Contrastive analysis of screw withdrawal resistance between bamboo oriented strand board and conventional particleboard

Effects of screw diameter, pilot hole diameter, and material's anisotropy on the withdrawalresistance of bamboo oriented strand board (BOSB) has been evaluated and the results has beencompared with conventional particleboard (CPB).Results indicate that the effects of screwdiameter on the face withdrawal resistance in BOSB have significant differences,whereas theedge withdrawal resistance was not. In contrast, the effect of screw diameter on face and edgewithdrawal resistance in CPB has been statistically significant difference.The effect of pilot holediameter on the face and edge withdrawal resistance both in BOSB and CPB has significantdifference,the withdrawal resistance decreased as related to increasing pilot hole diameter.Furthermore, the withdrawal resistance in BOSB is anisotropic,whereas the relative superiorityis sorted by the face, edge and end in turn. In addition, the withdrawal resistance in BOSB wasmuch higher than CPB in all directions.