Flaw Detection on a Tilted Particleboard by Use of the Spec-Radiation Method

Herein, we present a novel approach to the spec-radiation method (a method of acoustical holography) for determining the sound distribution on a tilted particleboard by calculating a single plane and rotation in the frequency domain. The tilted particleboard allows testing without standing waves bet...

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Main Authors: Andreas Sebastian Schmelt, Jens Twiefel
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/10/23/8513
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author Andreas Sebastian Schmelt
Jens Twiefel
author_facet Andreas Sebastian Schmelt
Jens Twiefel
author_sort Andreas Sebastian Schmelt
collection DOAJ
description Herein, we present a novel approach to the spec-radiation method (a method of acoustical holography) for determining the sound distribution on a tilted particleboard by calculating a single plane and rotation in the frequency domain. The tilted particleboard allows testing without standing waves between the transmitter and the particleboard. This eliminates the need to evaluate several parallel planes and to search for values belonging to the tilted particleboard. The numerical requirements can be optimally exploited through a combination with a flaw detectability enhancement method. The results are supported by experiments on a wooden particleboard with flaw imitations. Finally, we showed, through a comparison with the usual procedure of identifying a flaw (calculating many parallel planes and then selecting the data belonging to the tilted plane), that the calculation of the tilted plane is up to 98.5% faster and improves the detectability of flaws in a tilted particleboard.
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spelling doaj.art-aabc8026968840c58c84ac9013cb50902023-11-20T22:44:48ZengMDPI AGApplied Sciences2076-34172020-11-011023851310.3390/app10238513Flaw Detection on a Tilted Particleboard by Use of the Spec-Radiation MethodAndreas Sebastian Schmelt0Jens Twiefel1Institute of Dynamic and Vibration Research, Leibniz University of Hannover, 30823 Garbsen, GermanyInstitute of Dynamic and Vibration Research, Leibniz University of Hannover, 30823 Garbsen, GermanyHerein, we present a novel approach to the spec-radiation method (a method of acoustical holography) for determining the sound distribution on a tilted particleboard by calculating a single plane and rotation in the frequency domain. The tilted particleboard allows testing without standing waves between the transmitter and the particleboard. This eliminates the need to evaluate several parallel planes and to search for values belonging to the tilted particleboard. The numerical requirements can be optimally exploited through a combination with a flaw detectability enhancement method. The results are supported by experiments on a wooden particleboard with flaw imitations. Finally, we showed, through a comparison with the usual procedure of identifying a flaw (calculating many parallel planes and then selecting the data belonging to the tilted plane), that the calculation of the tilted plane is up to 98.5% faster and improves the detectability of flaws in a tilted particleboard.https://www.mdpi.com/2076-3417/10/23/8513spec-radiationangular spectrumflaw detectionacoustic holographytilted particleboard
spellingShingle Andreas Sebastian Schmelt
Jens Twiefel
Flaw Detection on a Tilted Particleboard by Use of the Spec-Radiation Method
Applied Sciences
spec-radiation
angular spectrum
flaw detection
acoustic holography
tilted particleboard
title Flaw Detection on a Tilted Particleboard by Use of the Spec-Radiation Method
title_full Flaw Detection on a Tilted Particleboard by Use of the Spec-Radiation Method
title_fullStr Flaw Detection on a Tilted Particleboard by Use of the Spec-Radiation Method
title_full_unstemmed Flaw Detection on a Tilted Particleboard by Use of the Spec-Radiation Method
title_short Flaw Detection on a Tilted Particleboard by Use of the Spec-Radiation Method
title_sort flaw detection on a tilted particleboard by use of the spec radiation method
topic spec-radiation
angular spectrum
flaw detection
acoustic holography
tilted particleboard
url https://www.mdpi.com/2076-3417/10/23/8513
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