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优化机械性能和评估选择性激光烧结聚胺-12元件的疲劳行为

David Sommer¹, Henry Stockfleet¹, Ralf Hellmann¹

¹Applied Laser and Photonics Group, University of Applied Sciences, Würzburger Straße 45, 63743 Aschaffenburg, Germany.

|May 25, 2024

概括

优化聚胺选择性激光烧结需要了解能量密度. 通过特定的激光功率和扫描速度实现更高的能量密度,改善静态和动态机械性能,特别是在高构造温度下.

科学领域:

材料科学材料科学材料科学
添加剂制造添加剂制造添加剂制造
聚合物工程聚合物工程

背景情况:

选择性激光烧结 (SLS) 是生产聚合物组件的关键增材制造技术.
了解工艺参数对SLS聚胺机械性能的影响对于工业应用至关重要.

研究的目的:

综合研究SLS聚胺组件的机械性能.
通过改变过程参数和环境条件来优化静态和动态机械负载行为.
确定影响机械性能的关键因素,包括能量密度和温度.

主要方法:

系统地改变SLS过程参数:激光功率,扫描速度和构建温度.
在不同的环境条件下测试机械性能,包括不同的环境温度和主动冷却.
分析能量密度作为影响机械负载行为的主要因素.

主要成果:

能量密度被确定为决定性因素,在很大程度上独立于单个输入参数.
18瓦激光功率和2666毫米/秒扫描速度的最佳参数组合产生了最佳的静态和动态测试结果.
更高的建造温度提高了拉伸和疲劳强度,而环境测试温度显著影响了高循环疲劳和耐力极限.

结论:

该研究为SLS聚胺提供了一个最佳的参数集,以增强机械性能.
能量密度和温度是影响SLS聚胺组件性能的关键因素.
这些发现对于将SLS聚胺零件定制为具有不同环境暴露的苛刻工业应用至关重要.

关键词:

疲劳行为疲劳行为疲劳强度强度的疲劳强度是什么选择性激光烧结是一种选择性的激光烧结.拉力强度拉力强度是什么

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