Optimising laser-induced phased-arrays for defect detection in continuous inspections
Optimising laser-induced phased-arrays for defect detection in continuous inspections
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DOI：
10.1016/j.ndteint.2024.103091
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发表时间：
2024-03
期刊：
影响因子：
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通讯作者：
S. Cantero-Chinchilla;A. Croxford;Paul D. Wilcox
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文献类型：
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作者：
S. Cantero-Chinchilla;A. Croxford;Paul D. Wilcox
本文提出了一种新的优化方法，激光诱导相控阵检测的目的，在大面积检测。优化的目的是最大限度地提高相控阵的检测能力，同时最大限度地减少检查时间。这是通过使用评估多个候选配置的模拟光线跟踪模型来完成的。测量目标缺陷的检测性能的度量是接收器操作特性曲线和信噪比。检测时间是通过连续检测中单位长度上的测量点数间接计算的。这取决于相控阵的物理孔径和间距，并且它们是优化的量。优化和建模方法进行了验证，在一个侧钻孔作为目标缺陷的实验案例研究。提供了关于方向性缺陷（如不同角度的裂纹）的进一步建议。
This paper proposes a novel optimisation approach for laser induced phased-arrays for detection purposes in large area inspection. The optimisation aims to maximise the detection capability of a phased-array while minimising the inspection time. This is done by using a simulation ray-tracing model that evaluates multiple candidate configurations. The metrics that measure the detection performance for a target defect are the receiver operating characteristic curve and the signal-to-noise ratio. The inspection time is indirectly computed through the number of measurement points per unit length in a continuous inspection. This depends on the physical aperture and pitch of the phased-array and they are the quantities optimised. The optimisation and modelling approach are validated in an experimental case study for a side-drilled hole as target defect. Further recommendations about directional defects (eg cracks at different angles) are provided.