Study the effects of ferrous materials inside wood on the propagation characteristics of acoustic emission signals

Xu, Ning; Li, Ming; Fang, Saiyin; Huang, Changlin; Zhao, Yue; Mao, Feilong; Qin, Gezhou; Deng, Tingting; Wang, Yuan

doi:10.1080/17480272.2023.2171808

Cited by 4 publications

(1 citation statement)

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“…The AE signal is more susceptible to variations in the AE signal during long-distance propagation as the AE signal is normally attenuated by the material itself. 42 , 43 However, because wood belongs to anisotropic material, the kinetic energy change rules of the 3 sensors far away were inconsistent. To clearly explain this change, as shown in Figure 5 , slice dyeing was performed on the used Zelkova schneideriana specimen, and the internal structure of wood was observed by electron microscope.…”

Section: Resultsmentioning

confidence: 99%

Study on the effect of different angles on the propagation characteristics of acoustic emission signals in wood

Huang

Fang

et al. 2023

Science Progress

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To explore the propagation characteristics of acoustic emission (AE) signals in wood at different angles. The AE signals at different angles were obtained by changing the angle of incidence by sawing the inclined surfaces at different angles. The Zelkova schneideriana specimen was sawn 5 times with an increment of 15°, and 5 different incidence angles were obtained. AE signals were collected by 5 sensors arranged equally on the surface of the specimen, AE energy and energy attenuation rate were calculated. The reflection signals corresponding to different angles were collected on the uncut specimen by changing the position of the sensors, and the propagation speed of the AE signals at different angles was calculated. The results showed that the kinetic energy provided by the external excitation is small, and the AE energy is mainly provided by the displacement potential energy. With the change of the incidence angle, the AE kinetic energy changes significantly. With the increase of the reflection angle, the speed of the reflected wave also continued to increase, and finally stabilized at 4600 m/s.

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Section: Resultsmentioning

confidence: 99%