Nathaniel Switzner

Assistant Professor
Department of Engineering
  • Ph.D. Colorado School of Mines
    M.S. Colorado School of Mines
    B.S. University of Missouri-Rolla
  • Email: [email protected]
  • Office: B-F2-18

Profile

Dr. Nathaniel teaches mechanics of materials, materials science, manufacturing, measurements laboratory, and senior design at AUIS. He researches steel pressure vessel and pipe metallurgy including processing, composition, microstructure, properties, and failure analysis. Dr. Nathaniel is a licensed professional engineer (P.E.) in the State of California and has worked for RSI-Pipeline Solutions, Exponent, Valero, ExxonMobil, and Honeywell. He was granted his M.S. and Ph.D. from the Colorado School of Mines, where he studied stainless steel forging and cladding processes. He obtained his B.S. from the University of Missouri-Rolla (now Missouri University of Science and Technology).

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Publications

  • Switzner, N., Anderson, J., Rosenfeld, Veloo, P., Gibbs, J., Gonzalez, R., “Assessing steel pipe toughness using chemical composition and microstructure,” Pipeline Pigging and Integrity Management (PPIM), Paper #57, Houston, TX, February 22-26, 2021. https://www.researchgate.net/publication/350040295_Assessing_steel_pipe_...
  • Cohn, A., Kornuta, J., Switzner, N., Gibbs, J., Gonzalez, R., Veloo, P., “Current approaches and remaining challenges in using ultrasonic contact impedance technology to characterize pipe hardness and predict tensile strength,” Pipeline Pigging and Integrity Management (PPIM), Paper #55, Houston, TX, February 22-26, 2021.
  • Gould, M., Amend. B., Veloo, P., Oneal, O., Gonzales, R., Switzner, N., “The role of in-situ metallography in pipeline integrity management,” Pipeline Pigging and Integrity Management (PPIM), Paper #51, Houston, TX, February 22-26, 2021.
  • Gibbs, J., Switzner, N., Kornuta, J., Gonzalez, R., Rosenfeld, M., Veloo, P., “Comparison of in-situ material verification non-destructive testing to laboratory destructive testing of lap-welded pipe,” Pipeline Pigging and Integrity Management (PPIM), Paper #56, Houston, TX, February 22-26, 2021.
  • Switzner, N., Veloo, P., Rosenfeld, M., Rovella, T., Gibbs, J., “An approach to establishing manufacturing process and vintage of line pipe using in-situ nondestructive examination and historical manufacturing data,” International Pipeline Conference (IPC 2020), Calgary, Canada, September 28-October 2, 2020. Proceedings from: American Society of Mechanical Engineers (ASME). https://www.researchgate.net/publication/342804790_An_approach_to_establ...
  • Switzner, N., Liong, M., Veloo, P., Gould, M., Rovella, T., “Influence of line pipe steel microstructure on NDE yield strength predictive capabilities,” Pipeline Pigging and Integrity Management (PPIM), Paper #66, Houston, TX, February 19-21, 2020. https://www.researchgate.net/publication/339483958_Influence_of_line_pip...
  • Switzner, N., Liong, M., Veloo, P., Gould, M., Rovella, T., “Nondestructive Testing of Pipeline Materials: Further Evaluation of Portable OES, XRF, LIBS, and Filings to Estimate Chemical Composition,” Pipeline Pigging and Integrity Management (PPIM), Paper #67, Houston, TX, February 19-21, 2020. https://www.researchgate.net/publication/339483862_Nondestructive_Testing_of_Pip...
  • Switzner, N., N Switzner, P Veloo, B Amend, M Gould, M Rosenfeld, J Ma, T Rovella, “A Methodology to Determine the Grade for a Vintage Gas Transmission Pipe,” AISTech, Pittsburgh, PA, May 7, 2019. https://www.researchgate.net/publication/333563154_A_Methodology_to_Dete...
  • Louie, M., Switzner, N., Veloo, P., Amend, B., Liong, M., Gould, M., Rovella, T., Martin, P., “Nondestructive Testing of Pipeline Materials: Analysis of Chemical Composition from Metal Filings” Pipeline Pigging and Integrity Management (PPIM), Paper #50, Houston, TX, February 20-22, 2019. https://www.researchgate.net/publication/331318282_Nondestructive_Testin...
  • Switzner, N., Yu, Z., “Austenitic Stainless Steel Cladding Interface Microstructures Evaluated for Petrochemical Applications,” Welding Journal, Vol. 98 (2), 2019, pp S50-S61. https://s3.amazonaws.com/WJ-www.aws.org/supplement/2019.98.004.pdf
  • Switzner, N.T., Sawyer, E.T., Everhart, W.A., Hanlin, R.L., “Predicting microstructure and strength for AISI 304L stainless steel forgings,” Materials Science and Engineering: A, Vol. 745, 2019, pp 474-483. https://doi.org/10.1016/j.msea.2018.12.054
  • Switzner, N., Yu, Z., Eff, M., Lienert, T., Fonseca, A., “Microstructure and mechanical property variations within inertia friction welded joints of stainless steel to steel.” The International Journal of Advanced Manufacturing Technology, Vol. 95 (9-12), 2018, pp 4327-4340. https://doi.org/10.1007/s00170-017-1568-3
  • Switzner, N., Queiroz, H., Duerst, J., Yu, Z., “Si-bronze to 304 stainless steel GTA weld fusion zone microstructure and mechanical properties,” Materials Science and Engineering: A, Vol. 709, 2018, pp 55-64. https://doi.org/10.1016/j.msea.2017.09.025
  • Morgan, M.J., Switzner, N.T., San Marchi, C.W., Balch, D.K., “Forging strain rate and deformation temperature effects on the fracture toughness properties of type 304L stainless steel precharged with tritium.” Report SAND2017-5637C. Sandia National Lab. (SNL-NM), Albuquerque, NM, 2017. (available at osti.gov) https://doi.org/10.1115/1.861387_ch18
  • Switzner, N., Friction welding for cladding applications: processing, microstructure and mechanical properties of inertia friction welds of stainless steel to low carbon steel and evaluation of wrought and welded austenitic stainless steels for cladding applications in acid-chloride service. (PhD Dissertation) George S. Ansel Department of Metallurgical and Materials Engineering, Colorado School of Mines. 2017. https://www.researchgate.net/publication/317635399_Friction_welding_for_...
  • Reynolds, T.B., Everhart, W.A., Switzner, N.T., Balch, D.K., San Marchi, C.W., “High-energy rate forgings of wedges: characterization of processing conditions.” Report SAND2014-4272. Sandia National Lab. (SNL-CA), Livermore, CA, 2014. (available at osti.gov) https://prod-ng.sandia.gov/techlib-noauth/access-control.cgi/2014/144272...
  • Everhart, W.A., Lee, J.D., Broecker, D.J., Bartow, J.P., McQueen, J.M., Switzner, N.T., Neidt, T.M., Sisneros, T.A., Brown, D.W., “Residual Stresses in 21-6-9 Steel Warm Forgings.” Report KCP-613-9282. Kansas City Plant (KCP), Kansas City, MO, 2012. (available at osti.gov)
  • Switzner, N., Neidt, T., Hollenbeck, J., Kuntson, J., Everhart, W., Hanlin, R., Balch, R., San Marchi, C., “Hydrogen-Assisted Fracture in Forged Type 304L Austenitic Stainless Steel,” International Hydrogen Conference 2012. Proceedings published by ASME Press in 2014. https://doi.org/10.1115/1.860298_ch29
  • Switzner, N.T., “Stainless steel microstructure and mechanical properties evaluation for spinformed plates.” Report KCP-613-8779. Kansas City Plant (KCP), Kansas City, MO, 2010. (available at osti.gov)
  • Switzner, N.T., Van Tyne, C.J., Mataya, M.C., “Effect of forging strain rate and deformation temperature on the mechanical properties of warm-worked 304L stainless steel,” Journal of Materials Processing Technology, Vol. 210, No. 8, 2010, pp 998-1007. https://doi.org/10.1016/j.jmatprotec.2010.01.014
  • Switzner, N.T., “Spin-forming Project Report.” Report KCP-613-8550. Kansas City Plant (KCP), Kansas City, MO, 2009. (available at osti.gov)
  • Switzner, N.T., Comparison of Forging Processes for 304L Stainless Steel. (Masters Thesis). George S. Ansel Department of Metallurgical and Materials Engineering, Colorado School of Mines.2007. https://www.researchgate.net/publication/34177989_Comparison_of_forging_...
  • Switzner, N.T., Van Tyne, C.J., Mataya, M.C., “Hydraulic Press, Mechanical Press, Screw Press, or HERF: A Comparison of 304L Forging Processes,” Proceedings of the 27th Forging Industry Technical Conference and Energy Summit, March 27-29, 2007, Fort Worth, Texas.