Akhrawat Lenwari, PhD

Associate Professor, Structural Engineering

 

Department of Civil Engineering
Faculty of Engineering

Chulalongkorn University
Phayathai Rd.
, Pathumwan, Bangkok 10330 THAILAND

Phone: 02-218-6693, Fax: 02-251-7304

Email: akhrawat.l@chula.ac.th

 

 

Education

B.Eng. (Honors), Department of Civil Engineering, Chulalongkorn University, Thailand, 1998.

Ph.D., Department of Civil Engineering, Chulalongkorn University, Thailand, 2003.

 

Research Interests

Strengthening and repair of bridges and buildings, fatigue and fracture mechanics, finite element analysis, advanced structural analysis, adhesive-bonded joints, fiber-reinforced composite materials, and composite structures.

 

Work Experience

Associate Professor, Department of Civil Engineering, Chulalongkorn University, 2011-present.

Lecturer, Department of Civil Engineering, Chulalongkorn University, 2007-2011.

Lecturer, Department of Civil Engineering, Srinakharinwirot University, 2007.

Post-Doctoral Researcher, Department of Civil and Environmental Engineering, University of Maryland, College Park, USA, 2003-2006.

 

Professional Activities

Registered Civil Engineer, Council of Engineers (Thailand).

Member, Subcommittee on Steel Structures, Engineering Institute of Thailand (2010-present).

 

Published Journal Papers

o   Lenwari, A., Thepchatri, T., and Watanabe, E. (2002). “Prediction of Premature Separation of Bonded CFRP Plates from Strengthened Steel Beams Using a Fracture Criterion.” Structural Engineering and Mechanics, Vol.14, No. 5, 565-574.

o   Lenwari, A., Albrecht, P., and Albrecht, M. (2005). “SED Method of Measuring Yield Strength of Adhesives and Other Materials.” Journal of ASTM International, Vol. 2, No. 10, 377-394.

o   Lenwari, A., Thepchatri, T., and Albrecht, P. (2005). Flexural Response of Steel Beams Strengthened with Partial-Length CFRP Plates.” Journal of Composites for Construction, ASCE, Vol. 9, No. 4, 296-303.

o   Lenwari, A., Thepchatri, T., and Albrecht, P. (2006). “Debonding Strength of Steel Beams Strengthened with CFRP Plates.” Journal of Composites for Construction, ASCE, Vol. 10, No. 1, 69-78.

o   Albrecht, P. and Lenwari, A. (2006). “Stress Intensity Factor for Center-Cracked Plate with Crack Surface Interference.” Engineering Fracture Mechanics, Vol. 73, No. 8, 1035-1045.

o   Albrecht, P. and Lenwari, A. (2007). “Fatigue-Proofing Cover Plates.” Journal of Bridge Engineering, ASCE, Vol. 12, No. 3, 275-283.

o   Albrecht, P. and Lenwari, A. (2008). “Fatigue Strength of Trolley Bridge Stringers Made of ASTM A7 Steel.” Journal of Bridge Engineering, ASCE, Vol. 13, No. 1, 67-74.

o   Albrecht, P., Lenwari, A., and Feng, D. (2008). “Stress Intensity Factors for Structural Steel I-Beams.” Journal of Structural Engineering, ASCE, Vol. 134, No. 3, 421-429.

o   Albrecht, P. and Lenwari, A. (2008). Fatigue Strength of Repaired Prestressed Composite Beams.” Journal of Bridge Engineering, ASCE, Vol. 13, No. 4, 409-417.

o   Albrecht, P. and Lenwari, A. (2008). “Design of Prestressing Tendons for Strengthening Steel Truss Bridges.” Journal of Bridge Engineering, ASCE, Vol. 13, No. 5, 449-454.

o   Lenwari, A. and Thepchatri, T. (2009). “Experimental Study on RC Beams Strengthened with Carbon and Glass Fiber Sheets.” Engineering Journal, Vol. 13, no. 2, 9-18.

o   Albrecht, P. and Lenwari, A. (2009). “Variable Amplitude Fatigue Strength of Structural Steel Bridge Details: Review and Simplified Model.” Journal of Bridge Engineering, ASCE, Vol. 14, No. 4, 226-237.

o   Albrecht, P. and Lenwari, A. (2009). “Fatigue Strength of Weathered A588 Steel Beams.” Journal of Bridge Engineering, ASCE, Vol. 14, No. 6, 436-443.

o   Lenwari, A., Thepchatri, T., and Santisukpotha, P. (2012). “A Fracture-Based Criterion for Debonding Strength of Adhesive-Bonded Double-Strap Steel Joints.” Engineering Journal, Vol. 16, No. 1, 17-25.

o   Lenwari, A. and Chen, H. (2013). “Finite Element Analysis of Distortion-Induced Web Gap Stresses in Multi-I Girder Steel Bridges." Engineering Journal, Vol. 17, No. 1, 95-109.

o   Dinh, H.T., Lenwari, A., Senjuntichai T, and Hayashikawa T. (2013). “Finite Element Simulation of Mixed-Mode Crack Propagation Based on Strain Energy Density Criterion.” ASEAN Engineering Journal Part C, Vol. 2, No. 2, 66-77.

o   Dinh, H.T., Lenwari, A., Senjuntichai T, and Hayashikawa T. (2014). “Distortion-Induced Fatigue Cracking at Web-Gap of Welded I-Beams.” ASEAN Engineering Journal Part C, Vol. 3, No, 1, 9-20.

o   Ky, V.S., Lenwari, A., and Thepchatri, T. (2015). “Optimum Design of Steel Structures in Accordance with AISC 2010 Specification Using Heuristic Algorithm.” Engineering Journal, Vol. 19, No. 4, 71-81.

o   Wantanasiri, P. and Lenwari, A. (2015). “Intermediate Crack-Induced Debonding Analysis for RC Beams Strengthened with FRP Plates.” Structural Engineering and Mechanics, Vol. 56, No. 3, 473-490.

o   Lenwari, A., Rungamornrat, J., and Woonprasert, S. (2016). “Axial Compression Behavior of Fire-Damaged Concrete Cylinders Confined with CFRP Sheets.” Journal of Composites for Construction, ASCE, Vol. 20, No. 5, 04016027.

o   Tiantongnukul, S. and Lenwari, A. (2017). “Thermal Analysis for Peak Temperature Distribution in Reinforced Concrete Beams After Exposure to ASTM E119 Standard Fire.” Engineering Journal, Vol. 21, No. 4, 243-258.

o   Triamlumlerd, W. and Lenwari, A. (2017). “Analysis of Fatigue Crack Propagation in Steel I-Beams with Welded Transverse Stiffeners Subjected to In-plane Loadings.” Engineering Journal, Vol. 21, No. 4, 307-324.

o   Lenwari, A. and Ma, H.C. (2019). “Stress Intensity Factor for Wide-Flange Steel Member with Crack Surface Interference.” Journal of Constructional Steel Research, Vol. 153, 310-319.

o   Thongchom, C., Lenwari, A., and Aboutaha, R.S. (2019). “Effect of Sustained Service Loading on Post-Fire Flexural Response of RC T-Beams.” ACI Structural Journal, Vol. 116, No. 3, 243-254.

o   Anuntasena, W., Lenwari, A., and Thepchatri, T. (2019). “Finite Element Modelling of Concrete-Encased Steel Columns Subjected to Eccentric Loadings.” Engineering Journal, Vol. 23, No. 6, 299-310.

o   Horsangchai, V. and Lenwari, A. (2020). “Evaluation of AISC 360-16 and Eurocode 4 Compressive Strength Equations for Concrete-Filled Steel Tube Columns.” Engineering Journal, Vol. 24, No. 1, 89-104.

o   Prasertsri, T., Lenwari, A., and Thepchatri, T. (2020). “Flexural Response of CFRP-Strengthened Steel Beams with Initial Bond Defects.” Engineering Journal, Vol. 24, No. 1, 115-127.

o   Thongchom, C., Lenwari, A., and Aboutaha, R.S. (2020). “Bond Properties Between Carbon Fibre-Reinforced Polymer Plate and Fire-Damaged Concrete.” International Journal of Adhesion and Adhesives, Vol. 97, 102485.

o   Do, B., and Lenwari, A. (2020). “Optimization of Fiber-Reinforced Polymer Patches for Repairing Fatigue Cracks in Steel Plates Using a Genetic Algorithm.” Journal of Composites for Construction, ASCE, Vol. 24, No. 2, 04020006.

o   Lenwari, A., Thongchom, C., and Aboutaha, R.S. “Cyclic Flexural Performance of Fire-Damaged RC Beams Strengthened with CFRP Plates.” ACI Structural Journal (accepted for publication).

o   Anuntasena, W., Lenwari, A., and Thepchatri, T. “Axial Compression Behavior of Concrete-Encased Cellular Steel Columns.” Journal of Constructional Steel Research (accepted for publication).

 

Papers in Conference Proceedings

o   Lenwari, A., Likitlersuang, S., Taetiangthum, S., and Teachavorasinskun, S. (1999). “Behavior of Soil under Unloading Condition.” The 5th National Convention on Civil Engineering, Chonburi, Thailand, GTE173-178.

o   Lenwari, A. and Thepchatri, T. (2001). “Prediction of Failure Load in Steel Beams Bonded with CFRP Plates Due to Fracture at Plate Ends Using Stress Singularity Parameter.” The 14th KKNN Symposium on Civil Engineering, Kyoto, Japan, 259-265.

o   Pinkaew, T. and Lenwari, A. (2002). “Field Performance Test of R/C Beams Strengthened by Carbon Fiber Sheets.” The 8th National Convention on Civil Engineering, Konkaen, Thailand, STR392-397.

o   Lenwari, A., Albrecht, P., and Albrecht, M. (2005). “SED Method of Measuring Yield Strength of Adhesives and Other Materials.” Advances in Adhesives, Adhesion Science, and Testing, ASTM STP 1463, D. Damico, Ed., American Society for Testing and Materials, Washington, D. C., 35-52.

o   Senjuntichai, T. and Lenwari, A. (2008). “Three-Dimensional Finite Element Analysis of Flyover Steel Bridges.” The 4th International Conference on Advances in Structural Engineering and Mechanics (ASEM’08), Jeju, Korea, May 26-28, 435-444.

o   Hidayat, M.S. and Lenwari, A. (2009). “Effects of Bridge Parameters on Distortion-Induced Fatigue in Multi I-Girder Steel Bridges.” The 1st ASEAN Civil Engineering Conference, Pattaya, Thailand, March 12-13.

o   Lenwari, A. (2009). “Compliance Ratio Method for Calculating Energy Release Rates in Structural Steels.” The 41st ASCE Structures Congress 2009, Austin, Texas, April 30-May 2009, pp. 2169-2178.

o   Lenwari, A., Senjuntichai, T., Pinkaew, T., Thepchatri, T., and Limsuwan, E. (2009). “Field investigation on slab-on-girder steel bridges over intersections in Thailand.” The 33rd IABSE Symposium, Bangkok, Thailand, September 9-11, 2009.

o   Santisukpotha, P., Lenwari, A., and Thepchatri, T. (2009). “Debonding Strength of FRP-Plated Steel Beams Subjected to Constant Amplitude Fatigue Loadings.” The 22nd KKCNN Symposium on Civil Engineering, Chiangmai, Thailand, October 31- November 2, 2009, pp. 205-210.

o   Dinh, H.T., Lenwari, A., and Senjuntichai, T. (2011). “Finite Element Modeling of 2D Mixed-Mode Crack Propagation Using Strain Energy Density Criterion.” The 4th ASEAN Civil Engineering Conference, Yogyakarta, Indonesia, 22-23 November 2011 (CD-ROM).

o   Prasertsri, T., Lenwari, A., and Rungamornrat, J. (2013). “Finite Element Analysis of Strength and Ductility of Concrete Cylinders Partially Confined with FRP Sheets Using Drucker-Prager Yield Criterion.” The 6th ASEAN Civil Engineering Conference, Bangkok, 21-22 November 2013, pp. CE28-1 to CE28-10.

o   Dinh, H.T., Lenwari, A., Senjuntichai, T., and Hayashikawa, T. (2013). “Distortion-Induced Fatigue Cracking at Web-Gap of Steel Build-Up I-Beams.” The 6th ASEAN Civil Engineering Conference, Bangkok, 21-22 November 2013, pp. CE35-1 to CE35-11.

o   Loedpattanapan, N. and Lenwari, A. (2015). “Heat Transfer Analysis of Concrete-Encased Steel Columns Subjected to ISO 834 Standard Fire.” The 28th KKHTCNN Symposium on Civil Engineering, November 16-18, 2015, Bangkok, Thailand.

o   Thongchom, C., Jitsumroeng, S., Lenwari, A., and Aboutaha, R.S. (2017). “Experimental Study on Reinforced Concrete T-Beams at Elevated Temperatures.” The 15th East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-15), Xian, China, 11-13 October 2017, pp. 1406-1413.

o   Do, B. and Lenwari, A. (2018). “Empirical Stress Intensity Factor Equations for Cracked Steel Plates Repaired with Double-Sided FRP Patches.” IOP Conference Series: Materials Science and Engineering, Vol. 371, No. 1, 012056.

o   Vu, D. and Lenwari, A. (2019). “Analysis of Fire-Damaged Concrete-Filled Steel Tube Columns Confined with FRP Sheets.” IOP Conference Series: Materials Science and Engineering, Vol. 600, No. 1, 012016.

 

Books

o   Lenwari, A. (2018). Strengthening of Reinforced Concrete Structures with Fiber-Reinforced Polymers, 1st edition, Chulalongkorn University Press, Bangkok. (in Thai).

o   Thepchatri, T. and Lenwari, A. (2019). Behavior and Design of Steel Structures. 5th edition, Chulalongkorn University Press, Bangkok. (in Thai).

 

Teaching Courses

o   2101307 Reinforced Concrete Design

o   2101312 Structural Analysis II

o   2101406 Steel and Timber Design

o   2101510 Computer Methods for Civil Engineering

o   2101801 Fracture Mechanics

o   2101806 Numerical and Approximate Methods for Structural Engineering

 

Reviewers

o   Journal of Composites for Construction, ASCE

o   Journal of Engineering Mechanics, ASCE

o   Journal of Bridge Engineering, ASCE

o   International Journal of Fatigue

o   ACI Structural and Materials Journals

o   Engineering Structures

o   Construction and Building Materials

o   Structural Engineering and Mechanics

o   Structure and Infrastructure Engineering

o   Mechanics of Advanced Materials and Structures

o   Theoretical and Applied Fracture Mechanics

o   European Journal of Environmental and Civil Engineering

o   Engineering Journal

o   ASEAN Engineering Journal

o   Songklanakarin Journal of Science and Technology

o   Suranaree Journal of Science and Technology

o   Khon Kaen University Engineering Journal

 

 

Last updated in June 2020