3Kumar A M,HAKEEM S A. Optimum Design of Symmetric CompQsite Patch Repair to Centre Cracked Metallic Sheet [J]. Composition Structures, 2000,49(3):285-292.
10SERAFINI T T, DELVIGS P, LIGHTSEY G. Thermally Stable Polyimides from Solutions of Monomeric Reactants[J]. Journal of Applied Polymer Science, 1972,16(4):905-915.
9Stephens D R and Kilinski T J :Field validation of composite repair of gas transmission pipelines, Final Report to the Gas Research Institute, Chicago, Illinois, GRI 98/0032, April 1998.
10Chris Alexander, Bob Francini: State of the aet assessment of eompoaite systems uset to repair transmissione, Proceeding of Icp 2006,6th International Pipeline Conference, September 25-29, Calgary, Alberta, Canada.