用反射光弹性进行材料挤出技术制造的复合材料零件的残余应力表征
Karol Goryl1, Marek Kočiško1, Radoslav Vandžura1
1Faculty of Manufacturing Technologies, Technical University of Kosice, Bayerova 1, 080 01 Presov, Slovakia.
Polymers
|February 27, 2026
概括
反射光弹性有效地可视化了3D打印复合材料中的残余应力放松. 化减轻了压力,更厚的样本在磨损水喷射缓解切割附近显示出更明显的边缘图案.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 光学计量学 在光学计量学
背景情况:
- 复合材料中的残余应力阻碍了尺寸精度和机械性能.
- 在ASA复合材料中的阿拉米德纤维增强具有独特的压力放松挑战.
- 需要全场光学技术来进行全面的残余应力分析.
研究的目的:
- 为了评估反射光弹性 (PhotoStress) 以可视化ASA-胺复合材料中的残余应力松.
- 为了在不同样本厚度的样本中比较化对应力松的有效性.
- 评估磨砂水喷射 (AWJ) 缓解切割对应力释放的实用性.
主要方法:
- 通过FFF制造ASA-阿拉米德复合样品 (2-10毫米厚度).
- 使用受控的AWJ切割诱导局部应力释放.
- 使用反射光弹性与极光镜记录异色边缘场.
- 在非热和热 (80°C/5小时) 条件下评估样本.
主要成果:
- 在8-10毫米厚的样本中观察到可溶解的边缘图案;在2-6毫米厚的样本中没有检测到边缘.
- 对于8毫米的样本,化降低了最大边缘顺序 (Nmax,全球) 从1.0到<0.60.
- 对于10毫米的样本,化将Nmax,global从1.2降至0.9,带有更广泛的边缘图案.
- AWJ切割提供了可重复的应力释放与最小的热影响.
结论:
- 反射光弹性适用于FFF复合材料中残余应力放松的比较,全场可视化.
- 较厚的复合材料部件表现出较大的残余应力,可通过光弹性检测到.
- 化有效地减少了残余应力,而AWJ切割对于应力释放研究来说是实用的.
相关概念视频
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