Nondestructive Evaluation of Biologically Degraded Wood

Ross, Robert; DeGroot, Rodney C.; Nelson, William J. H.

doi:10.1007/978-1-4615-2574-5_69

Cited by 14 publications

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“…Nondestructive evaluation (NDE) is the assessment of a material's properties without damaging its end use (Ross et al 1998). The oldest nondestructive evaluation of wood was visual inspection, mostly used for classification of load-carrying members (Bucur 2006).…”

Section: Introductionmentioning

confidence: 99%

Prediction of Bending Properties for Turkish Red Pine (Pinus brutia Ten.) Lumber using Stress Wave Method

Güntekin¹,

Emiroglu²,

Yılmaz³

2012

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Bending properties of Turkish red pine (Pinus brutia Ten.) lumber pieces were predicted using the stress wave method. The lumber samples were taken from 30-to 80-year-old red pine trees harvested from a southwest site in Turkey. MTG timber grader was utilized to predict modulus of elasticity (MOE) and modulus of rupture (MOR) values of lumbers with 40 mm x 90 mm in cross section and 3 meters in length. Static MOE and MOR values of the lumber pieces were determined using a three-point bending test. The coefficient of determination between measured and predicted MOEs was 0.84 and that between dynamic MOE and bending strength was 0.69. However, the coefficient of determination between bending MOE and strength was only 0.45. It seems that dynamic MOE has better prediction capability for bending strength than static MOE. Effects of some variables such as log and visual grades on dynamic MOE values were also determined statistically. Natural frequency of the lumbers showed far more significant effects than other variables. It is apparent that the stress wave method has the potential to predict the bending properties of Turkish red pine lumber.

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Section: Introductionmentioning

confidence: 99%

Prediction of Bending Properties for Turkish Red Pine (Pinus brutia Ten.) Lumber using Stress Wave Method

Güntekin¹,

Emiroglu²,

Yılmaz³

2012

BioResources

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“…Nondestructive evaluation of materials is, by definition, the science of identifying the physical and mechanical properties of a piece of material without altering its end use capabilities and using this information to make decisions regarding its appropriate application. Such evaluations rely on nondestructive testing technologies (NDT) to provide accurate information pertaining to the properties, performance, or condition of the material in question (Ross et al 1998). Currently, worldwide research and development efforts are underway to examine the potential use of a wide range of NDT techniques for evaluating standing trees and wood members.…”

Section: Introductionmentioning

confidence: 99%

Application of Nondestructive Methods to Evaluate Mechanical Properties of 32-Year-Old Taiwan Incense Cedar (Calocedrus formosana) Wood

2012

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The objective of this work was to assess the physical and mechanical properties of standing Taiwan incense cedar (Calocedrus formosana) using nondestructive techniques (NDT). In addition, the relationship between characteristics of standing trees and wood properties was established. Results indicated that the velocity values and bending properties decreased as tree height increased. In addition, velocity values of specimens were greater than those of logs and standing trees. After regressive analysis, the correlation coefficients (r) were 0.79 for standing trees and logs and 0.70 for logs and specimens. Not only the velocities measured by ultrasonic wave (V u ), tap tone (V f ), and vibration (V t ) methods, but dynamic MOE also correlated well with the static bending properties of specimens. In addition, the values of dynamic and static MOE showed the following trend: DMOE u > DMOE f > DMOE t > MOE. For all specimens, the r values were found to be 0.92 for MOE and DMOE t , and 0.75 for MOR and DMOE t . Therefore, it was assumed that the nondestructive testing methods can provide basic information about standing trees and specimens for future management practices and utilization of Taiwan incense cedar.

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“…A avaliação não destrutiva dos materiais é a ciência que visa a identifi car suas propriedades físicas e mecânicas, sem alterar as características, utilização fi nal e assim usar essas informações para tomada de decisão em relação às aplicações do material (ROSS et al, 1998). O campo de testes não destrutivos (NDT) e avaliação não destrutiva I Programa de Pós-graduação em Engenharia Florestal (PPGEF), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brasil.…”

Section: Introductionunclassified

Método ultrassônico para estimativa do módulo de elasticidade de madeiras de Pinus taeda tratadas termicamente

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Nondestructive Evaluation of Biologically Degraded Wood

Cited by 14 publications

References 0 publications

Prediction of Bending Properties for Turkish Red Pine (Pinus brutia Ten.) Lumber using Stress Wave Method

Prediction of Bending Properties for Turkish Red Pine (Pinus brutia Ten.) Lumber using Stress Wave Method

Application of Nondestructive Methods to Evaluate Mechanical Properties of 32-Year-Old Taiwan Incense Cedar (Calocedrus formosana) Wood

Método ultrassônico para estimativa do módulo de elasticidade de madeiras de Pinus taeda tratadas termicamente

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