MATSUO, Takuma, and Daisuke HATANAKA. “Development of Non-Contact Fatigue Crack Propagation Monitoring Method Using Air-Coupled Acoustic Emission System”. Engineering Transactions 67, no. 2 (April 5, 2019): 185–198. Accessed April 24, 2025. https://et3.ippt.pan.pl/index.php/et/article/view/1009.