Research on Vibration Fatigue Damage Locations of Offshore Oil and Gas Pipelines Based on the GA-Improved BP Neural Network

Table 1

Test models of different crack locations.

Number	Crack location
1	Intact
2	Large pipe elbow, located 1020 mm
3	Pipe connection with a mass block, located 2240 mm
4	Vertical bent pipe connection, located 5240 mm