Prof. M. Ehsani's Web Page

	*Mohammad "Mo" Ehsani, Ph.D., S.E.* Professor of Civil Engineering and Engineering Mechanics The University of Arizona 206 Civil Engineering Building, Tucson, AZ, 85721 (520) 621-6589 Ehsani@Arizona.edu www.Ehsani.US
Biographical Sketch: Professor Ehsani received B.S., M.S., and Ph.D. degrees from the University of Michigan before joining the department of Civil Engineering at the University of Arizona in 1982. His research has focused on seismic behavior of structures and innovative approaches to repair and retrofit civil structures with fiber composite (FRP) materials. These studies have been published in numerous technical papers in Earthquake Spectra and the ACI and ASCE Journals. Dr. Ehsani is a Fellow of the American Society of Civil Engineers (ASCE) and the American Concrete Institute (ACI). A past director of the Arizona Chapter of ACI, Professor Ehsani has served as President of the Structural Engineers Association of Arizona. He is a registered professional engineer in Arizona and California. Dr. Ehsani has been featured on CNN, National Public Radio, the History Channel, and in other media, including Engineering News Record (ENR) for his expertise on strengthening of structures, particularly related to earthquakes, terrorist attacks and other potential structural disasters. He holds several patents, including one on strengthening masonry structures with FRP. To view some of these articles, please click here. Following the 1994 Northridge Earthquake, he founded QuakeWrap, Inc., a company specializing in repair and retrofit of structures with FRP products. These products have been successfully used in a number of project; among the company’s clients are: United Airlines, Paloverde Nuclear Power Plant, ITT Sheraton, St. Joseph Hospital in Phoenix and the historic Fox Theatre in Tucson, AZ. QuakeWrap has been an industry leader in repair and retrofit of large diameter Prestressed Concrete Cylinder Pipes (PCCP) and received the 2008 Award of Excellence from the International Concrete Repair Institute (ICRI) for strengthening over 1000 feet of a 10-ft diameter PCCP for a major power plant in New Mexico. The latest invention of Professor Ehsani is PipeMedic. This patent-pending product and method consists of laminated sheets constructed with carbon or glass fabrics that are pre-cured during the manufacturing process. The long and thin flat sheets are coiled and held in the coiled position with a strap. Once taken inside the pipe through the manhole, the strap is removed and the laminate opens on its own and will conform to the shape of any pipe!
Education: B.S. University of Michigan M.S. University of Michigan Ph.D. University of Michigan Research Interest: Behavior of Structures Subjected to Static or Dynamic Loading; Behavior of Reinforced and Prestressed Concrete Structures; Rehabilitation and Strengthening Techniques for Existing Structures; Application of Fiber Composite Materials in Civil Engineering Structures; Nondestructive Evaluation of Materials; and Laboratory Testing of Structural Components. Teaching Websites: In fall 2008, information for the following courses are posted on the Univesity of Arizona's Designed To Learn (www.D2L.Arizona.edu): CE 214 - Statics CE 464A/564A - Integrated Bridge Design using the LRFD Methodology CE 596/EM 596 - Research Topics CE 435/535 - Prestressed Concrete Structures		Professional Registration: Arizona, Structural Engineer, License No. 20528 California, Civil Engineer, License No. C044401 Professional Affiliations: Fellow, American Concrete Institute Fellow, American Society of Civil Engineers Member, Earthquake Engineering Research Institute Links: Dept. of Civil Engineering - Univ. of Arizona College of Engrg. and Mines - Univ. of Arizona University of Arizona QuakeWrap, Inc. PipeMedic.com

Selected Publications Ehsani, M.R. and Wight, J.K. (1985). "Effect of Transverse Beams and Slab on Behavior of Reinforced Concrete Beam to Column Connections," J. of the American Concrete Institute (ACI), 82(2), 188-195; Disc. by A. Durrani and H. Gesund, 83(1), 1986. Ehsani, M.R. and Wight, J.K. (1985). "Exterior Reinforced Concrete Beam to Column Connections Subjected to Earthquake Type Loading," J. of the American Concrete Institute (ACI), 82(4), 492-499. Blewitt, J.R. and Ehsani, M.R. (1986). "Design Curves for Tendon Profile in Prestressed Concrete Beams," Prestressed/Precast Concrete Institute J., 31(3), 114-135; Disc. by D.M.F. Orr, 32(2) , 135. Ehsani, M.R. (1986). "CAD for Columns," Concrete International, 8(9), 43-47; Disc. by T. Brondum-Nielsen and W.J. Paul, 9(3), 1987. Ehsani, M.R. and Bjorhovde, R. (1986). "Deflection Criteria for Sign Support Structures," J. of Struct. Eng. Div., ASCE, 112(10), 2332-2341. Ehsani, M.R., Moussa, A.E., and Vallenilla, C.R. (1987). "Comparison of Inelastic Behavior of Reinforced Ordinary- and High-Strength Concrete Frames," ACI Structural J., 84(2), 161-169. Martin, K.A., Ehsani, M.R., and Bjorhovde, R. (1987). "Field Testing of Highway Sign Support Structures," J. of Struct. Eng. Div., ASCE, 113(4), 850-863. Ehsani, M.R. and Alameddine, F. ( 1987). "Refined Stiffness of Slender Circular Reinforced Concrete Columns," ACI Structural J., 84(5), 419-427. Ehsani, M.R. and Bjorhovde, R. (1988). "Behavior of Monotube Highway Sign Support Structures," J. of Struct. Eng. Div., ASCE, 114(12), 2755-2772. Saadatmanesh, H. and Ehsani, M.R. (1990). "Fiber Composite Plates Can Strengthen Concrete Beams," Concrete International, 12(3), 65-71. Ehsani, M.R. and Wight, J.K. (1990). "Confinement Steel Requirements for Connections in Ductile Frames," J. of Struct. Eng. Div., ASCE, 116(3), 751-767; Disc. by M. Rodriguez and R. Park, 118(5), 1992. Ehsani, M.R. and Saadatmanesh, H. (1990). "Fiber Composite Plates for Strengthening Bridge Beams," Composite Structures, 15(4), 343-355. Saadatmanesh, H. and Ehsani, M.R. (1991). "Fiber Composite Bar for Reinforced Concrete Construction," J. of Composite Materials, 25(2), 188-203. Alameddine, F. and Ehsani, M.R. (1991). "High-Strength R/C Connections Subjected to Inelastic Cyclic Loading," J. of Struct. Eng. Div., ASCE, 117(3), 829-850. Ehsani, M.R. and Alameddine, F. (1991). "Design Recommendations for Type 2 High-Strength Reinforced Concrete Connections," ACI Structural J., 88(3), 277-291. Saadatmanesh, H. and Ehsani, M.R. (1991). "R/C Beams Strengthened with Glass Fiber Reinforced Plastic (GFRP) Plates: Experimental Study," J. of Struct. Eng. Div., ASCE, 117(10), 3417-3433. An, W., Saadatmanesh, H. and Ehsani, M.R. (1991). "R/C Beams Strengthened with Fiber Reinforced Plastic (FRP) Plates: Analysis and Parametric Study," J. of Struct. Eng. Div., ASCE, 117(10), 3434-3455. Ochs, J.E., and Ehsani, M.R., (1993). "Moment Resistant Connections in Precast Concrete Frames for Seismic Regions," Prestressed/Precast Concrete Institute Journal, 38(5), 64-75. Saadatmanesh, H., Ehsani, M.R. and Li, M.W. (1994). "Strength and Ductility of Concrete Columns Externally Reinforced with Fiber Composite Straps," ACI Structural J., 91(4), 434-447. Char, M.S., Saadatmanesh, H., and Ehsani, M.R.. (1994). "Concrete Girders Externally Prestressed with Composite Plates," Prestressed/Precast Concrete Institute J., 39(3), 40-51. Saadatmanesh, H., Ehsani, M.R., and Yanez, J.C. (1995). "Hydration and Early-Age Strength Measurement of Concrete Using Nuclear Magnetic Resonance (NMR)," Int'l J. of Advances in Nondestructive Testing and Evaluation, 12, 133-153. Ehsani, M.R., Saadatmanesh, H., and Tao, S. (1995). "Bond of Hooked Glass Fiber Reinforced Plastic (GFRP) Reinforcing Bars to Concrete," ACI Materials J., 92(4), 391-400. Ehsani, M.R., Saadatmanesh, H., and Tao, S. (1996). "Design Recommendations for Bond of GFRP Rebars to Concrete," J. of Struct. Eng. Div., ASCE, 122(3), 247-254. Saadatmanesh, H., Ehsani, M.R., and Jin, L. (1996). "Seismic Strengthening of Circular Bridge Pier Models with Fiber Composites," ACI Struct. J., 93(6), 639-647. Ehsani, M.R., Saadatmanesh, H. (1996). "Seismic Retrofitting of URM Walls with Fiber Composites," J. of The Masonry Society, 14(2), 63-72. Ehsani, M.R., Saadatmanesh, H., and Al-Saidy, A. (1997). “Shear Behavior of URM Retrofitted with FRP Overlays,” J. of Composites for Construction, ASCE, 1(1), 17-25. Saadatmanesh, H., and Ehsani, M.R. (1997). "Nondestructive Evaluation of Concrete and Wood Properties Using NMR," INSIGHT (The Journal of the British Institute of Non-Destructive Testing), 39(2), 75-82. Ehsani, M.R., Saadatmanesh, H., and Thompson, C.E. (1997). “Transfer and Flexural Bond Performance of Aramid and Carbon FRP Tendons,” Prestressed/Precast Concrete Institute J., 42(1), 76-86. Ehsani, M.R., Saadatmanesh, H., and Tao, S. (1997). "Bond Behavior of Deformed GFRP Rebars," J. of Composite Materials, 31(14), 1413-1430. Saadatmanesh, H., Ehsani, M.R., and Jin, L. (1997). "Repair of Earthquake-Damaged R/C Columns with FRP Wraps," ACI Structural J., 94(2), 206-215. Saadatmanesh, H., Ehsani, M.R., and Jin, L. (1997). "Seismic Retrofitting of Rectangular Bridge Columns with Composite Straps," Earthquake Spectra, 13(2), 281-304. Ehsani, M.R., Saadatmanesh, H. (1997). "Fiber Composites: An Economical Alternative for Retrofitting Earthquake-Damaged Precast-Concrete Walls," Earthquake Spectra, 13(2), 225-241. Norris, T., Saadatmanesh, H., and Ehsani, M.R. (1997). "Shear and Flexural Strengthening of R/C Beams with Carbon Fiber Sheets," J. of Struct. Eng. Div., ASCE, 123(7), 903-911. Malek, A.M., Saadatmanesh, H., and Ehsani, M.R. (1998). “Prediction of Failure Load of R/C Beams Strengthened with FRP Plate Due to Stress Concentration at the Plate End,” ACI Structural J., 95(1), 142-152. Larsen, M.H., Saadatmanesh, H., and Ehsani, M.R. (1998). "Nondestructive Testing of Wood using Nuclear Magnetic Resonance (NMR) Spectroscopy," INSIGHT (The Journal of the British Institute of Non-Destructive Testing), 40(7), 505-512. Kundu, T., Ehsani, M.R., Maslov, K.I., and Gau, D. (1999). “C-scan and L-scan generated images of the concrete/GFRP composite interface,” NDT & E International, 32, 61-69. Ehsani, M.R., Saadatmanesh, H., and Velazquez-Dimas, J.I. (1999). "Behavior of Retrofitted URM Walls under Simulated Earthquake Loading," ASCE Journal of Composites for Construction, 3(3) 134-142. Velazquez-Dimas, J.I., Ehsani, M.R., and Saadatmanesh, H. (2000). "Out-of-Plane Behavior of Brick Masonry Walls Strengthened with Fiber Composites," ACI Structural J., 97(3), 377-387. Velazquez-Dimas, J.I., and Ehsani, M.R. (2000). "Modeling Out-of-Plane Behavior of URM Walls Retrofitted with Fiber Composites,” ASCE Journal of Composites for Construction, 4(4), 172-181. Jung, Y.C., Kundu, T., and Ehsani, M.R. (2001). “Internal Discontinuity Detection in Concrete by Lamb Waves," Materials Evaluation, 59(3),418-423. Mei, H., Kiousis, P.D., Ehsani, M.R., and Saadatmanesh, H. (2001). "Confinement Effects on High Strength Concrete," ACI Structural J., 98(4), 548-553. Na, W.B., Kundu, T., and Ehsani, M.R. (2002). “Ultrasonic Guided Waves for Steel Bar-Concrete Interface Testing,” Materials Evaluation, 60(3), 437-444. Jung, Y.C., Kundu, T., and Ehsani, M.R. (2002). “A New Nondestructive Inspection Technique for Reinforced Concrete Beams,” ACI Materials J., 99(3), 292-299. Towfighi, S., Kundu, T., and Ehsani, M.R. (2002). “Elastic Wave Propagation in Circumferential Direction in Anisotropic Cylindrical Curved Plates,” Journal of Applied Mechanics, 69(3), 283-291. Na, W.B., Kundu, T., and Ehsani, M.R. (2003). “Lamb Waves for Detecting Delamination between Steel Bars and Concrete, ” Computer-Aided Civil and Infrastructure Engineering, 18, 58-63. Na, W.B., Kundu, T., and Ehsani, M.R. (2003). “A Comparison of Steel/Concrete and Glass-Fiber Reinforced Polymers/Concrete Interface Testing by Guided Waves, ” Materials Evaluation, 61(2), 155-161.