Summary
The acoustic emissions (AEs) under partially compression were monitored with two softwood and one hardwood specimens in very eary stages of decay by a brown- and a white-rot fungus. Even slightly decayed specimens emitted AEs immediately after beginning of loading, typically when partial compression stress was applied to brown-rotted wood with the flat-headed attachment. With sound specimens of three wood species, only a few AEs were generated until the load reached at the proportional limit. These results suggest that AE monitoring will be one of the feasible means to detect the incipient stages of decay in a field test.
Similar content being viewed by others
References
Wilcox, W. W. 1978: Review of literature on the effects of early stages of decay on wood strength. Wood and Fiber 9: 252–257
Noguchi, M.; Nishimoto, K.; Imamura, Y.; Fujii, Y.; Okumura, S.; Miyauchi, T. 1986: Detection of very early stages of decay in western hemlock wood using acoustic emission. For. Prod. J. 36 (4): 35–36
Noguchi, M.; Fujii, Y.; Imamura, Y. 1986: Use of acoustic emission in the detection of incipient stages of decay in western hemlock wood. Acoustic Lett. 9: 79–81
Beall, F. C.; Wilcox, W. W. 1987: Relationship of acoustic emission during radial compression to mass loss from decay. For. Prod. J. 37 (4): 38–42
Author information
Authors and Affiliations
Additional information
The authors thank the Weyerhaeuser Research Grants Program for its aid in this investigation
Rights and permissions
About this article
Cite this article
Noguchi, M., Ishii, R., Fujii, Y. et al. Acoustic emission monitoring during partial compression to detect early stages of decay. Wood Sci.Technol. 26, 279–287 (1992). https://doi.org/10.1007/BF00200163
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00200163