Research and Application of Log Defect Detection and Visualization System Based on Dry Coupling Ultrasonic Method  

作　　者：Yongning Yuan Dong Zhang Usama Sayed Hao Zhu Jun Wang Xiaojun Yang Zheng Wang 

机构地区：[1]College of Mechanical and Electronic Engineering,Nanjing Forestry University,Nanjing,210037,China [2]College of Materials Science and Engineering,Nanjing Forestry University,Nanjing,210037,China [3]College of Civil Engineering,Nanjing Forestry University,Nanjing,210037,China [4]College of Information Science and Technology,Nanjing Forestry University,Nanjing,210037,China

出　　处：《Journal of Renewable Materials》2023年第11期3917-3932,共16页可再生材料杂志(英文)

摘　　要：In order to optimize the wood internal quality detection and evaluation system and improve the comprehensive utilization rate of wood,this paper invented a set of log internal defect detection and visualization system by using the ultrasonic dry coupling agent method.The detection and visualization analysis of internal log defects were realized through log specimen test.The main conclusions show that the accuracy,reliability and practicability of the system for detecting the internal defects of log specimens have been effectively verified.The system can make the edge of the detected image smooth by interpolation algorithm,and the edge detection algorithm can be used to detect and reflect the location of internal defects of logs accurately.The content mentioned above has good application value for meeting the requirement of increasing demand for wood resources and improving the automation level of wood nondestructive testing instruments.

关 键 词：Ultrasonic method log defect detection visualization system dry coupling B-scan pulse transmission method bilinear image interpolation algorithm edge detection algorithm 

分 类 号：TB3[一般工业技术—材料科学与工程]