Mechanical response and fracture failure test of wide plate with defective pipe under tensile loading
In order to investigate the influence of the relative distance and angle between defects and welds on the failure of X65 spiral submerged arc welded steel pipe,wide-plate tensile tests are carried out,and the influence of the distance from defects to welds and the angle between defects and welds on the mechanical response and fracture failure behavior of the wide-plate pipeline are analyzed by using the three-dimensional digital image correlation method in axial tensile loading.The results show that the existence of weld and defects as well as the relative distance and angle from the defects to the weld have an effect on the strain change and fracture failure behavior of the pipe wide plate,and different relative distances and angles have different degrees of influence on its tensile strength,strain distribution and fracture failure behavior,and the tensile strength of the pipe wide plate is the lowest,the crack is the lowest and the fracture failure behavior is the lowest when the angle between the defects and the weld is 30° and the distance between the defects and the weld is 39 mm.The lowest tensile strength,crack sprouting and fracture failure requires the smallest displacement load,at this time its bearing capacity is the worst,the most likely to fracture failure.
oil and gas pipeline safetywide plates with defectswide plate tensile testdigital image correlation methodmechanical responsefracture failure
万方数据
维普
