John Bowler

Title(s):

Professor Emeritus

Office

2215 Coover
2520 Osborn Dr.
Ames, IA 500111046

Office

179 ASC II # Ames, IA 50011-3042 # Phone: 515-294-2093

Information

Bio

John Bowler has been at Iowa State University since the fall of 1999.  He has a joint appointment as Senior Scientist with the Center for Nondestructive Evaluation and Professor in Electrical and Computer Engineering. Prior to working at ISU, he was at the University of Surrey, England. Dr. Bowler received his M. Sc. in Science Education from the University of Keele, England in 1980 and his PhD from The University of Surrey in 1984. Currently his main research interests are in electromagnetic methods of NDE and the properties of electrically conducting composite materials. In addition, he has published articles on positron annihilation, the dynamics of rare gas mixtures, the suppression of distortion in loudspeakers, the design of magnets for magnetic resonance imaging. The work on electromagnetic NDE focuses on new and improved inspection methods for the detection of cracks and corrosion in aircraft and nuclear power plant. He has developed theoretical and computational models to support developments in eddy-current inspection hardware.

Education

B.Sc., Physics, University of Leicester, U.K. (1971)

M.Sc., Science Education, University of Keele, U.K. (1980)

Ph.D., Physics, The University of Surrey U.K (1984)

Research Areas

Core Area(s): Gas dynamics and kinetic theory, electromagnetic measurement of material properties, theory of eddy current testing

Department’s Strategic Area(s): Theory of material property measurement and crack detections

Additional Information

Publications

Google Scholar Profile:  https://scholar.google.com/citations?user=SnNlkTUAAAAJ&hl=en

  • Tao Wu John R Bowler Theodoros P Theodoulidis, Eddy-Current Induction by a Coil Whose Axis is Perpendicular to that of a Tube IEEE transactions on magnetics, 2017, Vol. 53(7), p.1-9
  • Øyvind Persvik and John R. Bowler, “Evaluation of four-point transient potential drop on conductive plates,” 22 February 2017, Applied Physics Letters, Vol.110, Issue 8, 2017.
  • T.P. Theodoulidis and John R. Bowler, “Impedance of a Coil at an Arbitrary position and Orientation inside a Conductive Borehole or Tube”, IEEE Trans. Mag. Vol. 51, No. 4, 1 – 6 April 2015 6200806.
  • C.P. Trample# and John R Bowler, “Eddy Current Coil Interaction with a Perfectly Conducting Wedge of Arbitrary Angle,” Research in Nondestructive Evaluation. 25 3 186-202 (2014).
  • Chen#, J.R. Bowler and N. Bowler, “Analytical solution for capacitance calculation of a curved patch capacitor that conforms to the curvature of a homogeneous cylindrical dielectric rod,” APL 104 032901 (2014).
  • Lu# and J.R. Bowler, “An analytical model of a ferrite-cored inductor used as an eddy current probe,” J. Appl. Phys. 111 (103907) 2012.
  • J.R. Bowler, T. Theodoulidis, and N. Polakis, “Eddy current probe signals due to a crack at a right-angled corner,” IEEE Trans. Mag. 48 12 4735-4746 (2012)
  • J.R. Bowler, T. Theodoulidis, H. Xie, and Y. Ji#, “Evaluation of Eddy Current Probe Signals due to Cracks in Fastener Holes,” IEEE Trans. Mag. 48 (3) 1159-1170 (Mar. 2012).
  • Chen, N. Bowler, and J.R. Bowler, “Analysis of Arc-Electrode Capacitive Sensors for Characterization of Dielectric Cylindrical Rods,” IEEE Trans. Inst. Meas. 61 (1) 233-240 (Jan 2012).
  • J.R. Bowler, “Evaluation of the transient potential drop of a four-point probe,” Appl. Phys. Letts. 98, 26 No. 264105 (Jun 2011).

Departments

Affiliations

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