Clusters of Shaped Ultrasonic Transducers for Lamb Waves' DoA Estimation

被引：4

作者：

Dibiase, Marco ^{[1
]}

De Marchi, Luca ^{[2
]}

机构：

[1] Univ Bologna, Dept Comp Sci & Engn, I-40136 Bologna, Italy

[2] Univ Bologna, Dept Elect Elect & Informat Engn Guglielmo Marcon, I-40136 Bologna, Italy

来源：

APPLIED SCIENCES-BASEL | 2020年 / 10卷 / 22期

关键词：

direction of arrival estimation; acoustic source location; piezoelectric sensors; shaped sensors; lamb waves; radon transform; ACOUSTIC SOURCE LOCALIZATION; IMPACT DETECTION; PROPAGATION; ERROR; PLATE;

D O I：

10.3390/app10228150

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The direction of arrival (DoA) estimation of Lamb waves is a fundamental task to locate acoustic events, such as those caused by impacts in plates or shells. To perform this task, a novel cluster of piezoelectric sensors is presented in this work. The designed cluster is composed by three irregularly shaped patch transducers (P1, P2 e P3). This is in contrast with the approaches that are typically presented in literature which are based on isotropic piezo-disks. In our approach, the transducers are shaped with a procedure based on the Radon Transform, so that the difference in time of arrival (DToA) of the Lamb waves at patches P1 and P2 is linearly related to the DoA, while P3 is designed so that it is possible to perform the estimation of DoA without knowing the actual wave velocity. The numerical validation shows that the performance in the DoA estimation achieved by means of the proposed cluster compares favorably with respect to clusters of conventional sensors, even in the case of noise-affected measurements.

引用

页码：1 / 14

页数：14

共 26 条

[11]

Gaskill J.D., 1978, Linear systems, Fourier transforms, and optics], V576

[12]

Giurgiutiu V., 2005, Shock and Vibration Digest, V37, P83, DOI 10.1177/0583102405052561

[13]

Giurgiutiu V, 2005, J INTEL MAT SYST STR, V16, P291, DOI 10.1177/1045389X05050106

[14] NOTES ON USE OF PROPAGATION OF ERROR FORMULAS [J].

KU, HH .

JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS SECTION C-ENGINEERING AND INSTRUMENTATION, 1966, C 70 (04) :263-+

[15]

Kundu T., 2012, P 6 EUR WORKSH STRUC, p1?9

[16] Acoustic source localization in anisotropic plates [J].

Kundu, Tribikram ;

Nakatani, Hayato ;

Takeda, Nobuo .

ULTRASONICS, 2012, 52 (06) :740-746

[17]

Le Maître OP, 2010, SCI COMPUT, P1, DOI 10.1007/978-90-481-3520-2_1

[18] Acoustic source localization in an anisotropic plate without knowing its material properties - A new approach [J].

Park, Won Hyun ;

Packo, Pawel ;

Kundu, Tribikram .

ULTRASONICS, 2017, 79 :9-17

[19] The anisotropic propagation of ultrasonic guided waves in composite materials and implications for practical applications [J].

Putkis, O. ;

Dalton, R. P. ;

Croxford, A. J. .

ULTRASONICS, 2016, 65 :390-399

[20] A new wave front shape-based approach for acoustic source localization in an anisotropic plate without knowing its material properties [J].

Sen, Novonil ;

Kundu, Tribikram .

ULTRASONICS, 2018, 87 :20-32

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