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    Detecting Damage Size and Shape in a Plate Structure Using PZT Transducer Array

    Source: Journal of Aerospace Engineering:;2018:;Volume ( 031 ):;issue: 005
    Author:
    Lu Guangtao;Li Yourong;Zhou Mingle;Feng Qian;Song Gangbing
    DOI: 10.1061/(ASCE)AS.1943-5525.0000904
    Publisher: American Society of Civil Engineers
    Abstract: An algorithm to detect damage size and shape using a lead zirconate titanate (PZT) transducer array for a plate structure is developed in this paper. During the process of detection, the predetermined PZT transducers are chosen as actuators to generate Lamb waves, and others are chosen as sensors to detect the Lamb waves. When there is damage, the Lamb wave reflects at the boundary of the damage. The reflection point is on an ellipse with two foci at the actuator and sensor, and this ellipse is tangent to the boundary curve of the damage at the reflection point. The reflection point can be obtained by finding a special point on the ellipse, and this point has the shortest distance to the center of the curvature of the damage boundary curve. As a result, the damage boundary curve can be determined by finding various reflection points, and the envelope of the identified reflection points is employed to represent the shape of the damage. Experiments are conducted on an aluminum plate with 12 piezoceramic transducers to identify the sizes and shapes of bonded masses, which are considered as simulated damages. The experimental results indicate that the proposed method can obtain the size and shape of bonded masses with a relatively small error.
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      Detecting Damage Size and Shape in a Plate Structure Using PZT Transducer Array

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4248279
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    contributor authorLu Guangtao;Li Yourong;Zhou Mingle;Feng Qian;Song Gangbing
    date accessioned2019-02-26T07:36:56Z
    date available2019-02-26T07:36:56Z
    date issued2018
    identifier other%28ASCE%29AS.1943-5525.0000904.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4248279
    description abstractAn algorithm to detect damage size and shape using a lead zirconate titanate (PZT) transducer array for a plate structure is developed in this paper. During the process of detection, the predetermined PZT transducers are chosen as actuators to generate Lamb waves, and others are chosen as sensors to detect the Lamb waves. When there is damage, the Lamb wave reflects at the boundary of the damage. The reflection point is on an ellipse with two foci at the actuator and sensor, and this ellipse is tangent to the boundary curve of the damage at the reflection point. The reflection point can be obtained by finding a special point on the ellipse, and this point has the shortest distance to the center of the curvature of the damage boundary curve. As a result, the damage boundary curve can be determined by finding various reflection points, and the envelope of the identified reflection points is employed to represent the shape of the damage. Experiments are conducted on an aluminum plate with 12 piezoceramic transducers to identify the sizes and shapes of bonded masses, which are considered as simulated damages. The experimental results indicate that the proposed method can obtain the size and shape of bonded masses with a relatively small error.
    publisherAmerican Society of Civil Engineers
    titleDetecting Damage Size and Shape in a Plate Structure Using PZT Transducer Array
    typeJournal Paper
    journal volume31
    journal issue5
    journal titleJournal of Aerospace Engineering
    identifier doi10.1061/(ASCE)AS.1943-5525.0000904
    page4018075
    treeJournal of Aerospace Engineering:;2018:;Volume ( 031 ):;issue: 005
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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