Fracture behavior of carbon steel pipe with local wall thinning subjected to bending load

摘要: To evaluate the structural integrity of power plant piping, monotonic bending tests are conducted on 4- and 3.5-in. diameter full-scale carbon steel pipe specimens with local wall thinning. The thinning is simulated as erosion/corrosion metal loss. eroded area subjected to tensile or compressive stress by applied moment. deformations fracture behaviors at maximum moments found be classified into three types. When stress, ovalization crack initiation/growth occurs an buckling occurs. occurrence ovalization, initiation/growth, depends initial size From relationships among growth buckling, allowable sizes for proposed.