Read e-book online Nondestructive Characterization and Imaging of Wood PDF

By Voichita Bucur

ISBN-10: 3642078605

ISBN-13: 9783642078606

ISBN-10: 3662089866

ISBN-13: 9783662089866

The topic of nondestructive review of wooden houses has its starting place within the necessity to resolve useful difficulties. This publication comprehensively stories various points of imaging and nondestructive characterization of wooden items starting from bushes to the main advanced wood-based composite. The textual content is of specific curiosity to those that are excited about the learn of wooden as an engineering fabric for basic learn or sensible software. It provides the imaging of the interior constitution of wooden with equipment in accordance with the propagation of electromagnetic waves, elastic waves and warmth, and imaging with nuclear particle radiation established methods.

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Extra resources for Nondestructive Characterization and Imaging of Wood

Sample text

Details of the structure of the annual growth rings are clearly visible, and tracheids, rays and resin canals can be observed on the Pinus sylvestris specimen. For Eucaliptus delegatensis, a collapse check in the highdensity zone is observed. The device for X-ray microtomography of wood was attached to an X-ray diffractometer. The schematic representation of this device for X-ray microtomography is shown in Fig. 22. 21. Reconstructed images of the anatomic structure of Pinus sylvestris (Davis et al.

The fan beam system is a more complex system and has 30 detectors. The source is 185GBq and 8000 counts/s, mounted on a metallic ring with a 100cm diameter. 4°. The fan system has the same spatial and contrast resolution as the parallel system. The algorithm reconstruction for the PC time is 4 min for one profile. For larger trees the total examination time is about 1 h. The tomograms can be coded by color or by a gray scale, as can be seen in Figs. 18. 1 Growth Rate Assessment Using computed tomography Onoe et al.

11. CT numbers surrounded by air are inferior to those surrounded by granular sugar. 4 Applications The field of applications of computed tomography is very large, including building inspection, wood preservation, stability of wooden construction elements, preservation of monuments, new constructions, pole inspection, inspection of wooden toys, tree examination and inspection, arboriculture, growth rate assessment, wood quality assessment, forest sciences, wood technology, wood biology, dendrochronology, dendroarcheology, climatology, geomor- Applications 41 phology, phytopathology, tropical trees, plantation trees, and wood products (Rinn 1991).

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Nondestructive Characterization and Imaging of Wood by Voichita Bucur

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