Finite Element Investigation into New Magnetic Flux Leakage Inspection Tools
Business: Silverwing (UK) Ltd.
Expertise: Computational Modelling Engineering Duration: 2 Years
Technology: Finite Element Analysis, Magnetic Flux Leakage, NDT
Silverwing is the leading specialist Non-Destructive Testing inspection equipment provider for storage tanks, vessels and pipe work within the oil, gas and petro-chemical industries. In 1991 / 92 the Company's policy of maintaining a technical lead over its competitors led to investment in the development of Magnetic Flux Leakage (MFL) equipment to detect underfloor corrosion in bulk liquid storage tanks. Initially, the intention was to provide an added inspection service to the company’s portfolio for our petrochemical clients and in 1992 Silverwing became only the third company in the world to have a working MFL floor scanner.
News of the success of the MFL equipment quickly spread around the industry and following enquiries from the USA and Saudi Arabia it was decided to add equipment manufacture and sale to the company’s activities. In direct response to customer request development of computerised storage, evaluation and mapping of MFL results were undertaken resulting in the development of the Floormap MFL system which is now the World’s leading MFL mapping floor scanner. More recently, the company has sought to further develop the MFL technology to provide improved and enhanced inspection capabilities to the Floormap system, incorporating both near and far surface defect discrimination.
The ASTUTE project has involved undertaking FEA electromagnetic simulations to optimize permanent magnetic geometries and provide simulated signals for magnetic field/defect interactions for evaluation and analysis.
Silverwing’s Floormap3D with STARS technology is the highest performance Magnetic Flux Leakage (MFL) storage tank inspection system on the market today. Building on over 20 years experience and the best-selling FloormapVS2i, Silverwing has developed top and bottom defect discrimination using surface topology air-gap reluctance sensors (STARS), enabling tank engineers to determine the optimum repair strategy and improve remaining life assessment (RLA) & risk based inspection (RBI) maintenance programs.
“The ASTUTE programme has helped Silverwing maintain leadership in inspection of storage tank floors. Through this collaboration, magnetic FEA simulations have provided valuable guidance to the product development team. The knowledge gained through this work has been used to develop techniques to improve the presentation of data on Silverwing’s flagship tank floor scanner. This is also likely to guide new product development that involves inspection using magnetics and classification of corrosion”
- Neil Pearson, Development Manager