In recent years, laser ultrasonic visualization testing (LUVT) has attracted much attention because of its ability to efficiently perform non-contact ultrasonic non-destructive testing.Despite many success reports of deep learning based image analysis for widespread areas, attempts to apply deep learning to defect detection in LUVT images face the difficulty of preparing a large dataset of LUVT images that is too expensive to scale. To compensate for the scarcity of such training data, we propose a data augmentation method that generates artificial LUVT images by simulation and applies a style transfer to simulated LUVT images.The experimental results showed that the effectiveness of data augmentation based on the style-transformed simulated images improved the prediction performance of defects, rather than directly using the raw simulated images for data augmentation.
@article{arxiv.2305.18614,
title = {Simulation-Aided Deep Learning for Laser Ultrasonic Visualization Testing},
author = {Miya Nakajima and Takahiro Saitoh and Tsuyoshi Kato},
journal= {arXiv preprint arXiv:2305.18614},
year = {2023}
}