Wave separation: Application for arrival time detection in ultrasonic signals

Avanesians, Patrick; Momayez, Moe

doi:10.1016/j.ultras.2014.08.019

Cited by 15 publications

(7 citation statements)

References 10 publications

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“…For that purpose, the cross correlation method (Leemans & Destain, 2009) was employed to calculate the ΔTOF between ultrasonic signals one hour apart by using a specific software developed in LABVIEW TM 2015 (National Instruments, Austin, TX, USA) and the final ΔTOF for the different salting times was computed. The initial time of flight (TOF 0 ), which corresponds to the raw meat, was calculated through the energy threshold method (Avanesians & Momayez, 2015), using the same software.…”

Section: Ultrasound Experimental Set-upmentioning

confidence: 99%

Non-invasive ultrasonic technology for continuous monitoring of pork loin and ham dry salting

2017

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Online ultrasound measurements were taken using pulse-echo mode in loins (Longissimus dorsi) and hams at different salting times (up to 30days). From the time-domain ultrasonic wave, the time of flight (TOF) was computed as well as its variation between two signals (ΔTOF). A progressive decrease in TOF during dry salting was found, which was linked to the salt gain, water loss and the reduction in sample thickness. Predictive models based on the ultrasonic parameters (ΔTOF and initial time of flight, TOF) correctly classified 85% of the loins and 90% of the hams into 3 groups of salt content (low/medium/high). The results obtained confirm that the use of the ultrasonic pulse-echo technique is of great potential in the non-destructive monitoring of dry salting in pork loins and hams, as well as in the prediction of the salt gain for classification purposes.

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Section: Ultrasound Experimental Set-upmentioning

confidence: 99%

Non-invasive ultrasonic technology for continuous monitoring of pork loin and ham dry salting

2017

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“…Known from practical experience that, time-of-flight obtained via actual measurement may be influenced by various factors, such as interference of environment and accuracy limit of devices [19][20][21][22]. Thus, to make the time-of-flight used in numerical experiments as close to actual measurement value as possible and meanwhile investigate the algorithms' anti-interference, various noises are added to the theoretical value calculated from Eq.…”

Section: Design Of Experiments and Definitions Of Evaluationmentioning

confidence: 99%

Ultrasonic temperature distribution reconstruction for circular area based on Markov radial basis approximation and singular value decomposition

et al. 2015

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“…To get a meaningful result, it is desirable that the first 100ms are not disturbed by reflections. It is possible to sort out specific reflections using wave separation [23]. This approach, however, works for ultrasonic signals because small changes in frequency may be detected with such systems.…”

Section: Introductionmentioning

confidence: 99%

Damping of post-impact vibrations

et al. 2019

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Impacts of solid bodies on rigid plates produce loud noise and strong vibrations. During this impact, flexural waves travel circularly outwards from the point of impact. These waves are used to determine the properties of the impacting body. For accurate location and momentum measurements, it is necessary that the set of flexural waves pass acceleration sensors just once without being disturbed by reflections. Different plate designs are tested with the aim to evaluate the shape, which offers the best damping properties against strong single impact. The investigations showed that the damping properties of the plates are significantly better with a star-shaped design, which is equipped with a damping layer. The novelty presented here is that the damping properties are significantly increased using a star-shaped plate with specially power law formed and damped edges. The work offers a solution to get significant better damping properties and a better signal for impact investigations. The results demonstrate that it is a promising approach for an impact detection system, which could be equally applicable to acoustic damping applications.

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Wave separation: Application for arrival time detection in ultrasonic signals

Cited by 15 publications

References 10 publications

Non-invasive ultrasonic technology for continuous monitoring of pork loin and ham dry salting

Non-invasive ultrasonic technology for continuous monitoring of pork loin and ham dry salting

Ultrasonic temperature distribution reconstruction for circular area based on Markov radial basis approximation and singular value decomposition

Damping of post-impact vibrations

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