...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Failure Analysis and Prevention >Failure Analysis and Anisotropy Evaluation of 3D-Printed Tensile Test Specimens of Different Geometries and Print Raster Patterns
【24h】

Failure Analysis and Anisotropy Evaluation of 3D-Printed Tensile Test Specimens of Different Geometries and Print Raster Patterns

机译：不同几何形状和印刷栅格图案的3D打印拉伸试验样品的失效分析和各向异性评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Anisotropic mechanical properties related to build orientation is a characteristic of parts fabricated with 3D printing technologies. In the development of new materials for 3D printing processes, understanding the effects of 3D printer build orientation and raster pattern on physical property and failure mode differences is extremely important. While there is currently no standard for the evaluation of build orientation-based mechanical performance, such analysis has typically been achieved through the fabrication and scrutiny of tensile and other test coupons which were printed in different build orientations. In some cases, printing specimens in the ZXY (or vertical) build orientation can be difficult due to the capability of a given 3D printer platform. There are also multiple tensile test specimen geometries specified in the ASTM D638 standard for the tensile testing of polymer materials and understanding which specimen geometry works best for 3D printing is not currently well understood. The work presented here explores the effect of tensile test specimen geometry on the anisotropy of mechanical properties related to the build orientation of tensile test specimens. The test coupons were fabricated using a material extrusion 3D printing platform based on fused deposition modeling technology using a grade of acrylonitrile butadiene styrene not typically used in 3D printing in order to simulate the testing of a new material. The effects of raster pattern and the geometric dependence of mechanical property anisotropy were explored, and validation of the use of "faux vertical" specimens in lieu of ZXY-printed specimens was demonstrated. Finally, scanning electron microscopy was used to perform fractography on the various versions of the printed tensile test specimens in order to determine the effect of raster pattern on failure mode.
机译：与构建方向相关的各向异性机械性能是使用3D打印技术制造的零件的特征。在用于3D打印过程的新材料的开发中，了解3D打印机的构造方向和光栅图案对物理性质和失效模式差异的影响非常重要。尽管目前尚无用于评估基于构造方向的机械性能的标准，但这种分析通常是通过以不同的构造方向打印的拉伸和其他测试试样的制造和检查来实现的。在某些情况下，由于给定的3D打印机平台的功能，很难以ZXY（或垂直）构建方向打印样本。在ASTM D638标准中还指定了多种拉伸测试样品几何形状，用于聚合物材料的拉伸测试，目前尚不了解哪种样品几何形状最适合3D打印。此处介绍的工作探讨了拉伸试样的几何形状对与拉伸试样的构造方向有关的机械性能各向异性的影响。使用基于挤压沉积技术的材料挤压3D打印平台（使用3D打印中通常不使用的等级的丙烯腈丁二烯苯乙烯）模拟新材料的测试，来制造测试样板。探索了光栅图案的影响和力学性能各向异性的几何依赖性，并证明了使用“人造垂直”样品代替ZXY打印样品的有效性。最后，为了确定光栅图案对破坏模式的影响，使用扫描电子显微镜对印刷的拉伸测试样品的各种版本进行了分形。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号