Damage evaluation based on a wave energy flow map using multiple PZT sensors

Yaolu Liu, Ning Hu, Hong Xu, Weifeng Yuan, Cheng Yan, Yuan Li, Riu Goda, Alamusi, Jinhao Qiu, Huiming Ning, Liangke Wu

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)


    A new wave energy flow (WEF) map concept was proposed in this work. Based on it, an improved technique incorporating the laser scanning method and Betti's reciprocal theorem was developed to evaluate the shape and size of damage as well as to realize visualization of wave propagation. In this technique, a simple signal processing algorithm was proposed to construct the WEF map when waves propagate through an inspection region, and multiple lead zirconate titanate (PZT) sensors were employed to improve inspection reliability. Various damages in aluminum and carbon fiber reinforced plastic laminated plates were experimentally and numerically evaluated to validate this technique. The results show that it can effectively evaluate the shape and size of damage from wave field variations around the damage in the WEF map.

    Original languageEnglish
    Pages (from-to)1902-1917
    Number of pages16
    JournalSensors (Switzerland)
    Issue number2
    Publication statusPublished - 2014 Jan 23


    • Nondestructive inspection
    • Signal processing
    • Ultrasonic waves
    • Visualization technique
    • Wave energy flow

    ASJC Scopus subject areas

    • Analytical Chemistry
    • Biochemistry
    • Atomic and Molecular Physics, and Optics
    • Instrumentation
    • Electrical and Electronic Engineering


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