Full-field imaging of guided ultrasonic waves is an emerging Nondestructive Testing (NDT) technique for the inspection of thin-walled structures. One of the most effective full-field processing techniques is the Local Wavenumber Estimation (LWE) which can be applied to detect various types of damage in both homogeneous and multilayer specimens. In this paper, we discuss the possibilities for optimizing the efficiency of the LWE algorithm to facilitate its practical applications. We propose several different signal processing approaches to optimize the algorithm's computational efficiency without sacrificing the damage imaging quality. We evaluate the influence of these improvements by measuring the computation time necessary to perform particular processing steps of the LWE process. We also provide the implementation guidelines for the proposed optimization techniques. The proposed improvements allow for a considerable reduction in the processing time of the LWE with respect to the baseline implementation of the algorithm, ranging from a factor of 10 to a factor of 24, depending on the input dataset.

引导超声波的全场成像是一种新兴的无损检测 (NDT) 技术，用于检查薄壁结构。最有效的全场处理技术之一是局部波数估计 (LWE)，可用于检测均质和多层样品中的各种类型的损伤。在本文中，我们讨论了优化 LWE 算法效率以促进其实际应用的可能性。我们提出了几种不同的信号处理方法来优化算法的计算效率而不牺牲损伤成像质量。我们通过测量执行 LWE 过程的特定处理步骤所需的计算时间来评估这些改进的影响。我们还提供了建议的优化技术的实施指南。所提议的改进允许 LWE 相对于算法的基线实现的处理时间大大减少，范围从 10 倍到 24 倍，具体取决于输入数据集。