injection process and Polymer morphology changes, including melt flow arrival time, the part ejection time, filling and packing stages, Polymer solidification process, and the morphology changes during Polymer crystallization. Shear waves can real-time diagnose Young's and shear storage modulus, anisotropy property of Polymer in injection molding. During our research, real-time ultrasonic diagnosis shows that the storage modulus along the vertical direction is larger than that of the parallel to the melt flow direction under our setup injection conditions. Scanning electron microscopy and dynamic mechanical analysis measurements present that it is because the crystalline lamellas of HDPE are parallel arrangement and grow in a vertical to melt flow direction owing to injection shear force under a certain injection conditions. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

  • Real‐time diagnosing Polymer Processing in injection molding using ultrasound
    Journal of Applied Polymer Science, 2012
    Co-Authors: Lijuan Zhao, Yu Lai, Chen Pei, Chengkui Jen
    Abstract:

    Ultrasonic diagnosing technique with a new high-temperature ultrasonic transducer is developed to real-time diagnose Polymer Processing and its morphology changes in injection molding Processing. Compared with the previous researches, the new technique can provide more and accurate information. In this study, ultrasound diagnosis shows that longitudinal wave can real-time characterize the data of the injection process and Polymer morphology changes, including melt flow arrival time, the part ejection time, filling and packing stages, Polymer solidification process, and the morphology changes during Polymer crystallization. Shear waves can real-time diagnose Young's and shear storage modulus, anisotropy property of Polymer in injection molding. During our research, real-time ultrasonic diagnosis shows that the storage modulus along the vertical direction is larger than that of the parallel to the melt flow direction under our setup injection conditions. Scanning electron microscopy and dynamic mechanical analysis measurements present that it is because the crystalline lamellas of HDPE are parallel arrangement and grow in a vertical to melt flow direction owing to injection shear force under a certain injection conditions. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

  • a real time ultrasonic technique for viscosity monitoring during Polymer Processing
    THE XV INTERNATIONAL CONGRESS ON RHEOLOGY: The Society of Rheology 80th Annual#N#Meeting, 2008
    Co-Authors: Lijuan Zhao, Zhigang Sun, Shaoyun Guo
    Abstract:

    An experimental means has been designed for studying the possibility of using ultrasound to monitor melt viscosity change during Polymer Processing. The results have shown that not only ultrasound is capable of following melt viscosity change as results of temperature and flow rate variations, but also sensitive to material composition change. The sensitivity of ultrasound to both Processing conditions and material composition makes ultrasound an excellent tool for the monitoring and control of Polymer processes.

  • A Real‐time Ultrasonic Technique for Viscosity Monitoring during Polymer Processing
    AIP Conference Proceedings, 2008
    Co-Authors: Lijuan Zhao, Zhigang Sun, Shaoyun Guo
    Abstract:

    An experimental means has been designed for studying the possibility of using ultrasound to monitor melt viscosity change during Polymer Processing. The results have shown that not only ultrasound is capable of following melt viscosity change as results of temperature and flow rate variations, but also sensitive to material composition change. The sensitivity of ultrasound to both Processing conditions and material composition makes ultrasound an excellent tool for the monitoring and control of Polymer processes.

Chengkui Jen - One of the best experts on this subject based on the ideXlab platform.

  • real time diagnosing Polymer Processing in injection molding using ultrasound
    Journal of Applied Polymer Science, 2012
    Co-Authors: Lijuan Zhao, Yu Lai, Chen Pei, Chengkui Jen
    Abstract:

    Ultrasonic diagnosing technique with a new high-temperature ultrasonic transducer is developed to real-time diagnose Polymer Processing and its morphology changes in injection molding Processing. Compared with the previous researches, the new technique can provide more and accurate information. In this study, ultrasound diagnosis shows that longitudinal wave can real-time characterize the data of the injection process and Polymer morphology changes, including melt flow arrival time, the part ejection time, filling and packing stages, Polymer solidification process, and the morphology changes during Polymer crystallization. Shear waves can real-time diagnose Young's and shear storage modulus, anisotropy property of Polymer in injection molding. During our research, real-time ultrasonic diagnosis shows that the storage modulus along the vertical direction is larger than that of the parallel to the melt flow direction under our setup injection conditions. Scanning electron microscopy and dynamic mechanical analysis measurements present that it is because the crystalline lamellas of HDPE are parallel arrangement and grow in a vertical to melt flow direction owing to injection shear force under a certain injection conditions. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

  • Real‐time diagnosing Polymer Processing in injection molding using ultrasound
    Journal of Applied Polymer Science, 2012
    Co-Authors: Lijuan Zhao, Yu Lai, Chen Pei, Chengkui Jen
    Abstract:

    Ultrasonic diagnosing technique with a new high-temperature ultrasonic transducer is developed to real-time diagnose Polymer Processing and its morphology changes in injection molding Processing. Compared with the previous researches, the new technique can provide more and accurate information. In this study, ultrasound diagnosis shows that longitudinal wave can real-time characterize the data of the injection process and Polymer morphology changes, including melt flow arrival time, the part ejection time, filling and packing stages, Polymer solidification process, and the morphology changes during Polymer crystallization. Shear waves can real-time diagnose Young's and shear storage modulus, anisotropy property of Polymer in injection molding. During our research, real-time ultrasonic diagnosis shows that the storage modulus along the vertical direction is larger than that of the parallel to the melt flow direction under our setup injection conditions. Scanning electron microscopy and dynamic mechanical analysis measurements present that it is because the crystalline lamellas of HDPE are parallel arrangement and grow in a vertical to melt flow direction owing to injection shear force under a certain injection conditions. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

Clark A. Mount-campbell - One of the best experts on this subject based on the ideXlab platform.

  • Modelling and simulation in reactive Polymer Processing
    Modelling and Simulation in Materials Science and Engineering, 2004
    Co-Authors: Jose M. Castro, Mauricio Cabrera Rios, Clark A. Mount-campbell
    Abstract:

    Modelling and simulation in reactive Polymer Processing have been active research areas for the past decades in academic institutions as well as within the industry. Both areas have played a key role in advancing and optimizing reactive Polymer Processing operations. The objective of this paper is to review the two major classifications of models used to simulate Polymer processes: physics based models and empirical models. Additionally, a section on multiple criteria optimization using data envelopment analysis has been included for completeness. The work presented here helps define a decision-making framework for the creation of reactive Polymer process models and for the effective selection of settings of the process variables based on these models.

Jose M. Castro - One of the best experts on this subject based on the ideXlab platform.

  • Modelling and simulation in reactive Polymer Processing
    Modelling and Simulation in Materials Science and Engineering, 2004
    Co-Authors: Jose M. Castro, Mauricio Cabrera Rios, Clark A. Mount-campbell
    Abstract:

    Modelling and simulation in reactive Polymer Processing have been active research areas for the past decades in academic institutions as well as within the industry. Both areas have played a key role in advancing and optimizing reactive Polymer Processing operations. The objective of this paper is to review the two major classifications of models used to simulate Polymer processes: physics based models and empirical models. Additionally, a section on multiple criteria optimization using data envelopment analysis has been included for completeness. The work presented here helps define a decision-making framework for the creation of reactive Polymer process models and for the effective selection of settings of the process variables based on these models.

Shaoyun Guo - One of the best experts on this subject based on the ideXlab platform.