The Effect of Lack of Penetration Defects on Static Tensile Behavior of High-Strength Structural Steel Weldments.
ILLINOIS UNIV URBANA DEPT OF CIVIL ENGINEERING
Pagination or Media Count:
This paper investigates the effect of lack of penetration LOP in welded T-1 steel plates on tensile properties. Tensile tests of welded plates having varying sizes of LOP were conducted and monitored for acoustic emissions. Fracture surfaces were examined. Using a documented computer program the J integral of fracture mechanics was evaluated at several points for each specimen. An anticipated decrease in tensile strength and ductility with increasing LOP was observed. By using base metal yield and tensile strength, a net section criterion and a limit load stress, four modes of fracture behavior can be identified. These results express quantitative relationships between LOP defect size and tensile properties. The range of allowable LOP defect sizes for which tensile strength may not be seriously affected is thus established.
- Couplers, Fasteners and Joints
- Structural Engineering and Building Technology