Spiral-shaped piezoelectric sensors for Lamb waves direction of arrival (DoA) estimation

被引：14

作者：

De Marchi, L. ^{[1
]}

Testoni, N. ^{[1
]}

Marzani, A. ^{[2
]}

机构：

[1] Bologna Univ Bologna, Dept Elect Elect & Informat Engn DEI, Viale Risorgimento 2, I-40136 Bologna, Italy

[2] Bologna Univ Bologna, Dept Civil Chem Environm & Mat Engn DICAM, Viale Risorgimento 2, I-40136 Bologna, Italy

来源：

SMART MATERIALS AND STRUCTURES | 2018年 / 27卷 / 04期

关键词：

Acoustic source location; piezoelectric transducers; Lamb waves; Radon transform; COMPOSITE STRUCTURES; ACOUSTIC TRANSDUCER; IMPACT DETECTION; IDENTIFICATION; LOCATION; SYSTEM; DAMAGE; ROSETTES; PLATES; PANELS;

D O I：

10.1088/1361-665X/aab19e

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A novel strategy to design piezoelectric sensors suited for direction of arrival (DoA) estimation of incoming Lamb waves is presented in this work. The designed sensor is composed by two piezoelectric patches (P1, P2) bonded on the structure to be inspected. In particular, by exploiting the Radon transform, the proposed procedure computes the shape of P2 given the shape of P1 so that the difference in time of arrival (DToA) of the Lamb waves at the two patches is linearly related to the DoA while being agnostic of the waveguide dispersion curves. With a dedicated processing procedure, the waveforms acquired from the two electrodes and digitized can be used to retrieve the DoA information. Numerical and experimental results show that DoA estimation performed by means of the proposed shaped transducers is extremely robust.

引用

页数：10

共 28 条

[21] Experimental characterization of periodic frequency-steerable arrays for structural health monitoring [J].

Senesi, Matteo ;

Xu, Buli ;

Ruzzene, Massimo .

SMART MATERIALS AND STRUCTURES, 2010, 19 (05)

[22] Impact identification of stiffened composite panels: I. System development [J].

Seydel, R ;

Chang, FK .

SMART MATERIALS & STRUCTURES, 2001, 10 (02) :354-369

[23] Fail-safe sensor distributions for impact detection in composite materials [J].

Staszewski, WJ ;

Worden, K ;

Wardle, R ;

Tomlinson, GR .

SMART MATERIALS & STRUCTURES, 2000, 9 (03) :298-303

[24] Guided Lamb waves for identification of damage in composite structures: A review [J].

Su, Zhongqing ;

Ye, Lin ;

Lu, Ye .

JOURNAL OF SOUND AND VIBRATION, 2006, 295 (3-5) :753-780

[25] A coin size, 40mW, 20 grams sensor node for guided waves detection [J].

Testoni, N. ;

De Marchi, L. ;

Ferraro, A. ;

Marzani, A. .

SENSORS AND SMART STRUCTURES TECHNOLOGIES FOR CIVIL, MECHANICAL, AND AEROSPACE SYSTEMS 2015, 2015, 9435

[26] Identifying impacts in composite plates with piezoelectric strain sensors, Part II: Experiment [J].

Tracy, M ;

Chang, FK .

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 1998, 9 (11) :929-937

[27] Development of a remote impact damage identification system [J].

Wang, B ;

Takatsubo, J ;

Akimune, Y ;

Tsuda, H .

STRUCTURAL CONTROL & HEALTH MONITORING, 2005, 12 (3-4) :301-314

[28] CROSS CORRELATION IN STRUCTURAL SYSTEMS - DISPERSION AND NONDISPERSION WAVES [J].

WHITE, PH .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1969, 45 (05) :1118-&

← 1 2 3 →