Broadband Laser Ultrasonic Excitation and Multi-band Sensing for Hierarchical Automatic Damage Visualization
| العنوان: | Broadband Laser Ultrasonic Excitation and Multi-band Sensing for Hierarchical Automatic Damage Visualization |
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| المؤلفون: | Jung-Ryul Lee, Mai Thanh Thai, Seung-Chan Hong, Jeong-Beom Ihn, Hasan Ahmed |
| المصدر: | International Journal of Aeronautical and Space Sciences. 20:913-932 |
| بيانات النشر: | Springer Science and Business Media LLC, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | business.industry, Frequency band, Computer science, Acoustics, Ultrasonic testing, Aerospace Engineering, 02 engineering and technology, Laser, 01 natural sciences, Signal, law.invention, 010309 optics, 020303 mechanical engineering & transports, Data acquisition, 0203 mechanical engineering, Control and Systems Engineering, Aliasing, law, Nondestructive testing, 0103 physical sciences, General Materials Science, Ultrasonic sensor, Electrical and Electronic Engineering, business |
| الوصف: | It is well known that the selection of a frequency for signal generation and data acquisition significantly affects the quality of ultrasonic or laser ultrasonic nondestructive testing (NDT) results, and the analog filter is essential to prevent the aliasing effect. This paper presents a systematic approach using a hierarchical inspection scheme for automatic inspection processes. A frequency band divider (FBD) with a single-input–multiple-output (SIMO) system was newly created to examine quickly various frequency ranges at single scanning using laser-based broadband excitation. The FBD was implemented into a pulse-echo ultrasonic propagation imaging (PE UPI) system capable of fully noncontact laser ultrasonic inspection. Only two scans are required to determine the optimal frequency range for unknown specimens. This tremendously reduces the number of scanning trials for the investigation of complete frequency ranges. |
| تدمد: | 2093-2480 2093-274X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::d69416244a1d22c272e01bb917bbea62 https://doi.org/10.1007/s42405-019-00210-4 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........d69416244a1d22c272e01bb917bbea62 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 20932480 2093274X |
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