A study for the practical application of a new decay detection method using an electronic nose

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K06176
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 40020:Wood science-related
• Research Institution: Hokkaido Research Organization
• Principal Investigator: Masaki Suzuki 地方独立行政法人北海道立総合研究機構, 森林研究本部 林産試験場, 主査 (00446311)
• Co-Investigator(Kenkyū-buntansha): 宮内 輝久 地方独立行政法人北海道立総合研究機構, 森林研究本部 林産試験場, 主査 (20446339)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 木材腐朽菌 / ガスセンサ / 腐朽診断 / Electronic Nose / Machine Olfaction / 匂い識別

Outline of Final Research Achievements

In this study, we investigated an odor recognition method to test a new decay detection method for wooden buildings. In addition to semiconductor gas sensors, a quartz crystal microbalance sensor method was introduced. A combination of materials used for the sensitive film formed on quartz crystal sensor surfaces was obtained. Measurements were made on the specimens at the initial stage of decay and after one year. No changes in odor were detected during the experimental period, and it was concluded that it was difficult to determine the decay stage using this method. Discrimination between wood-decay fungi and molds was also studied.

Free Research Field

木質科学

Academic Significance and Societal Importance of the Research Achievements

ガスセンサアレイを用いた腐朽検出手法について，学術論文1報での公表を行った。本手法による腐朽段階の判別については，困難であることが明らかになった。一方で，本研究で用いた半導体式ガスセンサの経時変化が腐朽の有無の判別には影響しないことを明らかにした。また木材腐朽菌とカビに識別についても一定の成果を得た。本研究の成果は，木造建築物の壁体内や床下など直接観察しづらい場所での木材腐朽菌の検出において強力な手段を提供する。