Patrick Miller

Patrick K. Miller

Vice President, Associate Principal Engineer, M.S.


Before joining Olson Engineering (OE) in 1990, Mr. Sack had been with Northrop Aerospace as a Wind Tunnel Instrumentation Engineer. He earned his Bachelor of Science in Electrical Engineering at Cal State University, Northridge, California Magna Cum Laude and completed all of the course work of the Masters in Electrical Engineering program (Digital Signal Processing) at Cal State Northridge. Mr. Sack has a broad range of experience in NDT and evaluation of structural elements of various materials. He has extensive consulting experience in over 3800 nondestructive evaluation, vibration and geophysical investigations. In addition to his consulting service ability, Mr. Sack has been responsible for the design and development of instrumentation, both hardware and software, for over 20 years for Olson Instruments (OI). He has designed and built the electronics for the Olson Instruments Freedom Data PC, Concrete Thickness Gauge, and NDE360, as well as associated transducers, pulser units and software for ultrasonic, sonic, seismic, vibration and physical testing measurements. Mr. Sack holds a patent in Scanning Apparatus and Method for Non-Destructive Materials Evaluation and Mapping Through Use of Acoustic Waves. Mr. Sack’s responsibilities as Senior Vice President are varied. He supports the OE Consulting Group as well as the OI Design Group in the Colorado Office. Mr. Sack has prepared and presented a number of papers on a variety of aspects related to NDT of infrastructure, and is currently an instructor for the ASCE seminar on Structured Condition Assessment of Existing Structures.

P.E.s
  • Colorado
  • “Nondestructive Evaluation of Grout Defects in Internal Tendons of Post-Tensioned Girders,” Tevfik Terzioglu, Madhu M. Karthik, Stefan Hurlebaus, Mary Beth D. Hueste, Virginia Foster, Stefan Maack, Jens Wostmann, Herbert Wiggenhauser, Martin Krause, Patrick K. Miller and Larry D. Olson, NDT&E International 99, May 2018. 
  • “Spectral Analysis of Surface Waves Scanning to Identify Debonding Conditions between HMA Layers in Pavements,” co-authored with Y Tinkey, P Miller and M Heitzman, Transportation Research Board 2011 Annual Meeting Proceedings, January, 2013.
  • “Bridge Deck Scanning for Condition Assessment of Bare Concrete and Asphalt Overlaid Decks”, Tinkey, Y., Miller, P., Leonard, M., Pott, A. and Olson, L., Transportation Research Board 2013 Annual CD Proceedings, January, 2013. 
  • “Remote Rock-Fall Monitoring With An Interferometric Radar System”, Patrick K. Miller, P.E., Arian Weaver, Colin Leek, Larry D. Olson, P.E., SAGEEP 2012 Conference, March 2012.                                                                
  • “Vehicle-Mounted Bridge Deck Scanner”, Y Tinkey, P Miller, L Olson and J Tanner, Transportation Research Board 2011 Annual Meeting Proceedings, January, 2011.
  • “Multiple Impact Surface Waves (MISW) – Improved Accuracy for Pavement System Thicknesses and Moduli vs. Spectral Analysis of Surface Waves (SASW)”, L.D. Olson, P.E. and P.K. Miller, GeoFlorida Conference, 2010.
  • “Non-Destructive Evaluation Scanning Techniques for Structural Components of Concrete Bridges”, Yajai Tinkey, Ph.D., Larry Olson, P.E., Pat Miller, National Bridge Conference, 2008.
  • “Measurement of Soil Stress and Strain using In-ground Instrumentation.” Miller, P.K., Rinehart, R.V., and Mooney, M.A., Proc. ASCE Geoinstitute GeoDenver Conference, Denver, CO, Feb 20-22, 2007, in press.
  • “A Comparison of Shear Wave Velocities Obtained from the Crosshole Seismic, Spectral Analysis of Surface Waves and Multiple Impacts of Surface Waves Methods.” Miller, P.K. , Ryden, N., Tinkey, Y., Olson, L.D., SAGEEP, 2008.
  • “Analysis of Light Falling Weight Deflectometer Test based on In-situ Stress and Strain Response.” Mooney, M.A. and Miller, P.K., (2009). Journal of Geotechnical and Geoenvironmental Engineering, 135(2), 199-208.