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Signal Characteristics of Acoustic Emission from Angiosperm and Gymnosperm by the Water Stress  

Nam, Ki-Woo (Department of Materials Science and Engineering, Pukyong National University)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.23, no.5, 2003 , pp. 480-487 More about this Journal
Abstract
To improve environmental control in various plants, signal characteristics of plants have been studied by a nondestructive technique. In this paper, the acoustic emission (AE) from plants was analyzed for water stress dependency. AE signals were taken from gymnosperm and angiosperm. AE sensor detected AE signals from the plant stem underneath the plant surface below the sensor. AE hit-event counts in daytime were more than those in night time, and it was found that the daily hit counts pattern was strongly affected by the water stress in the plant. frequency bands of AE signals from the angiosperm was different from those from the gymnosperm. Frequency bands of AE in outdoor condition were in accord with those in indoor having similar conditions.
Keywords
water stress; angiosperm; gymnosperm; acoustic emission; signal characteristics;
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Times Cited By KSCI : 1  (Citation Analysis)
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