Acoustic emission and acousto-ultrasonic techniques for wood and wood-based composites: a review

Kawamoto, Sumire; Williams, Ralph E.

doi:10.2737/fpl-gtr-134

Cited by 45 publications

(38 citation statements)

References 37 publications

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“…A method that has already proven its success is extraction of the signals based on corresponding wave features. In industrial lumber drying, for example, the amplitude and energy of AE signals were used to pinpointing wood checking [88][89][90][91][92].…”

Section: Ae Feature Extractionmentioning

confidence: 99%

Acoustic Emissions to Measure Drought-Induced Cavitation in Plants

et al. 2016

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Acoustic emissions are frequently used in material sciences and engineering applications for structural health monitoring. It is known that plants also emit acoustic emissions, and their application in plant sciences is rapidly increasing, especially to investigate drought-induced plant stress. Vulnerability to drought-induced cavitation is a key trait of plant water relations, and contains valuable information about how plants may cope with drought stress. There is, however, no consensus in literature about how this is best measured. Here, we discuss detection of acoustic emissions as a measure for drought-induced cavitation. Past research and the current state of the art are reviewed. We also discuss how the acoustic emission technique can help solve some of the main issues regarding quantification of the degree of cavitation, and how it can contribute to our knowledge about plant behavior during drought stress. So far, crossbreeding in the field of material sciences proved very successful, and we therefore recommend continuing in this direction in future research.

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Section: Ae Feature Extractionmentioning

confidence: 99%

Acoustic Emissions to Measure Drought-Induced Cavitation in Plants

et al. 2016

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“…[18][19][20][21][22][23][24][25][26] Bucur's book provides an extensive review on this topic. 24 Similarly there are books and review papers on NDT of wood, that includes the use of acoustics.…”

Section: Introductionmentioning

confidence: 99%

Measurement of stiffness of standing trees and felled logs using acoustics: A review

Legg

Bradley

2016

The Journal of the Acoustical Society of America

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This paper provides a review on the use of acoustics to measure stiffness of standing trees, stems, and logs. An outline is given of the properties of wood and how these are related to stiffness and acoustic velocity throughout the tree. Factors are described that influence the speed of sound in wood, including the different types of acoustic waves which propagate in tree stems and lumber. Acoustic tools and techniques that have been used to measure the stiffness of wood are reviewed. The reasons for a systematic difference between direct and acoustic measurements of stiffness for standing trees, and methods for correction, are discussed. Other techniques, which have been used in addition to acoustics to try to improve stiffness measurements, are also briefly described. Also reviewed are studies which have used acoustic tools to investigate factors that influence the stiffness of trees. These factors include different silvicultural practices, geographic and environmental conditions, and genetics.

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“…Technically, acoustic emission (AE) is defi ned as the class of phenomena in which transient elastic waves are generated by the rapid release of energy from a localized source or sources within a material. The term also applies to the transient elastic waves so generated (Kawamoto, Williams, 2002). This paper focuses on the feasibility of the AE techniques for monitoring defects caused by corrosion.…”

Section: Introductionmentioning

confidence: 99%

Visualisation of Corrosion Acoustic Signals Using Quality Tools

Dostál¹,

Communeau²

2014

Acta Univ. Agric. Silvic. Mendelianae Brun.

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The article deals with the application of chosen quality tools for visualisation of acoustic signals from corrosion process. For continuous monitoring of corrosion the acoustic emission (AE) is used. This is one of the non-destructive testing methods. Using this method it is possible to receive signals and perform basic analysis. For a thorough prediction of process conditions or degradation is necessary to combine this method with other analyzes in the fi eld of statistics, especially quality tools. For these purposes, the control charts are used in this work. Eff ective prediction of corrosion status of the material is very important with regard to damages caused by corrosion worldwide. The objective of this paper is to describe the possibility of signal analysis in Minitab program, where is possible to continuously produce qualitative evaluation by means of quality tools, in this case control charts. The control chart is one of the seven basic tools of quality control. Typically control charts are used for time-series data, though they can be used for data that have logical comparability. This work demonstrates the possibility of use this quality tool for the analysis of corrosion acoustic signals.

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Acoustic emission and acousto-ultrasonic techniques for wood and wood-based composites: a review

Cited by 45 publications

References 37 publications

Acoustic Emissions to Measure Drought-Induced Cavitation in Plants

Acoustic Emissions to Measure Drought-Induced Cavitation in Plants

Measurement of stiffness of standing trees and felled logs using acoustics: A review

Visualisation of Corrosion Acoustic Signals Using Quality Tools

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