Noncontact, high-resolution ultrasonic imaging of wood samples using coded chirp waveforms

TH Gan, DA Hutchins, RJ Green… - IEEE transactions on …, 2005 - ieeexplore.ieee.org
A noncontact ultrasonic inspection technique has been developed to study the properties of
wood samples in air. The system makes use of two broad bandwidth capacitive transducers …

Differences in acoustic velocity by resonance and transit-time methods in an anisotropic laminated wood medium

SS Chauhan, KM Entwistle, JCF Walker - 2005 - degruyter.com
The influence of inhomogeneity on acoustic velocity measured by a resonance-based
WoodSpec acoustic tool and a transit-time-based Fakopp-2D tool was investigated. Four …

Sensor and dimensions effects in ultrasonic pulse velocity measurements in mortar specimens

P Wiciak, G Cascante, MA Polak - Procedia engineering, 2017 - Elsevier
Abstract Ultrasonic Pulse Velocity (UPV) method is a very popular technique used in Non-
Destructive Testing (NDT) in Civil Engineering. Major benefit of the method is its simplicity …

Sustainable management of very large trees with the use of acoustic tomography

M Dudkiewicz, W Durlak - Sustainability, 2021 - mdpi.com
This manuscript summarizes the process by which large trees are protected in Poland, how
they gain protected status, and the use of acoustic tomography to assess the structural …

[PDF][PDF] Developing a sampling strategy for measuring acoustic velocity in standing Pinus radiata using the treetap time of flight tool

MJ Toulmin, CA Raymond - New Zealand Journal of Forestry …, 2007 - researchgate.net
Acoustic velocity, measured using time of flight tools, provides a nondestructive measure of
wood stiffness in standing trees. In order to assess how best to assess a stand of trees to a …

A comparison of sampling methods for a standing tree acoustic device

JM Mahon Jr, L Jordan, LR Schimleck… - Southern journal of …, 2009 - academic.oup.com
One method of evaluating potential product performance is the use of acoustic tools for
identifying trees with high stiffness. Acoustic velocities for 100 standing loblolly pine (Pinus …

NDT of structural timber members by means of 3D ultrasonic imaging techniques and modelling

O Büyüköztürk, MA Taşdemir, M Krause… - … Testing of Materials and …, 2013 - Springer
The present paper describes the development and first application of ultrasonic imaging of
timber (wood) by means of reconstruction calculation (3D-SAFT; Synthetic Aperture …

[HTML][HTML] Acoustics as a tool for the nondestructive testing of wood

V Bucur - NDT. net, 1999 - ndt.net
The Acoustics of wood is either a part of Wood science and a part of Physical Acoustics for
materials characterization. The elastic characterization of wood with acoustic methods is …

An innovative ultrasonic time-of-flight measurement method using peak time sequences of different frequencies: Part I

SB Jiang, CM Yang, RS Huang… - IEEE Transactions on …, 2010 - ieeexplore.ieee.org
This paper proposes an innovative ultrasonic time of flight (TOF) measurement method with
narrow-band transducers. By introducing the received ultrasonic wave peak time sequences …

An innovative ultrasonic time-of-flight measurement method using peak time sequences of different frequencies—Part II: Implementation

CM Yang, SB Jiang, DY Lin, FM Lu… - IEEE Transactions on …, 2010 - ieeexplore.ieee.org
This paper researches on the implementation of an ultrasonic time-of-flight (TOF) measuring
system by the difference of the peak time sequences (PTSs) of dual frequencies. The …