Improvements In The Fracture Cleavage Testing Of Adhesively-Bonded Wood

摘要: Previous researchers have used the contoured dual cantilever beam, DCB, to demonstrate value of fracture testing for bonded wood. However, use specimen is laborious and stringent, preventing routine application this powerful test. A simplified method mode I adhesively-bonded wood presented here. Two significant improvements are shown: 1) data analysis using a shear corrected compliance derived from beam theory, 2) flat DCB geometry. The both simple robust, accounting variations in modulus that often confound traditional tests. geometry greatly simplifies sample preparation, eliminating difficulties associated with calibration, selection required composite DCB. Real-time crack length measurements digital hardware. sensitivity simplification hopes promoting wider adoption