Electromagnetic Pigging System Based on Sandwich Differential Planar Coil

In-pipeline inspection is an important precontrol method to ensure the safety of oil and gas pipeline transportation. This article proposes an electromagnetic in-pipe detector based on passive resonance-enhanced differential planar coils to detect defects on the inner surface of pipes. Both qualitative and quantitative analyses of pipeline defects and damage are developed. The introduction of passive resonant coils is shown to significantly improve the detection capability of the sensor. This is coupled with the establishment of a theoretical derivation model of the proposed structure. The hardware platform of the laboratory system has been built, and an eddy current internal detector suitable for 8-in-diameter pipes is developed and integrated into the system. Numerical simulations and experimental verifications on flat defects and pipe defects have been undertaken. The obtained results have shown that the real defects have been correctly detected, and the system is effective, reliable, and efficient

1994 OURE report, including the 4th Annual UMR Undergraduate Research Symposium -- Entire Proceedings

The Opportunities for Undergraduate Research Experience program began in 1990. This volume constitutes the proceedings of the fourth annual OURE program. The goals of the program are: (1) to expand opportunities for a more active form of learning by students; (2) to encourage the direct interaction of undergraduate students with faculty through research; (3) to expand the level of research activity on the campus; (4) to help encourage superior students to pursue graduate study; and (5) to reinforce the idea that teaching and research are compatible and mutually reinforcing at a research university. The OURE program continues to achieve its goals -- UMR students have performed research on a wide variety of topics, have worked closely with faculty and have experienced first-hand both the excitement and the frustration of performing research. This volume contains papers presented at the fourth annual UMR Undergraduate Research Symposium held on March 23, 1994, and final reports of students participating in the 1993-94 OURE program. Students in the OURE program are encouraged to participate in the Symposium and participation increased substantially this year. Through programs such as this, the University of Missouri--Rolla, Missouri’s Technological University, continues to provide opportunities for its undergraduate students to further their research experiences in preparation for their future endeavors