The interaction of small, dried samples of pine, redwood and yellow-poplar with toluene, water and formic acid was measured using acoustic emission (AE) sensors. The purpose of these experiments was to determine if the level of acoustic emissions could be correlated with the amount of swelling. The results indicate that acoustic emissions are well correlated with swelling. The level of AE was low when using a non-swelling solvent, toluene, and high with water and the super-swelling solvent, formic acid. Also, it is evident that both a species effect and a solvent effect exists when the solvent/wood interaction is measured using AE.
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This research was performed while the primary author was an employee of the Mississippi Forest Products Laboratory
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Rice, R.W., Kabir, F.R.A. The acoustic response of three species of wood while immersed in three different liquids. Wood Sci.Technol. 26, 131–137 (1992). https://doi.org/10.1007/BF00194468
- Formic Acid
- Acoustic Emission
- Material Processing
- Solvent Effect