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Book synopsis

This work covers the development of a six-port and slotted waveguide based measurement system for the determination of the variation of moisture content (mc) of stacked lumber. A Six-port reflectometer was developed and used throughout the trials incorporating an automatic calibration system. In addition the measurement of the dielectric properties of the typical lumber types of Heartwood, Sapwood and internal Branches is examined. Measurements were made using the waveguide cell technique covering the frequency range of 2.3 to 6.5GHz. Both an explicit first order model and multivariate regression analysis of the sensor was proposed and experimental results presented for lumber mc spanning the range of 10 to 180% by dry basis. From these trials a mc measurement error of 3% for the explicit model and 2% for regression of individual boards covering the sensor was determined without incorporating density effects

Book details

Book category Books in English Technology, engineering, agriculture Electronics & communications engineering Electronics engineering

• Full title: Microwave Timber Moisture Measurement
• Subtitle: Microwave In-Kiln Sensor
• Author: Wayne Holmes
• Language: English
• Binding: Paperback
• Number of pages: 128
• EAN: 9783639704990
• ISBN: 3639704991
• ID: 07173824
• Publisher: Scholars' Press
• Weight: 200 g
• Dimensions: 229 × 152 × 8 mm
• Date of publishing: 30. June 2014

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