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Advanced analytics of elastic adhesive bonds by means of in situ computed tomography
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering ( IF 2.3 ) Pub Date : 2020-03-17 , DOI: 10.1177/0954408920912145
Jens Philipp 1 , Elisabeth Stammen 1 , Klaus Dilger 1
Affiliation  

This paper addresses optimization of parameters and measuring setups for in situ computed tomography measurements on marker particle-filled adhesives. The focus of this work was to increase the detail detectability and discriminability between used marker particles and surrounding adhesive compound even for materials with a high X-ray attenuation. Therefore, it is necessary to reduce the effects of artifacts like scattered X-rays and beam hardening, respectively. A key benefit of being able to distinguish different materials clearly improves the correct interpretation of the reconstructed three-dimensional volume significantly, while a reduction of artificial disturbances enhances the possibility to visualize previously overlaid undetected details, e.g. air voids. Performing in situ computed tomography measurements by applying the optimized parameter setups, cavitation formation was observed investigating the particle behavior of specimens modified with glass beads as marker particles under applied load. An achieved bonding enhancement by using a coupling agent as pre-treatment for glass beads was also proven by means of in situ computed tomography. Furthermore, the parameter setups optimized for bulk specimen could be adapted on material combinations, e.g. single-lap shear specimen, by adjusting a few parameters. Additional experiments demonstrate that computed tomography measurements can also be used for analytical purposes, for instance to evaluate the mixing quality of the so-called QUADRO™ or 2C mixers for two-component adhesives.

中文翻译:

通过原位计算机断层扫描对弹性粘合剂粘合进行高级分析

本文讨论了对标记颗粒填充粘合剂进行原位计算机断层扫描测量的参数和测量设置的优化。这项工作的重点是提高所用标记颗粒和周围粘合剂化合物之间的细节可检测性和可辨别性,即使对于具有高 X 射线衰减的材料也是如此。因此,有必要分别减少散射 X 射线和光束硬化等伪影的影响。能够清楚地区分不同材料的一个关键好处是显着提高了对重建的 3D 体积的正确解释,而人工干扰的减少增强了可视化先前叠加的未检测到的细节(例如空隙)的可能性。通过应用优化的参数设置进行原位计算机断层扫描测量,观察到空化形成,研究用玻璃珠作为标记粒子在施加负载下修饰的样本的粒子行为。还通过原位计算机断层扫描证明了通过使用偶联剂作为玻璃珠预处理实现的粘合增强。此外,通过调整一些参数,为大块试样优化的参数设置可以适应材料组合,例如单搭接剪切试样。其他实验表明,计算机断层扫描测量也可用于分析目的,例如评估所谓的 QUADRO™ 或 2C 混合器的混合质量,用于双组分粘合剂。观察到空化形成,研究了在施加载荷下用玻璃珠作为标记颗粒改性的样品的颗粒行为。还通过原位计算机断层扫描证明了通过使用偶联剂作为玻璃珠预处理实现的粘合增强。此外,通过调整一些参数,针对大块试样优化的参数设置可以适用于材料组合,例如单搭接剪切试样。其他实验表明,计算机断层扫描测量也可用于分析目的,例如评估所谓的 QUADRO™ 或双组分粘合剂 2C 混合器的混合质量。观察到空化形成,研究了在施加载荷下用玻璃珠作为标记颗粒改性的样品的颗粒行为。还通过原位计算机断层扫描证明了通过使用偶联剂作为玻璃珠预处理实现的粘合增强。此外,通过调整一些参数,为大块试样优化的参数设置可以适应材料组合,例如单搭接剪切试样。其他实验表明,计算机断层扫描测量也可用于分析目的,例如评估所谓的 QUADRO™ 或 2C 混合器的混合质量,用于双组分粘合剂。还通过原位计算机断层扫描证明了通过使用偶联剂作为玻璃珠预处理实现的粘合增强。此外,通过调整一些参数,为大块试样优化的参数设置可以适应材料组合,例如单搭接剪切试样。其他实验表明,计算机断层扫描测量也可用于分析目的,例如评估所谓的 QUADRO™ 或 2C 混合器的混合质量,用于双组分粘合剂。还通过原位计算机断层扫描证明了通过使用偶联剂作为玻璃珠预处理实现的粘合增强。此外,通过调整一些参数,为大块试样优化的参数设置可以适应材料组合,例如单搭接剪切试样。其他实验表明,计算机断层扫描测量也可用于分析目的,例如评估所谓的 QUADRO™ 或 2C 混合器的混合质量,用于双组分粘合剂。
更新日期:2020-03-17
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