CORE DELAMINATION AND SHEAR TESTS FOR LAMINATED WOOD,

A delamination and a shear test method using small cores drilled from wood laminates provide for non-destructive and potentially low cost testing of glueline quality throughout the length and depth of laminated wood members. Cores 38 in. diameter obtained from the full depth of laminates by means of a special core drill are subjected to 16-24 hours of a 45 minute wetting and drying cycle in an automatic cycler to give a measure of delaminations resistance. Similar cores for determination of shear strength and wood failure employ a tool adapted to a standard cross section 12-day test method and block shear together with proposed round robin standardization. Author