Ultrasonic drying of birch veneer

Khmelev, Vladimir N.; Khmelev, Sergey S.; Tsyganok, Sergey N.; Titov, Gennadiy A.

doi:10.1109/edm.2011.6006973

Cited by 3 publications

(2 citation statements)

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“…In wood technology, applications of high-power ultrasound are related to wood processing [2]. Current applications are for drying of lumber, drying of veneer [144], defibering [145], cutting [146], plasticizing [147], extraction improvement, regeneration effects on aged glue resins [148], welding [149] and wood preservation and sterilization. Because of space limitations, in what follows, attention is focused only on two main aspects: wood drying and wood sterilization.…”

Section: Introductionmentioning

confidence: 99%

A Review on Acoustics of Wood as a Tool for Quality Assessment

Bucur

2023

Forests

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Acoustics is a field with significant application in wood science and technology for the classification and grading, through non-destructive tests, of a large variety of products from standing trees to building structural elements and musical instruments. In this review article the following aspects are treated: (1) The theoretical background related to acoustical characterization of wood as an orthotropic material. We refer to the wave propagation in anisotropic media, to the wood anatomic structure and propagation phenomena, to the velocity of ultrasonic waves and the elastic constants of an orthotropic solid. The acoustic methods for the determination of the elastic constants of wood range from the low frequency domain to the ultrasonic domain using direct contact techniques or ultrasonic spectroscopy. (2) The acoustic and ultrasonic methods for quality assessment of trees, logs, lumber and structural timber products. Scattering-based techniques and ultrasonic tomography are used for quality assessment of standing trees and green logs. The methods are based on scanning stress waves using dry-point-contact ultrasound or air-coupled ultrasound and are discussed for quality assessment of structural composite timber products and for delamination detection in wood-based composite boards. (3) The high-power ultrasound as a field with important potential for industrial applications such as wood drying and other applications. (4) The methods for the characterization of acoustical properties of the wood species used for musical instrument manufacturing, wood anisotropy, the quality of wood for musical instruments and the factors of influence related to the environmental conditions, the natural aging of wood and the effects of long-term loading by static or dynamic regimes on wood properties. Today, the acoustics of wood is a branch of wood science with huge applications in industry.

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Section: Introductionmentioning

confidence: 99%

A Review on Acoustics of Wood as a Tool for Quality Assessment

Bucur

2023

Forests

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“…As an example of a typical ultrasonic vibration method, there are impregnating a bundle of glass fibers or carbon fibers with liquid by soaking the fibers in a liquid and applying ultrasonic vibration directly. [20][21][22] However, there is a possibility that impurities will be mixed in the sample by bringing the ultrasonic vibration source directly into contact with the sample. Moreover, it is difficult to impregnate meshes with high-viscosity liquids.…”

Section: Introductionmentioning

confidence: 99%

Deformation and impregnation of droplets containing abrasive grains using intense aerial ultrasonic waves

Nakayama¹,

Asami²,

Miura³

2018

Jpn. J. Appl. Phys.

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For efficient impregnation, it is important to improve the wettability between the samples used. However, the traditional impregnation method using ultrasonic waves suffers from the following problems: that the vibration source must be brought into direct contact with the sample and impregnation with liquids with high viscosities is difficult. Also, the method has the possibility that impurities will be mixed in the sample when bringing the ultrasonic vibration source directly into contact with the sample. Therefore, we investigated the use of intense aerial ultrasonic waves as a new noncontact method of impregnating into meshes while observing the extent of the droplet spread. In this study, we observed droplet deformation and impregnation when changing the droplet volume and input power and after installing a sound waveguide for focusing the sound wave. Consequently, we were consequently able to demonstrate the impregnation of droplets into the mesh.

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Transitioning to data-driven quality control in industrial veneer drying: a case study

Qiu

Cool

2023

Eur. J. Wood Prod.

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Ultrasonic drying of birch veneer

Cited by 3 publications

References 0 publications

A Review on Acoustics of Wood as a Tool for Quality Assessment

A Review on Acoustics of Wood as a Tool for Quality Assessment

Deformation and impregnation of droplets containing abrasive grains using intense aerial ultrasonic waves

Transitioning to data-driven quality control in industrial veneer drying: a case study

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