Searched for: author:"Bloom, J.G.P."
(1 - 14 of 14)
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Bloom, J.G.P. (author), Chougrani, K. (author), Rundberg, H. (author), Oldenziel, G. (author), Deleye, X. (author), Martina, Q. (author)
The feasibility of the inspection of flow line hubs using the phased array technique was investigated to determine the surface area of the seal area degraded by corrosion. A clean model of the hub was simulated to gain insight into the geometrical echoes and to determine the area covered by the ultrasonic beams. A finite difference scheme was...
article 2011
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Kimball, E. (author), Urbanus, J. (author), Bloom, J.G.P. (author)
This report presents the results of the AERTOs project, an ERA-NET project of seven RTOs in Europe: Fraunhofer, CEA, SINTEF, SP, TNO, Tecnalia and VTT. The objective is to identify, design and implement “joint, long-term, sustainable cooperation activities between RTOs”. The purpose of this work is a bottom-up approach to develop and deploy...
report 2011
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Volker, A.W.F. (author), Bloom, J.G.P. (author), Lorenz, M. (author), TNO Industrie en Techniek (author)
Inspection of corrosion at pipe support locations is difficult because of accessibility limitations. Recently a screening technique has been developed called Multi-Skip ultrasonics. The method utilizes a pitch-catch set-up. Shear waves are transmitted that reflect multiple times in the pipe wall, from which integral wall thickness information is...
conference paper 2010
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Volker, A.W.F. (author), Bloom, J.G.P. (author), TNO Industrie en Techniek (author)
The concept of predictive maintenance using permanent sensors that monitor the integrity of an installation is an interesting addition to the current method of periodic inspections. Guided wave tomography has been developed to map the wall thickness using the travel times of guided waves. The method has been demonstrated for straight pipes. The...
conference paper 2010
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Volker, A.W.F. (author), Bloom, J.G.P. (author)
Corrosion is one of the industries major issues regarding the integrity of assets. Currently inspections are conducted at regular intervals to ensure a sufficient integrity level of these assets. Cost reduction while maintaining a high level of reliability and safety of installations is a major challenge. The concept of predictive maintenance...
conference paper 2010
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Bloom, J.G.P. (author), Heerens, G.J. (author), Volker, A.W.F. (author), Mast, A. (author), TNO Industrie en Techniek (author)
Corrosion and erosion are two major degradation mechanisms of piping systems and pipelines that both lead to wall thickness loss. To ensure sufficient integrity levels of these assets NDE is currently conducted at time based intervals often associated with shut downs. However, both economical and social requirements are pushing the industry to...
conference paper 2009
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Bloom, J.G.P. (author), Luiten, E.A. (author), Volker, A.W.F. (author), TNO Industrie en Techniek (author)
Guided wave tomography is a promising technique for the monitoring of corrosion over large areas. Guided waves have a wave speed mat depends in certain frequency-thickness regimes on the local thickness of the waveguide they follow. Therefore, the travel time of the guided wave over a fixed distance contains information about the thickness...
conference paper 2009
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Bloom, J.G.P. (author), Stelwagen, U. (author), Mast, A. (author), Volker, A.W.F. (author), Krom, A.H.M. (author), Mohamoud, A.A. (author), van Gils, G.P. (author), TNO Industrie en Techniek (author)
Risk based inspection strategies rely on detailed knowledge of the performance of inspection techniques. It is well known that every inspection technique has limitations in terms of reliability and effectiveness. Moreover, these are influenced by many factors. E.g. it depends on operator skills, inspection procedure, defect and object geometry...
conference paper 2009
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Bloom, J.G.P. (author), Stelwagen, U. (author), Mast, A. (author), Volker, A.W.F. (author), TNO Industrie en Techniek (author)
Risk based inspection strategies rely on detailed knowledge of the performance of inspection techniques. The objective of the "POD generator" project is to develop a numerical modeling approach to assess the effectiveness of specific inspection techniques. Simulation offers flexibility and reliability at acceptable costs. Therefore numerical...
conference paper 2009
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Volker, A.W.F. (author), Mast, A. (author), Bloom, J.G.P. (author), TNO Industrie en Techniek (author)
Corrosion is one of the industries major issues regarding the integrity of assets. Currently inspections are conducted at regular intervals to ensure a sufficient integrity level of these assets. Both economical and social requirements are pushing the industry to even higher levels of availability, reliability and safety of installations. The...
conference paper 2009
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Volker, A.W.F. (author), Luiten, E.G. (author), Bloom, J.G.P. (author), TNO Industrie en Techniek (author)
The concept of predictive maintenance using permanent sensors that monitor the integrity of an installation is an interesting addition to the current method of periodic inspections. The method should be capable of providing quantitative wall thickness information for both straight pipes and bends. The wave propagation in bends is far more...
conference paper 2009
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Bloom, J.G.P. (author), Dijkstra, F.H. (author), Volker, A.W.F. (author), TNO Industrie en Techniek (author)
Traditionally, ultrasonic inspection methods are developed using extensive lab measurements. This approach provides limited insight in the interaction of waves with artificial and realistic defects. However, for a thorough insight in the factors that determine the reliability it is necessary to understand the wave field inside the object of...
conference paper 2008
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Volker, A.W.F. (author), Bloom, J.G.P. (author), TNO Industrie en Techniek (author), IenT (author)
The introduction of phased arrays opens-up a range of new possibilities for ultrasonic inspections. Arrays come in various shapes ranging from linear arrays for weld inspection to circular arrays emitting guided waves for permanent monitoring applications. For this kind of applications, the data is best displayed as angle versus time to locate...
conference paper 2008
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Krom, A.H.M. (author), Mast, A. (author), Volker, A.W.F. (author), Bloom, J.G.P. (author), Technisch Physische Dienst TNO - TH (author)
conference paper 2008
Searched for: author:"Bloom, J.G.P."
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