Matching pursuit-based signal processing method to improve ultrasonic flaw detection in NDT applications

Ruiz, N.; Vera, Pedro Sánchez; Curpian, J; Martínez, Delio Aristizabal; Mata, R.

doi:10.1049/el:20030262

Cited by 12 publications

(2 citation statements)

References 4 publications

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“…The implementation of ultrasonic techniques for concrete evaluation has been hampered by the heterogeneous nature of concrete, which leads to the scattering or attenuation of stress waves and limits the penetration of the stress waves generated by a conventional electro-acoustic transmitter [1][2][3]. The present high voltage impulse generator such as panametrics 5058PR etc are not suitable for field measurement for its disadvantage of valuableness and heaviness.…”

Section: Introductionmentioning

confidence: 99%

A high-power ultrasonic pulser-receiver for concrete non- destructive testing

Han¹,

Xie²,

Yin³

et al. 2015

Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015

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Abstract. In order to improve the ultrasonic test penetration in the concrete members, a kind of high-power ultrasonic pulser-receiver was designed. With the instantaneous high-voltage pulse by capacitor of charging and discharging, the transformed voltage can reach a peak of 800v. A specific receiver was designed to realize multi-channel synchronous acquisition, storage and data transfer.Experimental results prove that a good SNR (Signal to Noise Ratio) signal can be obtained. Along with other advantages such as easy manufacture and operation, cost efficiency, the proposed scheme may have a wide application in the non-destructive ultrasonic evaluation of concrete members.

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Section: Introductionmentioning

confidence: 99%

A high-power ultrasonic pulser-receiver for concrete non- destructive testing

Han¹,

Xie²,

Yin³

et al. 2015

Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015

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“…The existing matching pursuit approach [9][10][11] has been mainly developed for signal compression and approximation. In this investigation, a two-stage matching pursuit algorithm is developed to accurately estimate parameters characterizing pulses which are then used for the estimation of damage location and size.…”

Section: Introductionmentioning

confidence: 99%

The matching pursuit approach based on the modulated Gaussian pulse for efficient guided-wave damage inspection

Hong

Sun

Kim³

2005

Smart Mater. Struct.

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The success of the guided-wave damage inspection technology depends not only on the generation and measurement of desired waveforms but also on the signal processing of the measured waves, but less attention has been paid to the latter. This research aims to develop an efficient signal processing technique especially suitable for the current guided-wave technology. To achieve this objective, the use of a two-stage matching pursuit approach based on the Gabor dictionary is proposed. Instead of truncated sine pulses commonly used in waveguide inspection, Gabor pulses, the modulated Gaussian pulses, are chosen as the elastic energy carrier to facilitate the matching pursuit algorithm. To extract meaningful waves out of noisy signals, a two-stage matching pursuit strategy is developed, which consists of the following: rough approximations with a set of predetermined parameters characterizing the Gabor pulse, and fine adjustments of the parameters by optimization. The parameters estimated from measured longitudinal elastic waves can be then directly used to assess not only the location but also the size of a crack in a rod. For the estimation of the crack size, in particular, Love's theory is incorporated in the matching pursuit analysis. Several experiments were conducted to verify the validity of the proposed approach in damage assessment.

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Matching pursuit decomposition for high-resolution direction of arrival

Ghofrani

2013

Multidim Syst Sign Process

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Matching pursuit-based signal processing method to improve ultrasonic flaw detection in NDT applications

Cited by 12 publications

References 4 publications

A high-power ultrasonic pulser-receiver for concrete non- destructive testing

A high-power ultrasonic pulser-receiver for concrete non- destructive testing

The matching pursuit approach based on the modulated Gaussian pulse for efficient guided-wave damage inspection

Matching pursuit decomposition for high-resolution direction of arrival

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