Research progress of non-destructive evaluation used in wood structure

Non-destructive evaluation (NDE) is an effective and reasonable technology for utilization in wooden material. Facing the defects of wooden material, the effective NDE appears practically significant for protecting wood structures. Major NDE techniques and equipments applied in wood structures detection were systematically summarized. Then State of main researches on NDE used in wooden material was reviewed, including the imaging technique, the signal technique and the probe technique. The shortcomings of NDE used in wood structures were pointed out briefly. Quantitative analysis on the relationship between mechanical strength of wood and results of non-destructive testing were found to be insufficient. At last, the development tendency of NDE is forecasted.