首页> 外文会议>ASME/ISCIE international symposium on flexible automation 2012 >ULTRASOUND TRANSDUCER ARRAY FABRICATION BASED ON ADDITIVE MANUFACTURING OF PIEZOCOMPOSITES
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ULTRASOUND TRANSDUCER ARRAY FABRICATION BASED ON ADDITIVE MANUFACTURING OF PIEZOCOMPOSITES

机译:基于压电复合材料加法制造的超声传感器阵列制备

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摘要

Conventional methods for fabricating ultrasound imaging transducer arrays, especially for high frequency range (>20 MHz), are expensive, time consuming and limited to relatively simple geometries. In this paper, the development of an additive manufacturing (AM) process based on digital micromirror devices (DMDs) is presented for the fabrication of piezoelectric devices such as ultrasound transducer arrays. Both green-part fabrication and the sintering of fabricated green-parts have been studied. A novel two-channel design in the bottom-up projection system is presented to address the piezo-composite fabrication challenges including a small curing depth and viscous ceramic slurry recoating. A prototype system has been developed for the fabrication of green-parts with complex shapes and small features. Based on the fabricated green-parts, the challenges in the sintering process for achieving desired functionality are discussed. Various approaches for increasing the density of sintered components are presented. Dielectric and piezoelectric properties of the fabricated samples are measured and compared with those of bulk PZT samples. Based on the identified challenges in the DMD-based AM process, future work for achieving fully functional piezoelectric ceramic components is discussed.
机译:用于制造超声成像换能器阵列的常规方法,特别是对于高频范围(> 20 MHz),昂贵,费时且限于相对简单的几何形状。在本文中,提出了基于数字微镜器件(DMD)的增材制造(AM)工艺的开发,用于制造压电器件(如超声换能器阵列)。既研究了生坯部件的制造,又研究了烧结的生坯部件的烧结。在自底向上投影系统中提出了一种新颖的两通道设计,以解决压电复合材料制造难题,包括较小的固化深度和粘稠的陶瓷浆料重涂。已经开发出用于制造具有复杂形状和小特征的绿色零件的原型系统。基于所制造的生坯,讨论了烧结过程中实现所需功能的挑战。提出了用于增加烧结部件的密度的各种方法。测量制造样品的介电和压电性能,并将其与大块PZT样品的介电和压电性能进行比较。基于在基于DMD的AM工艺中发现的挑战,讨论了实现全功能压电陶瓷组件的未来工作。

著录项

  • 来源
  • 会议地点 St. Louis MO(US)
  • 作者单位

    Daniel J. Epstein Department of Industrial and Systems Engineering University of Southern California, Los Angeles, CA 90089, USA,Department of Biomedical Engineering University of Southern California, Los Angeles, CA 90089, USA;

    Daniel J. Epstein Department of Industrial and Systems Engineering University of Southern California, Los Angeles, CA 90089, USA;

    Daniel J. Epstein Department of Industrial and Systems Engineering University of Southern California, Los Angeles, CA 90089, USA;

    Department of Biomedical Engineering University of Southern California, Los Angeles, CA 90089, USA;

    Department of Biomedical Engineering University of Southern California, Los Angeles, CA 90089, USA;

    Department of Biomedical Engineering University of Southern California, Los Angeles, CA 90089, USA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    additive manufacturing; ultrasound transducer arrays; mask image projection; piezocomposite fabrication;

    机译:添加剂制造;超声换能器阵列;遮罩图像投影;压电复合材料的制造;

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