Reducing the effect of wave dispersion in a timber pole based on transversely isotropic material modelling

被引：13

作者：

Subhani, Mahbube ^{[1
]}

Li, Jianchun ^{[2
]}

Samali, Bijan ^{[3
]}

Crews, Keith ^{[2
]}

机构：

[1] Deakin Univ, Sch Engn, Geelong, Vic 3216, Australia

[2] Univ Technol Sydney, Ctr Built Infrastruct Res, Sydney, NSW 2007, Australia

[3] Univ Western Sydney, Inst Infrastruct Engn, Penrith, NSW 1797, Australia

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 102卷

基金：

澳大利亚研究理事会;

关键词：

Timber; Anisotropic materials; Non-destructive testing; Guided wave; Dispersion; Transversely isotropic material; ORTHOTROPIC CYLINDERS; ULTRASONIC-WAVES; PROPAGATION; MOTION; GUIDES; PILES;

D O I：

10.1016/j.conbuildmat.2015.10.010

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Round timbers are used for telecommunication and power distribution networks, jetties, piles, short span bridges etc. To assess the condition of these cylindrical shape timber structures, bulk and elethentary wave theory are usually used. Even though guided wave can represents the actual wave behaviour, a great deal complexity exists to model stress wave propagation within an orthotropic media, such as timber. In this paper, timber is modelled as transversely isotropic material without compromising the accuracy to a great extent. Dispersion curves and mode shapes are used to Propose an experimental set up in terms of the input frequency and bandwidth of the signal, the orientation of the sensor and the distance between the sensors in order to reduce the effect of the dispersion in the output signal. Some example based on the simulated signal is also discussed to evaluate the proposed experimental set up. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：985 / 998

页数：14

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