Nondestructive Testing Technique to Quantify Deterioration from Marine Borer Attack in Sitka Spruce and Western Hemlock Logs PDF Download
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Author: Robert Jon Ross
Publisher:
ISBN:
Category : Marine borers
Languages : en
Pages : 8
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Book Description
Stress-wave nondestructive evaluation (NDE) techniques are used widely in the forest products industry--from the grading of wood veneer to inspection of timber structures. Inspection professionals frequently use stress-wave NDE techniques to locate internal voids and decayed or deteriorated areas in large timbers. Although these techniques have proven useful, little information exists concerning the relationship between stress-wave parameters and deterioration observed as a consequence of marine borer attack. In this pilot test, we examined the relationship between stress-wave transmission time and the quality of wood in Sitka spruce and western hemlock logs that had varying degrees of deterioration as a consequence of attack from marine borers. Stress-wave transmission time, perpendicular to grain, was measured at several locations on each log. The logs were then sawn into lumber, which was then visually evaluated. A relationship was observed between stress-wave transmission time and deterioration of the logs and the yield of lumber from the logs.
Author: Robert Jon Ross
Publisher:
ISBN:
Category : Marine borers
Languages : en
Pages : 8
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Book Description
Stress-wave nondestructive evaluation (NDE) techniques are used widely in the forest products industry--from the grading of wood veneer to inspection of timber structures. Inspection professionals frequently use stress-wave NDE techniques to locate internal voids and decayed or deteriorated areas in large timbers. Although these techniques have proven useful, little information exists concerning the relationship between stress-wave parameters and deterioration observed as a consequence of marine borer attack. In this pilot test, we examined the relationship between stress-wave transmission time and the quality of wood in Sitka spruce and western hemlock logs that had varying degrees of deterioration as a consequence of attack from marine borers. Stress-wave transmission time, perpendicular to grain, was measured at several locations on each log. The logs were then sawn into lumber, which was then visually evaluated. A relationship was observed between stress-wave transmission time and deterioration of the logs and the yield of lumber from the logs.
Author: Robert Jon Ross
Publisher:
ISBN:
Category : Marine borers
Languages : en
Pages : 8
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Book Description
Stress-wave nondestructive evaluation (NDE) techniques are used widely in the forest products industry--from the grading of wood veneer to inspection of timber structures. Inspection professionals frequently use stress-wave NDE techniques to locate internal voids and decayed or deteriorated areas in large timbers. Although these techniques have proven useful, little information exists concerning the relationship between stress-wave parameters and deterioration observed as a consequence of marine borer attack. In this pilot test, we examined the relationship between stress-wave transmission time and the quality of wood in Sitka spruce and western hemlock logs that had varying degrees of deterioration as a consequence of attack from marine borers. Stress-wave transmission time, perpendicular to grain, was measured at several locations on each log. The logs were then sawn into lumber, which was then visually evaluated. A relationship was observed between stress-wave transmission time and deterioration of the logs and the yield of lumber from the logs.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 70
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Book Description
Author: San Francisco Bay Marine Piling Committee
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 410
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Book Description
Author: Michael A. Ritter
Publisher: Datamotion Publishing LLC
ISBN: 9781937299095
Category : Wooden bridges
Languages : en
Pages : 916
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Book Description
This report presents a comprehensive analysis of the design, construction, inspection, and maintenance of timber bridges.
Author: Matt Crossman
Publisher: Thomas Telford
ISBN: 9780727732835
Category : Business & Economics
Languages : en
Pages : 356
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Book Description
This informative manual has been designed to provide guidance on the principal issues surrounding the use of timber in coastal and river engineering. For centuries timber has traditionally been used for the construction of a wide range of coastal and river structures including: groynes, jetties, lock gates, navigation aids and riverbank protection. It is an attractive choice of construction material because it is renewable, is easy to use, repair and recycle, has a high strength/weight ratio and is visually appealing.
Author: A. Stokes
Publisher: Springer Science & Business Media
ISBN: 9401734690
Category : Science
Languages : en
Pages : 411
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Book Description
This publication comprises the proceedings of the first International Conference devoted to the structural roots of trees and woody plants. 'The Supporting Roots - Structure and Function,' 20-24 July 1998, Bordeaux, France. The meeting was held under the auspices ofIUFRO WPS 2. 01. 13 'Root Physiology and Symbiosis,' and its aim was to bring together scientific researchers, foresters and arboriculturalists, to discuss current problems in structural root research and disseminate knowledge to an audience from a wide disciplinary background. For the first time in an international conference, emphasis was placed on presenting recent reseach in the field of tree anchorage mechanics and root biomechanics. The way in which tree stability can be affected by root system symmetry and architecture was addressed, as well as how movement during wind sway can influence the development and shape of woody roots. The role of different nursery and planting techniques was discussed, in relation to effects on root system form and development. Root response to different environmental stresses, including water, temperature, nutrient and mechanical stress was addressed in detail. The structure and function of woody roots was also considered at different levels, from coarse to fine roots, with several papers discussing the interaction between roots and the rhizosphere. One of the conference highlights was the presentation of new methods in root research, by a series of workshops held at LRBB-INRA, Pierroton, on the northern border of the Gascony forest.
Author: Peter Koch
Publisher:
ISBN:
Category : Forest products
Languages : en
Pages : 944
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Book Description
Author: Tom Gray Lovering
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 100
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Book Description
Item 624
Author: John Alden
Publisher: Springer Science & Business Media
ISBN: 9780306444807
Category : Medical
Languages : en
Pages : 590
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Book Description
''Required reading for forest scientists.'' -Northeastern Naturalist
