Experimental Investigation of Defects Inspection for FRP Pipeline based on Single-Side NMR
- 1. Technology Inspection Center, Shengli Oil Field, Dongying, China
- 2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing, China
The fiber reinforced plastic (FRP) pipelines have been used widely in oil-gas gathering and transfortation. The defects of FRP pipeline would increase with the extension of service time. However, it is very difficult to detect the defects of FRP pipelines on-spot quickly. In this paper, a new method detecting defects for FRP pipe has been provided based on the NMR. The proton density distributions have been obtained at different depth of FRP components using single-side NMR. The experimental results show that there is a significant change of proton density distribution at the location of defects. And, these results would be useful for defects inspection of composite material component.