Damage of bamboo and wooden materials based on linear elastic fracture mechanics in garden design

Tang, Haiyan

doi:10.3221/igf-esis.35.53

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…The investigation of the elastic properties of bamboo and GluBan through non-destructive tests has been little studied, whereas studies on CLB have not been found at all [12,13]. There are several types of non-destructive testing studies that claim that, among many testing methods and techniques, non-destructive methods have gained special interest [14].…”

Section: Introductionmentioning

confidence: 99%

Determination of Elastic Constants of Cross-Laminated Bamboo (CLB) through Non-Destructive Testing

Carrasco,

Ramos,

Moura

et al. 2023

KEM

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The aim of this work is the evaluation by non-destructive impulse excitation tests, the modulus of elasticity (E) and the transversal deformation modulus (G) of cross laminated bamboo (CLB). Tests were performed on twenty-three CLB specimens measuring: 12 mm (height), 40 mm (width) and 12 mm (length). Twelve specimens have two lamellas with fibers at 0 °, longitudinal direction, and one layer with fibers at 90 °, normal direction (N) and the other eleven specimens have two layers in the normal direction and one in the longitudinal direction (L). The tests were performed using the Sonelastic apparatus indicated for the estimation of the dynamic modulus of elasticity and the damping of materials by the impulse excitation technique. A software attached to the apparatus analyzes the acoustic wave generated, and from it, the dynamic modulus of elasticity is determined. In order to verify the significance of this estimation, semi-destructive, three-point bending tests were performed in a universal test machine, determining E and G. It was concluded that the estimation of the modulus of elasticity is very significant when compared with the semi-destructive tests, and this method can be used to estimate the elasticity modulus of the CLB with high precision (R2 = 99% and p-value <0.001). Modulus of elasticity in the longitudinal direction were five times larger than those in the normal direction.

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Section: Introductionmentioning

confidence: 99%

Determination of Elastic Constants of Cross-Laminated Bamboo (CLB) through Non-Destructive Testing

Carrasco,

Ramos,

Moura

et al. 2023

KEM

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“…In the construction industry and related field, several characteristics of different structure, structural elements, substructure and construction materials are numerically, theoretically and experimentally reported in the literature [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19], but little research has been done on timber structure design. A timber structure state of art has numerically been investigated, to understand seismic resistance by the evaluation of the load, displacement and stress have been applied on the timber structures [1].…”

mentioning

confidence: 99%

“…An investigation has been made comparing the behavior of laterally loaded round and squared timber bolted joints [2]. A research work on damage of bamboo and wooden materials based on linear elastic fracture mechanics has been reported [3]. The collapse prediction and non-linear behavior of the T-joint have experimentally and numerically been investigated [4].…”

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confidence: 99%

Timber beam seismic design – A numerical simulation

Namdar¹,

Dong

Liu

2018

Frattura Ed Integrità Strutturale

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In order to design a seismic timber beam, the effect of near-fault ground motion on timber beam has numerically been investigated, with reference to small displacement theory. The simulated near-fault ground motion is applied on the fixed base of a timber frame model. The beam is placed in single span of a timber frame. The beam has two different length sizes of 1.8 and 3.3 meters. The seismic load-displacement, seismic load-strain and strain-displacement have been calculated for all models and shown in graphs. The beam is designed with nonlinear analysis method and some mechanical properties for all models have been used, in numerical analysis. The numerical analysis results indicate that, the inertial interaction, energy dissipation and nonlinear deformation of beams in timber frames have directly related with frame span. In beams with a smaller length, higher seismic loading caused lower displacement. The displacement is reduced by reducing the length of the beam. The inertial interaction, energy dissipation and nonlinear deformation are changed respect to the length of the beam. The innovation of this paper is to develop cycling graphs by using ABAQUS, to improve design of timber frame and give an adequate explanation of seismic behavior of timber beam.

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Recent advancements in nanotechnology application on wood and bamboo materials: A review

Paul

Gaff

Tesařová

et al. 2023

Nanotechnology Reviews

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Wood and bamboo are the greenest renewable materials used for construction, furniture, and decor from the ancient ages. However, wood and bamboo have intrinsic faults like durability, ductility, physical and mechanical strength, and stability, limiting their applications in the industry. On the other hand, nanotechnology is a popular technology having numerous applications in different fields, resulting in a significant increase in expectations among academics, investors, the government, and industries. In contrast, nanotechnology can protect wood and bamboo from extreme conditions (bacteria, climate, etc.) by improving physicochemical characteristics because of its unique features. Nowadays, the trend of merging nanotechnology and forest industries to overcome the limitations mentioned above and get economically sustainable materials for construction, furniture manufacturing, flexible sensors developments, energy storage, battery manufacturing, and many more is increasing. Presently, several reviews on wood and bamboo modification by nanoparticles and nanomaterials have already been published. But, at this time, this study is essential because it aims to provide a brief guide about the recently developed eco-friendly sustainable materials from wood and bamboo, their uses, and how they can affect people’s daily life and helps to point out the gap of the current knowledge. In addition, we briefly describe the conventional and modern modification methods, including the influence of nanomaterials on wood and bamboo structures. This article is outlined as follows: The first phase of the review deals with wood and bamboo modification methods. The second phase explains how the modification method improves the properties of wood and bamboo materials, and the last step will describe the recent innovation of wood and bamboo materials.

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Damage of bamboo and wooden materials based on linear elastic fracture mechanics in garden design

Cited by 3 publications

References 12 publications

Determination of Elastic Constants of Cross-Laminated Bamboo (CLB) through Non-Destructive Testing

Determination of Elastic Constants of Cross-Laminated Bamboo (CLB) through Non-Destructive Testing

Timber beam seismic design – A numerical simulation

Recent advancements in nanotechnology application on wood and bamboo materials: A review

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