Automated Laser Ultrasonics for Metal 3D Printing Inspection

附加制造(AM)是一种呈指数级增长的制造技术，在设计灵活性、浪费和缩短交货期方面具有许多替代方法无法比拟的优势。更具体地说，WAAM(WAAM)技术能够生产大大小小的金属结构，同时将制造时间和成本降低约50%。一些替代的减法包括锻造和大量加工，这可能会导致更高的成本和材料浪费。我的博士项目的目标是使用机器人手段结合激光超声在WAAM周期内执行过程中的无损评估，从而实现部件远程超声检测的自动化。无损评估(NDE)是制造业中广泛使用的质量保证和结构完整性的方法。使用激光超声波而不是基于换能器的超声波可以实现非接触式检测，这对于制造行业的过程中检测是理想的，因为制造过程辐射高温。激光超声还可以应对复杂的组件，以及其他优势。

Additive Manufacturing (AM) is an exponentially growing manufacturing technique which offers numerous advantages over alternative methods in terms of design flexibility, waste and lead-time reduction. More specifically, the Wire Arc AM (WAAM) technology enables the production of metal structures both small and large, while reducing the manufacturing duration and cost by approximately 50%. Some of the alternative, subtractive methods include forging and extensive machining which can result in higher costs and material waste. The aim of my PhD project is the automation of remote ultrasonic inspection of components using robotic means coupled with laser ultrasonics to perform in-process Non-Destructive Evaluation during the WAAM cycle. Non-Destructive evaluation (NDE) is a widely used method of quality assurance and structural integrity in the manufacturing industry. Using laser ultrasonics rather than transducer-based ultrasound enables a non-contact inspection which is ideal for in-process inspection in the manufacturing industry, since the manufacturing process radiates high temperatures. Laser ultrasound can also cope with the complexity of the components among other advantages.