NDLI: Improvement of robustness in ultrasonic attenuation spectroscopy for detecting internal insect damage in wood member of cultural heritage

Content Provider	Springer Nature Link
Author	Oh, Jung Kwon Kim, Chul Ki Hong, Jung Pyo Lee, Jun Jae
Copyright Year	2014
Abstract	Insect damage is one of the most serious problems in conservation of wooden cultural heritage buildings. Because this damage is quite small in a cross section, it is difficult to detect by conventional ultrasonic techniques. In the previous study, ultrasonic attenuation spectroscopy showed a feasibility to detect this small defect. But to apply this method to real inspection, the robustness needs to be improved. For improving the robustness, this study focused on inconsistency of ultrasonic spectrum measurement. To minimize the inconsistency, Spectra-averaging pretreatment was attempted. Even though this pretreatment would provide the better robustness, it can also make a negative effect on the accuracy in the detection of small damage. Therefore, the influence of the pretreatment on the prediction was investigated in this study. By ultrasonic attenuation spectroscopy, the number of drill hole was predicted. When comparing the accuracy in prediction using the pretreated spectra from the prediction without the pretreatment, the accuracy was not lower than that without the pretreatment or the previous study. Therefore, it was concluded that the Spectra-averaging pretreatment does not make a negative effect on the prediction.
Starting Page	136
Ending Page	142
Page Count	7
File Format	PDF
ISSN	14350211
Journal	Journal of Wood Science
Volume Number	61
Issue Number	2
e-ISSN	16114663
Language	English
Publisher	Springer Japan
Publisher Date	2015-01-04
Publisher Place	Tokyo
Access Restriction	Subscribed
Subject Keyword	Ultrasonic attenuation spectroscopy Termite damage Cultural heritage Wooden building Non-destructive Wood Science & Technology Materials Science Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Biomaterials Forestry

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