Invention Grant
- Patent Title: Domain transformation method for dispersive ultrasonic guided wave signal
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Application No.: US16345713Application Date: 2017-12-29
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Publication No.: US10663437B2Publication Date: 2020-05-26
- Inventor: Jian Cai , Shenfang Yuan
- Applicant: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS
- Applicant Address: CN Nanjing
- Assignee: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS
- Current Assignee: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS
- Current Assignee Address: CN Nanjing
- Agency: Bayramoglu Law Offices LLC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@3b018bec
- International Application: PCT/CN2017/119826 WO 20171229
- International Announcement: WO2019/071849 WO 20190418
- Main IPC: G01N29/44
- IPC: G01N29/44 ; G01N29/24 ; B06B1/06 ; G01N29/04 ; G01N29/34
Abstract:
An improved domain transformation method for a dispersive ultrasonic guided wave signal, including the following steps: obtaining a dispersive wave number curve and a non-dispersive wave number curve corresponding to a mode of an ultrasonic guided wave signal; calculating an ultrasonic guided wave excitation waveform that is in distance domain and that has a reduced space width; obtaining an ultrasonic guided wave impulse response signal in distance domain; and calculating and obtaining a non-dispersive ultrasonic guided wave distance-domain signal whose resolution is enhanced.
Public/Granted literature
- US20190302064A1 IMPROVED DOMAIN TRANSFORMATION METHOD FOR DISPERSIVE ULTRASONIC GUIDED WAVE SIGNAL Public/Granted day:2019-10-03
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