Faculty & Adjuncts

Steven Tipton is a recognized expert in mechanical design, with emphasis in the areas of multiaxial fatigue and plasticity design and analysis and coiled tubing mechanics. He is an active industry consultant and holder of 9 US patents. He is the director of the University of Tulsa Coiled Tubing Mechanics Research Consortium.

Fatigue and Fracture Mechanics
Plasticity
Residual Stress Analysis
Structural Integrity Analysis
Materials
Coiled Tubing Mechanics

Mechanical Engineering Design
Engineering Mechanics
Materials Science
Fatigue and Fracture Mechanics

Journal Articles

• Coupon Specimen–Based Approach for the Simulation of Crossbore Stress and Strain State. Vol. 52, The Journal of Strain Analysis for Engineering Design, 2017, p. 112-20.
• Comparison Between Nonlinear FEA and Notch Strain Analysis for Modeling Elastoplastic Stress-Strain Response in Crossbores. Vol. 118, International Journal of Mechanical Sciences, 2016, p. 45-54.
• Algorithm to Estimate Notch Root Strain in Tension Using Numerical Analysis. Vol. 77, Theoretical and Applied Fracture Mechanics, 2015, pp. 1-13.

• Kilambi, Sreelatha, and Steven M. Tipton. “Numerical evaluation of the original “Neuber’s rule” for pure out-of-plane shear loading.” The Journal of Strain Analysis for Engineering Design 48.8 (2013): 522-535.

• Kilambi, S. and Tipton, S.M., Development of an algorithm to measure defect geometry using a 3D laser scanner Published 25 June 2012, 2012 IOP Publishing Ltd., Measurement Science and Technology, Volume 23, Number 8

• Tipton, S., Schmidt, C., Sorem, J.R. “Stress Concentration Factor Solutions for Shoulder Filleted Shafts in Bending, Including the Influence of Tapering.” SAE International Journal of Materials and Manufacturing 4.1 (2011): 638–650. Print.

• Breidenthal, C., Larín, G.E., Tipton, S.M., Stanley, and R.K. “The Use of Finite-Element-Calculated Magnetic-Flux-Leakage Signals to Study the Characterization of Defects in Steel Coiled Tubing.” SPE Journal 14.1 (2009): 120–127. Print.

• Rolovic, R., Tipton, S.M., Sorem Jr., J.R. “Multiaxial Stress Concentration in Filleted Shafts.” Journal of Mechanical Design, Transactions of the ASME 123.2 (2001): 300–303. Print.

• Tipton, S.M. “Coiled-Tubing Surface Characteristics and Effects on Fatigue Behavior.” SPE Drilling and Completion 15.1 (2000): 63–66. Print.

• Badr, E.A, Sorem, J.R, Tipton, S.M, Yang, and S. “An Analytical Procedure for Estimating Residual Stresses in Blocks Containing Crossbores.” International Journal of Pressure Vessels and Piping 77.12 (2000): 737–749. Print.

• Evaluation of the Autofrettage Effect on Fatigue Lives of Steel Blocks With Crossbores Using a Statistical and a Strain-Based Method. Vol. 28, Journal of Testing and Evaluation, 2000, pp. 181-8.

• Rolovic, R., Tipton, S.M. “Multiaxial Cyclic Ratcheting in Coiled Tubing – Part I: Theoretical Modeling.” Journal of Engineering Materials and Technology, Transactions of the ASME 122.2 (2000): 157–161. Print.

• Rolovic, R., Tipton, S.M. “Multiaxial Cyclic Ratcheting in Coiled Tubing – Part II: Experimental Program and Model Evaluation.” Journal of Engineering Materials and Technology, Transactions of the ASME 122.2 (2000): 162–167. Print.

• Badr, E.A., Sorem, J.R., Tipton, S.M. “Residual Stress Estimation in Crossbores with Bauschinger Effect Inclusion Using FEM and Strain Energy Density.” Journal of Pressure Vessel Technology, Transactions of the ASME 121.4 (1999): 358–363. Print.

• Tipton, S.M. “Coiled-Tubing Deformation Mechanics: Diametral Growth and Elongation.” SPE Production and Facilities 13.3 (1998): 194–199. Print.

• Tipton, S. Coiled-Tubing Surface Characteristics and Effects on Fatigue Behavior. Vol. 49, JPT, Journal of Petroleum Technology, 1997, pp. 612-3.
• Advances in Multiaxial Fatigue Life Prediction for Components With Stress Concentrations. Vol. 19, International Journal of Fatigue, 1997, pp. 503-15.
• Updated Stress Concentration Factors for Filleted Shafts in Bending and Tension. Vol. 118, Journal of Mechanical Design, Transactions of the ASME, 1996, pp. 321-7.
• Multiaxial Stress Concentration in an Externally Pressurized Cylinder With an External Circumferential Groove. Vol. 117, Journal of Pressure Vessel Technology, Transactions of the ASME, 1995, pp. 404-9.
• Notch Stress and Strain Estimation Considering Multiaxial Constraint. SAE Technical Papers, 1993.
• Effect of Proof Loading on the Fatigue Bahavior of Open Link Chain. Vol. 114, Journal of Engineering Materials and Technology, Transactions of the ASME, 1992, pp. 27-33.
• The Effect of Proof Loading on the Fatigue Behaviour of Stud Link Chain. Vol. 14, International Journal of Fatigue, 1992, pp. 35-40.
• Tipton, S. A Review of the Development and Use of neuber’s Rule for Fatigue Analysis. SAE Technical Papers, 1991.
• Design Curves for Maximum Stresses in Blocks Containing Pressurized Bore Intersections. Vol. 113, Journal of Mechanical Design, 1991, pp. 427-31.

Conference Proceedings

• Tipton, Steven, M., Smith, Ross W., Theisen, Stephen A., Eddings, Forrest A., and Henshaw, John M., “Quantitative Fatigue Failure Analysis.” Submitted to ICEFA VI, Lisbon, Portugal, 2014.

• Tipton, S. Influence of a Straightener on Coiled Tubing Fatigue. Society of Petroleum Engineers – Coiled Tubing and Well Intervention Conference and Exhibition 2012, 2012, pp. 216-24.

• Kilambi, S. and Tipton, S.M., Development of an algorithm to measure defect geometry using a 3D laser scanner Published 25 June 2012, 2012 IOP Publishing Ltd., Measurement Science and Technology, Volume 23, Number 8

• Development of a Laser Scan Inspection Tool for Coiled Tubing. SPE/ICoTA Coiled Tubing & Well Intervention Conference and Exhibition. Society of Petroleum Engineers, 2011.

• McLagan J.R., Daily J.S., Tipton S.M., Shepherd C.M., Olson N.M., Marshall M.R., and Caruso J.F., “Assessment of the reliability of vertical jump performance from an instrumented platform.” NSCA National Conference and Exhibition Abstracts. Page 32, 2009.

• Statistical Analysis of Coiled Tubing Fatigue Data. Coiled Tubing and Well Intervention Conference and Exhibition 2009, 2009, pp. 150-6.
• Use of 3D Laser Imaging for Inspection of Coiled Tubing. Society of Petroleum Engineers – Coiled Tubing and Well Intervention Conference and Exhibition 2008, 2008, pp. 221-8.
• 16Cr Coiled-Tubing Field Trial at Prudhoe Bay, Alaska. Society of Petroleum Engineers Coiled Tubing and Well Intervention Conference and Exhibition 2007, 2007, pp. 102-7.
• Fatigue Life of Coiled Tubing With External Mechanical Damage. Society of Petroleum Engineers Coiled Tubing and Well Intervention Conference and Exhibition 2007, 2007, pp. 379-94.
• Fatigue Integrity Analysis of Rotating Coiled Tubing. Vol. 2006, 2006 SPE-ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, Proceedings, 2006, pp. 173-9.
• Influence of Prior Cycling on Fatigue Damage Caused by Defects in Coiled Tubing. Vol. 2006, 2006 SPE-ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, Proceedings, 2006, pp. 414-6.
• The Use of Finite-Element-Calculated MFL Signals to Study Characterization of Defects in Steel Coiled Tubing. Vol. 2006, 2006 SPE-ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, Proceedings, 2006, pp. 330-8.
• An Investigation of the Effects of the Physical Properties of Coiled Tubing on Fatigue Modeling. Vol. 2004, Proceedings of the SPE/ICoTA Coiled Tubing Roundtable Conference, 2004, pp. 281-7.
• Field Validation of a Coiled Tubing Fatigue Model. Proceedings of the SPE/ICoTA Coiled Tubing Roundtable Conf, 2003, pp. 84-89.
• Tipton, S. Low-Cycle Fatigue Testing of Tubular Material Using Non-Standard Specimens. ASTM Special Technical Publication, 1999, pp. 102-19.
• Energy Based Critical Plane Approach to Multiaxial Fatigue Analysis. ASTM Special Technical Publication, 1999, pp. 599-13.
• Fatigue Durability Enhancement by Controlled Overloading. ASTM Special Technical Publication, 1999, pp. 584-98.
• Residual Stress Estimation Using FEM and Neuber’s Rule at a Notch. Vol. 385, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 1999, pp. 287-91.
• Tipton, S. Varying Modulus of Elasticity for Coiled Tubing Material. Proceedings of the SPE/ICoTA Coiled Tubing Roundtable Conf, 1999, pp. 79-87.
• Tipton, S. Low-Cycle Fatigue Testing of Tubular Material Using Non-Standard Specimens. Vol. 1337, ASTM Special Technical Publication, 1998, pp. 102-19.
• Tipton, S. Multiaxial Plasticity and Fatigue Life Prediction in Coiled Tubing. Vol. 1292, ASTM Special Technical Publication, 1996, pp. 283-04.
• Development of a Cyclic High Pressure Fatigue Test System. Vol. 281, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 1994, pp. 63-71.
• Developments in Life Prediction of Notched Components Experiencing Multiaxial Fatigue. Vol. 290, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 1994, pp. 35-48.
• Experimental Determination of the Effect of Hole Interaction on Stress Concentrations in Angle Ply graphite/Epoxy Composite Panels. ASTM Special Technical Publication, 1993, pp. 238-4.
• Inelastic Stress-Strain Predictions for Multiaxial Fatigue Damage Evaluation. ASTM Special Technical Publication, 1993, pp. 273-97.
• Reverse Plasticity Criterion for Specifying Optimal Proof Load Levels. ASTM Special Technical Publication, 1993, pp. 186-02.
• Analysis of a Thick Walled 60 Degree Lateral Pipe. Vol. 238, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 1992, pp. 209-18.
• Fatigue Strength Reduction Imposed by Porosity in a Fiberglass Composite. ASTM Special Technical Publication, 1992, pp. 152-6.
• Plasticity and Fatigue Damage Modeling of Severely Loaded Tubing. ASTM Special Technical Publication, 1992, pp. 369-82.
• FATIGUE LIFE PREDICTIONS FOR A NOTCHED SHAFT IN COMBINED BENDING AND TORSION. ASTM Special Technical Publication, 1985, pp. 514-50.

Book Chapters

• “Fatigue Behavior of Fluid End Crossbore Using a Coupon-Based Approach”. Fracture, Fatigue, Failure and Damage Evolution, Volume 8, Springer, Cham, 2016, p. 115-23.
• “Notch Strain Analysis of Crossbore Geometry”. Fracture, Fatigue, Failure and Damage Evolution, Volume 8, Springer, Cham, 2016, p. 125-33.

Other

• Tipton, S.M. and Daily, J.S., “Internal Thread Strip-out Tests Yield Surprising Results,” Machine Design, Online at http://machinedesign.com/article/internal-thread-strip-out-tests-yield-surprising-results-
  0113?page=0%2C11 3 Jan 2011.

• Structural Fatigue
• Interdisciplinary Design Projects
• Mechanics of Materials

• SAE Ralph Teetor Engineering Educator Award
• Fellow of ASME
• Fellow of ASM
• OSPE Outstanding Engineer Award
• Tulsa University Outstanding Teacher Award
• Henry R. Worthinton Medal: ASME Petroleum Division
• Outstanding Teacher Award