nondestructive evaluation (NDE) is an analysis technique used to evaluate the properties of a material, component, structure or system without causing damage. In this paper, we introduce a novel mixed reality system for NDE training. In particular, we model and simulate the inspected object and the inspection probe. The operator trainees with the wearable headsets are able to move and zoom the inspected object in a mixed environment, i.e., reality with virtual objects overlaid. In addition, the trainees use their gaze, gesture, and voice to control and interact with the virtual objects within the NDE training session. They can also access the help manual in order to follow the training instruction. The system is successfully operated on HoloLens, the state-of-the-art mixed reality headset. Evaluational results demonstrate that the use of mixed reality training provides significant benefit for the potential technician trainees.

无损评估（NDE）是一种分析技术，用于评估材料，组件，结构或系统的特性而不会造成损坏。在本文中，我们介绍了一种用于NDE训练的新型混合现实系统。特别是，我们对被检查对象和检查探针进行建模和仿真。带有可穿戴式头戴式耳机的操作员培训生能够在混合环境（即带有虚拟对象的现实环境）中移动和缩放受检对象。此外，受训人员可以使用他们的凝视，手势和语音来控制NDE培训课程中的虚拟对象并与之互动。他们还可以访问帮助手册，以遵循培训说明。该系统可以在最新的混合现实耳机HoloLens上成功运行。