| 许伟， 聂恒勇， 刘禹.3D打印样品原位压缩下的结构观测[J].轻工机械,2020,38(5):89-93 |
| 3D打印样品原位压缩下的结构观测 |
| Structural Observation of 3D Printed Samples in Situ Compression |
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| DOI：10.3969/j.issn.1005 2895.2020.05.016 |
| 中文关键词: 增材制造 无损检测 3D直书写同轴打印 聚二甲基硅氧烷 显微断层扫描 流变特性 |
| 英文关键词:additive manufacturing nondestructive testing coaxial 3D direct writing printing PDMS(polydimethylsiloxane) Micro CT rheological characteristics |
| 基金项目:国家自然科学基金面上项目（51875253）； 高等学校学科创新引智计划资助（B18027）。 |
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| 中文摘要: |
| 为观测同轴直书写3D打印样品在应力下的结构变化，课题组提出并使用可原位压缩的Micro CT设备对打印样品内部结构进行了三维成像表征和分析。基于直书写3D打印的基本概念，匹配合适的工艺参数，成功制备了具有空心结构且有复杂三维结构的同轴硅橡胶管道，并用Micro CT成功观测到同轴硅橡胶样品内部结构在不同应力下的变形情况。结果表明该表征方法在弹性压缩的条件下，可准确地对同轴打印样品内部结构及其变化进行成像分析。该分析方法有助于改善打印工艺参数，以获得具有更加优异性能的3D打印样品。 |
| 英文摘要: |
| In order to observe the structural changes of the coaxial direct writing 3D printed samples under stresses, a micro CT capable of in situ compressive testing was proposed to characterize and analyze the internal structure of the printed samples by 3D imaging. Based on the basic concept of direct writing 3D printing and appropriate process parameters, a coaxial silicone rubber tube with hollow structure and complex three dimensional structure was successfully prepared, and the deformation of the internal structure of the coaxial silicone rubber sample under different stresses was observed through micro CT. The results show that under the condition of elastic compression, the internal structural changes in the coaxial printed samples can be accurately analyzed by this method. The analysis method is helpful to improve the printing process parameters for obtaining 3D printed samples with better performance. |
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