In-process ultrasonic inspection of challenging welds and additively manufactured components with complex geometries

该博士项目旨在直接在制造点改进具有挑战性的部件的超声成像。该项目专门针对复杂焊缝和增材制造部件，寻求扩展和适应热和微结构补偿方法，以优化超声成像。本博士课程将专注于整合先进的成像技术（PAUT） （FMC-TFM， PWI， PCI，多模态成像等），用于成像复杂形状焊接和增材制造部件的过程中缺陷。目标：-从超声波参数和飞行时间测量中获得动态复杂组件边界的近实时映射，其中存在热梯度，微观结构影响可以忽略不计。-利用热梯度模型和复杂的建筑几何来约束问题，从超声波数据中映射复杂和空间变化的微观结构。-复杂形状焊缝和增材结构的实验检验和成像。-应用先进的PAUT成像技术检查焊缝和增材制造部件的复杂结构。-研究先进的PAUT方法的性能，如用于检测和成像焊接和增材制造部件中不同类型缺陷的多模态TFM技术。-在RoboWAAM中进行成像技术的试验和集成-世界上第一个结合了WAAM和进程中的NDE单元。

This PhD project seeks to improve the ultrasonic imaging of challenging components directly at the point of manufacture. Specifically targeting complex welds and additively manufactured components, this project seeks to extend and adapt thermal and microstructural compensation methods to optimize ultrasonic imaging. This PhD work will focus on incorporating advanced (PAUT) imaging techniques (FMC-TFM, PWI, PCI, multimodal imaging etc.,) for imaging in-process defects in complex shaped welds and AM components. Objectives: - Near real-time mapping of dynamic complex component boundaries from ultrasonic wave parameters and in-process time of flight measurements where a thermal gradient is present and microstructural effects are negligible. - Mapping of complex and spatially varying microstructures from ultrasonic wave data using models of the thermal gradient and the complex build geometry to constrain the problem. - Experimental inspection and imaging of complex-shaped welds and additive builds. - Application of advanced PAUT imaging techniques for inspection of complex configurations of welds and additive manufactured components.- Study the performances of advanced PAUT methodologies like multi-modal TFM techniques for detection and imaging the full face of different types of defects in welds and AM components. - Trials and integration of imaging advances within RoboWAAM - The world's first combined WAAM and In-Process NDE Cell.