New manufacturing technologies such as additive manufacturing facilitate flexible and complex designs and production of components. However, these new techniques should not compromise the safety aspect, which imposes higher demands on the integrity insurance and inspection methods. Phased array ultrasonic testing (PAUT) provides advanced inspection and evaluation processes, whereas qualification is still needed when applied together with new manufacturing techniques. Numerical modeling, as one of the potential qualification methods, has been developed for decades and should be validated before practical applications. This paper presents an experimental validation work of the phased array probe model implemented in a software, simSUNDT, by comparing the maximum echo amplitudes between the physical experiments and simulations. Two test specimens with side-drilled holes (SDHs) and different materials are considered for validation and practical purposes. An experimental platform with a mechanized gantry system, which enables stabilized inspection procedure, is built and applied during the validation work. Good correlations can be seen from the comparisons and this model is concluded as an acceptable alternative to the corresponding experimental work. The relation between depth and beam angle is also noticed and investigated, which is essential to guarantee an accurate inspection.

中文翻译：

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相控阵探头模型在超声检测中的实验验证

增材制造等新制造技术促进了组件的灵活和复杂的设计和生产。然而，这些新技术不应在安全方面妥协，这对完整性保险和检查方法提出了更高的要求。相控阵超声波检测 (PAUT) 提供了先进的检测和评估流程，而与新的制造技术一起应用时，仍然需要进行认证。数值建模作为一种潜在的鉴定方法，已经发展了几十年，应该在实际应用之前进行验证。本文通过比较物理实验和模拟之间的最大回波幅度，介绍了在软件 simSUNDT 中实现的相控阵探头模型的实验验证工作。出于验证和实际目的，考虑了两个带有侧钻孔 (SDH) 和不同材料的试样。在验证工作中建立并应用了一个带有机械化龙门系统的实验平台，可以实现稳定的检查程序。从比较中可以看出良好的相关性，并且该模型被认为是相应实验工作的可接受替代方案。深度和光束角之间的关系也被注意到和研究，这对于保证准确检查至关重要。从比较中可以看出良好的相关性，并且该模型被认为是相应实验工作的可接受替代方案。深度和光束角之间的关系也被注意到和研究，这对于保证准确检查至关重要。从比较中可以看出良好的相关性，并且该模型被认为是相应实验工作的可接受替代方案。深度和光束角之间的关系也被注意到和研究，这对于保证准确检查至关重要。