Study on the time-frequency characteristics and propagation law of acoustic emission longitudinal waves in wood grain direction Authors SAIYIN FANG SOUTHWEST FORESTRY UNIVERSITY, YUNNAN, CHINA MING LI ANHUI POLYTECHNIC UNIVERSITY, ANHUI, CHINA TINGTING DENG SOUTHWEST FORESTRY UNIVERSITY, YUNNAN, CHINA Kun Du Southwest Forestry University, China Post Views: 262
