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首页> 外文学位 >In-Situ Printing of Conductive Polylactic Acid (cPLA) Strain Sensors Embedded into Additively Manufactured Parts using Fused Deposition Modeling
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In-Situ Printing of Conductive Polylactic Acid (cPLA) Strain Sensors Embedded into Additively Manufactured Parts using Fused Deposition Modeling

机译：使用熔融沉积建模原位印刷嵌入增材制造零件中的导电聚乳酸（cPLA）应变传感器

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摘要

Additive Manufacturing (AM) technology has been around for decades, but until recently, they have been expensive, relatively large, and not available to most institution. Increased technological advances in 3D printing and awareness throughout industry, universities and even hobbyist has put increasing demand to substitute AM parts in place of traditionally manufactured (subtractive) designs; however, there is a large variability of part quality and mechanical behavior due to the inherent printing process, which must be understood before AM parts are used for load bearing and overall structural designs.;This research detailed in this thesis paper presents a technique to additively manufacture conductive polymer strain sensors into 3D printed polymer-based in order to measure internal strains. Methods to assemble the coupons for data acquisition and tensile loading and unloading are also detailed in this report. Several variables are explored in order to understand the effects of user-defined printing parameters on the strain sensor sensitivity, and stability while being subjected to unidirectional tension loading.;Findings from this study report that there is a strong correlation between part, or coupon strain and resistance measured by the conductive strain sensor. Although several variables were explored in this study, the gauge factor and repeatability varied significantly, thus preventing clear definition between changing variables and the measured results.
机译：增材制造（AM）技术已经存在了数十年，但是直到最近，它们一直很昂贵，相对较大，并且大多数机构无法使用。 3D打印技术的不断进步以及整个行业，大学甚至业余爱好者的认识，对替代传统制造（减法）设计的AM零件提出了越来越高的要求。但是，由于固有的印刷工艺，零件质量和机械性能会有很大的差异，在将AM零件用于承重和整体结构设计之前必须了解这些问题。；本论文的详细研究提出了一种附加的技术。将导电聚合物应变传感器制造为基于3D打印的聚合物，以测量内部应变。本报告还详细介绍了组装试样以进行数据采集以及拉伸加载和卸载的方法。为了了解用户定义的打印参数对应变传感器灵敏度和在单向张力载荷下的稳定性的影响，探讨了几个变量。该研究的结果表明，零件或试样应变之间存在很强的相关性。和电阻由导电应变传感器测量。尽管在这项研究中探索了几个变量，但测量因子和可重复性差异很大，从而阻止了变量和测量结果之间的明确定义。

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  • 作者

    Ouellette, Brittany Joy.;

  • 作者单位

    University of California, San Diego.;

  • 授予单位 University of California, San Diego.;
  • 学科 Engineering.;Aerospace engineering.;Mechanical engineering.
  • 学位 M.S.
  • 年度 2018
  • 页码 62 p.
  • 总页数 62
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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