Wood failure in plywood shear samples measured with image analysis

In the plywood industry, the accepted method for evaluating percent of failed wood in a plywood shear sample has been to use a visual approximation. Image analysis utilizing video scanning and computer digital analysis for automated measurement of the percent wood failure was investigated in this st...

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Bibliographic Details
Published in:Forest products journal 1998-04, Vol.48 (4), p.69-74
Main Authors: Zink, A.G. (Virginia Tech, Blacksburg, VA.), Kartunova, E
Format: Article
Language:English
Subjects:
Applied sciences
Automation
Camcorders
Cameras
COMPUTER SOFTWARE
CONTREPLAQUE
Digitization
Exact sciences and technology
Failure analysis
Forest products industry
IMAGENES
IMAGERIE
IMAGERY
LOGICIEL
Measurement
Methods
PLYWOOD
Polymer industry, paints, wood
PROGRAMAS DE ORDENADOR
Shear strength
Software
Standardization
Studies
TABLEROS CONTRACHAPEADOS
Vision systems
Wood products
Wood-based materials
Wood. Paper. Non wovens
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Summary:In the plywood industry, the accepted method for evaluating percent of failed wood in a plywood shear sample has been to use a visual approximation. Image analysis utilizing video scanning and computer digital analysis for automated measurement of the percent wood failure was investigated in this study. Both a gray scale and a red, green, blue (RGB) system were investigated. Each method provided accurate and rapid measurements of the percent wood failure on the surfaces of the samples when there was a distinct contrast pattern presented by the wood and the glue. However, the measurements using the RGB system were much closer to those recorded by visual estimation even for those samples that lacked diverse contrast patterns
ISSN:0015-7473
2376-9637