Structural health monitoring (SHM) based on guided waves allows assessing the health of a structure due to the sensitivity to the occurrence of delamination. However, wave propagation presents several complexities for effective damage identification in composite structures. An efficient implementation of a guided wave-based SHM system requires an accurate analysis of collected data to obtain a useful detection. This paper is concerned with the identification of small emerging delaminations in composite structural components using a sparse array of surface ultrasonic transducers. An ultrasonic-guided wave tomography technique focused on impact damage detection in composite plate-like structures is presented. A statistical damage index approach is adopted to interpret the recorded signals, and a subsequent graphic interpolation is implemented to reconstruct the damage appearance. Experimental tests carried out on a typical composite structure demonstrated the effectiveness of the developed technique with the aim to investigate the presence and location of damage using simple imaging reports and a limited number of measurements. A traditional ultrasonic inspection (C-scan) is used to assess the methodology. © 2015 Society of Photo-Optical Instrumentation Engineers (SPIE).

Damage detection tomography based on guided waves in composite structures using a distributed sensor network / Memmolo, Vittorio; Maio, Leandro; Boffa, NATALINO DANIELE; Monaco, Ernesto; Ricci, Fabrizio. - In: OPTICAL ENGINEERING. - ISSN 0091-3286. - 55:1(2016). [10.1117/1.OE.]

Damage detection tomography based on guided waves in composite structures using a distributed sensor network

MEMMOLO, VITTORIO;MAIO, LEANDRO;BOFFA, NATALINO DANIELE;MONACO, ERNESTO;RICCI, FABRIZIO
2016

Abstract

Structural health monitoring (SHM) based on guided waves allows assessing the health of a structure due to the sensitivity to the occurrence of delamination. However, wave propagation presents several complexities for effective damage identification in composite structures. An efficient implementation of a guided wave-based SHM system requires an accurate analysis of collected data to obtain a useful detection. This paper is concerned with the identification of small emerging delaminations in composite structural components using a sparse array of surface ultrasonic transducers. An ultrasonic-guided wave tomography technique focused on impact damage detection in composite plate-like structures is presented. A statistical damage index approach is adopted to interpret the recorded signals, and a subsequent graphic interpolation is implemented to reconstruct the damage appearance. Experimental tests carried out on a typical composite structure demonstrated the effectiveness of the developed technique with the aim to investigate the presence and location of damage using simple imaging reports and a limited number of measurements. A traditional ultrasonic inspection (C-scan) is used to assess the methodology. © 2015 Society of Photo-Optical Instrumentation Engineers (SPIE).
2016
Damage detection tomography based on guided waves in composite structures using a distributed sensor network / Memmolo, Vittorio; Maio, Leandro; Boffa, NATALINO DANIELE; Monaco, Ernesto; Ricci, Fabrizio. - In: OPTICAL ENGINEERING. - ISSN 0091-3286. - 55:1(2016). [10.1117/1.OE.]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/620049
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