The AEWC Center   

The Advanced Engineered Wood Composites Center

The Advanced Structures and Composites Laboratory

William G. Davids, Ph.D., P.E.

Associate Professor of Civil and Environmental Engineering

University of Maine

5711 Boardman Hall

Orono, ME  04469-5711

Phone: (207) 581-2116

Fax: (207) 581-3888

e-mail: william.davids@umit.maine.edu

web: www.umeciv.maine.edu/davids

Education

Ph.D. in Civil/Structural Engineering, University of Washington, 1998

Dissertation: Modeling of Rigid Pavements: Joint Shear Transfer Mechanisms and Finite Element

Solution Strategies

M.S. in Civil/Structural Engineering, University of Maine, 1991

B.S. in Civil Engineering, University of Maine, 1989

Academic and Professional Experience

9/04 – present:             Associate Professor of Civil/Structural Engineering, University of Maine

Cooperating Associate Professor of Mechanical Engineering

9/98 – 8/04: Assistant Professor of Civil/Structural Engineering, University of Maine

9/94 – 7/98: Graduate Research Assistant, University of Washington

4/91 – 9/94: Structural Engineer, Sverdrup Corporation, Seattle, WA (now Jacobs Engineering)

·         Design of reinforced and prestressed concrete bridges

·         Retrofit and design of movable bridges and components

·         Preliminary design of two cable-stayed bridges

9/89 – 1/91: Graduate Research Assistant, University of Maine

1987 – 1989: Engineer/Engineering Assistant (summers), Kleinschmidt Associates, Pittsfield, ME

·         Computer-based dam breach analyses and open-channel flow modeling, energy analyses

Honors and Awards

Civil Engineering Professor of the Year Award, University of Maine, 2003-2004 (awarded by students)

College of Engineering Early Career Research Award, University of Maine, 2002

Osberg Family Trust Fellowship Recipient, University of Washington, 1997

Valle Scholarship Recipient, University of Washington, 1994

University Graduate Research Assistantship Recipient, University of Maine, 1990

Valedictorian, University of Maine, Class of 1989

Outstanding Civil Engineering Senior, University of Maine, Class of 1989

Member of Tau Beta Pi and Chi Epsilon honor societies

Professional Registration and Affiliations

Registered Professional Engineer in Maine (No. 9195) and Washington (No. 32770)

Member, ASCE

Research Interests

Numerical methods and Finite Element analysis in structural mechanics and civil engineering

Mechanics of wood and wood structures

Development of simulation-based software tools for structural analysis and design

Bridge engineering
Peer-Reviewed Journal Publications

Davids, W.G., Richie, M. and Gamache, C. (2004). “Flexural Fatigue of Glulam Beams with Fiber-Reinforced Polymer Tension Reinforcing.” Forest Products Journal, Forest Products Society (accepted pending revisions).

Muszyński, L., Lagana, R., Shaler, S.M. and Davids, W. (2004). “Comments on the Experimental Methodology for Determination of the Hygro-mechanical Properties of Wood.” Holzforschung, Walter de Gruyter (in press).

Merrifield, J.D, Davids, W.G., MacRae, J.D., Amirbahman, A. (2004). “Uptake of Mercury by Thiol-Grafted Chitosan Gel Beads.” Water Research, International Water Association, 38(13):3132-3138.

Weaver, C., Davids, W.G. and Dagher, H.J. (2004). “Testing and Analysis of Partially Composite FRP-Glulam-Concrete Bridge Girders.” Journal of Bridge Engineering, ASCE, 9(4):316-325.

Davids, W.G., Wang, Z.M., Turkiyyah, G., Mahoney, J. and Bush, D. (2003). “3D Finite Element Analysis of Jointed Plain Concrete Pavement with EverFE2.2.” Transportation Research Record 1853, TRB, National Research Council, Washington, D.C., pp 92-99.

Davids, W.G., Landis, E.N. and Vasic, S. (2003). “Lattice Models for the Prediction of Load-Induced Damage and Failure in Wood.” Wood and Fiber Science, Society of Wood Science and Technology, 35(1):120-134.

Landis, E.N., Vasic, S., Davids, W.G. and Parrod, P. (2002). “Coupled Experiments and Simulations of Microstructural Damage in Wood.” Experimental Mechanics, Society for Exp. Mechanics, 42(4):389-394.

Evans, J.R., Davids, W.G., MacRae, J. and Amirbahman, A. (2002). “Kinetics of Cadmium Uptake by Chitosan-Based Crab Shells.” Water Research, International Water Association, 36(13):3219-3226.

Davids, W.G. (2001). “Nonlinear Analysis of FRP-Glulam-Concrete Beams with Partial Composite Action.” Journal of Structural Engineering, ASCE, 127(8):967-971.

Davids, W.G. (2001). “3D Finite Element Study on Load Transfer at Doweled Joints in Flat and Curled Rigid Pavements.” International Journal of Geomechanics, ASCE, 1(3):309-323.

Davids, W.G. (2000). “Foundation Modeling for Jointed Rigid Pavements.” Transportation Research Record 1730, TRB, National Research Council, Washington, D.C., pp. 34-42.

Davids, W.G., Dagher, H.J. and Breton, J. (2000). “Modeling Creep Deformations of FRP-Reinforced Glulam Beams.” Wood and Fiber Science, Society of Wood Science and Technology, 32(4):426-441.

Davids, W.G. (2000). “Effect of Dowel Looseness on Response of Jointed Concrete Pavements.” Journal of Transportation Engineering, ASCE, 126(1):50-57.

Davids, W.G. and Mahoney, J. (1999). “Experimental Verification of Rigid Pavement Joint Load Transfer Modeling with EverFE.” Transportation Research Record 1684, TRB, National Research Council, Washington, D.C., pp. 81-89.

Davids, W.G. and Turkiyyah, G.M. (1999). “Multigrid Preconditioner for Unstructured Nonlinear 3D FE Models.” Journal of Engineering Mechanics, ASCE, 125(2):186-196.

Davids, W.G., Turkiyyah, G.M. and Mahoney, J. (1998). “EverFE – Rigid Pavement Finite Element Analysis Tool.” Transportation Research Record 1629, TRB, National Research Council, Washington, D.C., pp. 41-49.

Davids, W.G. and Turkiyyah, G.M. (1997). “Development of Embedded Bending Member to Model Dowel Action.” Journal of Structural Engineering, ASCE, 123(10):1312-1320.

Elgaaly, M., Davids, W. and Dagher, H. (1992). “Non-Slender Single Angle Struts.” Engineering Journal, AISC, 29(2):49-58.

Elgaaly, M., Dagher, H. and Davids, W. (1991). “Behavior of Single Angle Compression Members.” Journal of Structural Engineering, ASCE, 117(12):3720-3740.

Software Developed

EverFE (http://www.civil.umaine.edu/EverFE)

EverFE is a software package for the linear and nonlinear 3D finite element analysis of jointed plain concrete pavements. It couples a highly interactive graphical user interface for model development and result visualization written in Tcl/Tk/Tix/vTk with finite element code written in object-oriented C++. The finite element code employs a multigrid-preconditioned conjugate gradient solver suitable for use with un-nested mesh sequences, multiple element types, and problems involving inequality constraints arising from nodal contact. Specialized elements and constitutive relations are used to model dowel and aggregate interlock load transfer across transverse and longitudinal pavement joints. The Universities of Maine and Washington jointly developed EverFE with funding from the Washington and California State Departments of Transportation. EverFE is available free of charge to pavement engineers and researchers, and is used both nationally and internationally by University researchers and pavement engineers. To date, the fundamental developments underlying EverFE and its implementation have resulted in eight journal publications and numerous academic conference presentations. The principal developer of EverFE is W. Davids; other contributors include Z. Wang, G. Turkiyyah, and J. Mahoney.

Patent

Dagher, H.J. and Davids, W.G. (2004). “Wood composite panels for disaster-resistant construction.” U.S. Patent No. 6,699,575 issued March 2, 2004. European patents also granted.

Conference Papers (*fully peer-reviewed)

Nagy, E.N., Peterson, M.L., Davids, W.G., Landis, E.N. (2004). “Modeling the Pulvinus.” Proceedings of EM2004 – The 17^th ASCE Engineering Mechanics Conference, Newark, DE, July 13-16 (CD-ROM).

Davids, W.G., Richie, M., Gamache, C. (2004). “Flexural Fatigue of Glulam Beams with Fiber-Reinforced Polymer Tension Reinforcing.” ASCE Structures Congress 2004:Building on the Past, Securing the Future. Nashville, TN, May 22-26, (CD-ROM).

Davids, W.G., Dagher, H.J., Cassidy, E.D., Martin, K. and Gardner, D. (2004). “FRP-reinforced Oriented Strand Board Panels in Wood-Framed Shear Wall Construction.” Proceedings of the NSF Housing Research Agenda Workshop Vol. II. Feb 12-14, 2004, Orlando, Florida. Eds. Syal, M, Mullins, M., and Hastak, M. (invited).

Landis, E., Fournier, C. and Davids, W. (2003). “Modeling Scale Effects in Wood with Lattice Models.” Proceedings of EM2003 – The 16^th ASCE Engineering Mechanics Conference, Seattle, WA, July 16-18, (CD-ROM).

Davids, W.G., Cassidy, E., Dagher, H.J. and Gardner, D. (2003). “FRP-reinforced Oriented Strand Board Panels for Disaster-Resistant Construction.” ASCE Structures Congress 2003: Engineering Smarter. Seattle, WA, May 29-31, (CD-ROM).

Sanchez, O., Landis, E.N. and Davids, W.G. (2003). “Performance Study of In-Service FRP-Reinforced Glulam Bridge Girders.” ASCE Structures Congress 2003: Engineering Smarter. Seattle, WA, May 29-31, (CD-ROM).

*Landis, E. N., Davids, W. G., Parrod, P., and Vasic, S. (2003). “Lattice Models for Wood and Wood Fracture.” Proceedings of the 2^nd International Conference of the European Society for Wood Mechanics, Stockholm, Sweden, pp. 131-136.

Dagher, H.J., Stamato, G. and Davids, W.G. (2002). “Applicability of European Yield Model for Nailed Joints Using Reinforced OSB.” Proceedings of the 7^th World Conference on Timber Engineering, Shah Alam, Malaysia, August 2002.

Parrod, P., Landis, E.N., Davids, W.G. and Vasic, S. (2002). “Morphology-Based Models for Wood and Wood-Based Composites,” Proceedings of EM2002 – The 15^th ASCE Engineering Mechanics Conference, New York, NY, June 3-6, (CD-ROM).

Davids, W.G., Weaver, C., and Dagher, H.J. (2002). “FRP-Glulam-Concrete Bridge Girders with Partial Composite Action.” ASCE Structures Congress 2002: Performance of Structures – From Research to Design, Denver, CO, April 4-6, (CD-ROM).

Davids, W.G., Weaver, C., and Dagher, H.J. (2001). “Modeling FRP-Glulam-Concrete Beams with Nonlinear Partial Composite Action.” 2^nd International Conference on Advanced Engineered Wood Composites, Bethel, ME, August 14-16, (CD-ROM).

Weaver, C., Dagher, H.J., and Davids, W.G. (2001). “Experimental Behavior of FRP-Glulam-Concrete Composites for Bridge Applications.” 2^nd International Conference on Advanced Engineered Wood Composites, Bethel, ME, August 14-16, (CD-ROM).

Landis, E.N., Vasic, S., Parrod, P. and Davids, W.G. (2001). “Experiments and Simulations of Microstructural Damage in Wood,” Proceedings of the SEM Annual Conference on Experimental and Applied Mechanics, Portland, OR, Society for Experimental Mechanics, pp. 163-165.

Dagher, H. and Davids, W. (2000). “A New Generation of Wood-FRP Hybrid Composites Can Improve Disaster Resistance.” Proceedings of the 2^nd Annual Conference on Durability and Disaster Mitigation in Wood-Frame Housing, Madison, WI, Forest Products Society, Nov. 6-8, pp. 167-174.

Brody, J., Richard, A., Sebesta, K., Wallace, K., Hong, Y., Lopez-Anido, R., Davids, W., Landis, E. (2000) “FRP-Wood-Concrete Composite Bridge Girders.” ASCE Structures Congress 2000: Advanced Technology in Structures, Philadelphia, PA, May 8-10, (CD-ROM).

Davids, W.G., Dagher, H.J., and Breton, J. (1999). “Experimental and Numerical Study on Creep of FRP Reinforced Glulam Beams.” In Proceedings of the 1^st RILEM Symposium on Timber Engineering, Stockholm, Sweden, Sept. 12-14, pp. 581-590.

Davids, W. (1999). “Multigrid Preconditioning for Unstructured 3D FE Analysis.” In Proceedings of the 13th ASCE Engineering Mechanics Division Specialty Conference, Johns Hopkins University, Baltimore, MD, June 13-16, (CD-ROM).

Elgaaly, M., Dagher, H., and Davids, W. (1991). “Inelastic Buckling of Single Angle Members.” Proceedings of the 1991 Annual Technical Session on Inelastic Behavior and Design of Frames, Structural Stability Research Council, p. 369, April 15-17.

Dagher, H.J., Elgaaly, M., Davids, W., Krishnasamy, S, and Kempner, L. (1991). “Testing Component Strength for Reliability-Based Design.” Sixth International Conference on Applications of Statistics and Probability in Civil Engineering, Mexico City, Mexico, June.

Conference Presentations and Abstracts

Davids, W.G., Landis, E.N., Desjarlais, J. and Riker, C. (2004). “Mixed Mode Fracture of Wood-FRP Bonds.” Presented at the Forest Products Society 58^th Annual Meeting, Grand Rapids, MI, June 27-30.

Dagher, H.J., Lopez-Anido, R.A, Davids, W.G., and Lindyberg, R. (2004). “AASHTO Specification for FRP Glulams.” Presented at the Forest Products Society 58^th Annual Meeting, Grand Rapids, MI, June 27-30.

Vasic, S., Smith, I., Landis, E., Davids, W. and Chen, Z. (2004). “Numerical Simulations of Fracture Mode I Thickness Effect in Wood.” Presented at The Eighth International Conference on Computer Aided Assessment and Control in Damage and Fracture Mechanics, March 31- April 2, 2004, Crete, Greece.

Blake, S., Davids, W.G., Landis, E.N. (2003). “Towards Bridging Length Scales in Wood.” Presented at the Technical Conference on Mechanics of Biological and Biologically Inspired Materials and Systems, Society for Experimental Mechanics, Springfield, MA, October 2-3.

Winn, J., Nagy, E., Peterson, M.L., Landis, E.N. and Davids, W.G. (2003). “The Mechanics of Seismonastic Movements in Sensitive Mimosa (Mimosa Pudica).” Presented at the Technical Conference on Mechanics of Biological and Biologically Inspired Materials and Systems, Society for Experimental Mechanics, Springfield, MA, October 2-3.

DeLano, J., Sandford, T. and Davids, W. (2003). “Design and Construction of Pile-Supported Integral Abutment Bridges at Bridge Sites with Shallow Bedrock.” Presented at the 44^th Annual Meeting of the Northeast States Geotechnical Engineers, Burlington, VT, Sept. 22-23.

Davids, W.G., Wang, Z., Turkiyyah, G., Mahoney, J. and Bush, D. (2003). “3D Finite Element Analysis of Jointed Plain Concrete Pavement with EverFE2.2.” Presented at the 82^nd Annual Meeting of the Transportation Research Board, Washington, D.C., Jan. 12-16.

Davids, W.G., Dagher, H.J. and Weaver, C. (2002). “Large-Scale Testing and Analysis of FRP-Glulam Beams with Partially Composite Concrete Decks.” Presented at the Forest Products Society 56^th Annual Meeting, Madison, WI, June 23-26.

Dagher, H.J., Davids, W., Cassidy, E. and Gardner, D. (2001). “FRP Reinforcement of Wood Panel Products for Improved Disaster Resistance.” Presented at the 3^rd Annual Conference on Durability and Disaster Mitigation in Wood-Frame Housing, Madison, WI, Nov. 2001.

Davids, W.G. (2000). “3D Finite Element Study on Load Transfer at Doweled Joints in Flat and Curled Rigid Pavements.” Presented at The Second International Symposium on 3D Finite Element for Pavement Analysis, Design, and Research, Charleston, WV, October 11-13.

Davids, W.G. (2000). “Foundation Modeling for Jointed Rigid Pavements.” Presented at the 79^th Annual Meeting of the Transportation Research Board, Washington, D.C., January 2000.

Davids, W.G., Dagher, H.J. and Breton, J. (1999). “Modeling Creep Behavior in FRP Reinforced Laminated Beams.” Presented at the First International Conference on Advanced Engineered Wood Composites, Bar Harbor, ME, July 1999.

Davids, W.G. and Mahoney, Joe (1999). “Experimental Verification of Rigid Pavement Joint Load Transfer Modeling with EverFE.” Presented at the 78^th Annual Meeting of the Transportation Research Board, Washington, D.C., January 1999.

Davids, W.G., Turkiyyah, G.M., and Mahoney, Joe (1998). “EverFE – Rigid Pavement Finite Element Analysis Tool.” Presented at the 77^th Annual Meeting of the Transportation Research Board, Washington, D.C., January 1998.

Miscellaneous Presentations

“Lattice Models for Predicting Load-Induced Fracture in Wood.” Presented at the University of New Brunswick, Fredericton, N.B., May 3, 2004 with E.N. Landis (invited).

“3D Finite Element Modeling of Jointed Plain Concrete Pavement using EverFE2.22.” Presented at the July 2003 meeting of the CalTrans-UC Davis mechanistic-empirical pavement research and design group, Davis, CA, July 28-29, 2003.

“Fiber Reinforced Polymer-Glulam Girder Testing Program to Develop AASHTO Designs.” Presented by W. Davids at the ASCE Structures Congress 2003: Engineering Smarter. Seattle, WA, May 29-31. Paper authors: Dagher, H.J. and Lindyberg, R.

“EverFE2.21: Features, Details, and Demonstration.” Presented at the April 2003 meeting of the CalTrans-UC Davis mechanistic-empirical pavement research and design group, Davis, CA, Apr. 1, 2003.

“FRP-Glulam-Concrete Bridge in Fairfield, Maine.” Presented at the ASCE Maine Section Meeting, Augusta, ME, Feb. 20, 2003.

“EverFE: Features, Practical Implementation, and Details.” Presented at the 2002 meeting of the CalTrans-UC Berkeley mechanistic-empirical pavement research and design group, Richmond, CA, Mar. 2002.

“Ongoing Development of EverFlex.” Presented at the 2001 meeting of the CalTrans-UC Berkeley mechanistic-empirical pavement research and design group, Richmond, CA, Jan. 2001.

Technical Reports

Davids, W.G., Botting, J.K. (2004). “Design, Fabrication and Preliminary Testing of a Composite Reinforced Timber Guardrail.” Final report prepared for the New England Transportation Consortium, Report No. NETCR39.

Davids, B. (2003). “EverFE Theory Manual.” www.civil.umaine.edu/EverFE/theory_manual.pdf.

Dagher, H.J, Iqbal, M. A., Lindyberg, R, Gardner, D., Davids, W. (2003). “Naval Advanced Wood Composites: Materials and Section Mechanics.” Final Report prepared for the Office of Naval Research under Contract No. N00014-00-C-0488, October 2003.

Dagher, H.J., Davids, W. and Martin, K. (2003). “Performance of Innovative Engineered Wood Composite Panels for Disaster-Resistant Housing: Phase II.” Progress report to the National Institute of Standards and Technology, June 30, 2003.

Dagher, H.J., Davids, B. and Cassidy, E. (2002). “Performance of Innovative Engineered Wood Composite Panels for Disaster-Resistant Housing.” Progress report to the National Institute of Standards and Technology, July 30, 2002.

Davids, W.G. (2000). “Modeling Response of FRP-Reinforced Glulam-Concrete Beams with Partial Composite Action.” AEWC Research Report No. 00-06, Advanced Engineered Wood Composites Center, University of Maine, Orono, ME.

Davids, B. (2000). “Crashworthiness Evaluation of the As-Built Steel Post and Beam Bridge Rail on the Bath-Woolwich Bridge.” Prepared for the Maine Department of Transportation, April 6, 2000.

Turkiyyah, G., Wu, H., and Davids, B. (1999). “Progress Report on the Parallel Implementation of 3D Finite Element Rigid Pavement Simulations.” Report to the Army Corps of Engineers Waterways Experiment Station (WES), Department of Civil and Environmental Engineering, University of Washington, Seattle, WA.

Davids, W.G., Turkiyyah, G.M., and Mahoney, Joe (1998). “Modeling of Rigid Pavements: Joint Shear Transfer Mechanisms and Finite Element Solution Strategies.” Research Report WA-RD 455.1, Washington State Department of Transportation.

Dagher, H., Elgaaly, M., and Davids, W. (1991). “Statistical Strength Properties for Steel Angle Struts.” Report to Bonneville Power Administration, Dept. of Civil Engineering, University of Maine, Orono, ME.

Teaching and Educational Activities

University Courses Taught and Average Teaching Performance

*Averages weighted by number of respondents; scale ranges from 1 (excellent) to 5 (poor)

Graduate Student Committees Chaired and Post-Doctoral Researcher Supervised

Carmen Cherry, Ph.D. student, Dept. of Civil and Environmental Engineering, U. Maine (co-Chair)

Christopher Lyons, M.S. student, Dept. of Civil and Environmental Engineering (co-Chair)

Edwin Nagy, Ph.D. student, Dept. of Civil and Environmental Engineering, U. Maine (co-Chair)

John Delano, M.S. (2004), Dept. of Civil and Environmental Engineering, U. Maine (co-Chair)

Keith Martin, M.S. (2004), Dept. of Civil and Environmental Engineering, U. Maine (co-Chair)

Josh Botting, M.S. (2003), Dept. of Mechanical Engineering, U. Maine (Chair)

Matthew Richie, M.S. (2003), Dept. of Civil and Environmental Engineering, U. Maine (Chair)

Eric Cassidy, M.S. (2002), Dept. of Civil and Environmental Engineering, U. Maine (Chair)

Zhongmu Wang, Post-Doctoral Research Associate (2001–2002), U. Maine (Supervised for 15 mos.)

Craig Weaver, M.S. (2002), Dept. of Civil and Environmental Engineering, U. Maine (co-Chair)

Aaron Bremer, M.E. (2001), Dept. of Civil and Environmental Engineering, U. Maine (co-Chair)

Chris Gamache, M.S. (2001), Dept. of Civil and Environmental Engineering, U. Maine (Chair)

Wang Jia, M.S. (2001), Dept. of Civil and Environmental Engineering, U. Maine (Chair)

Graduate Student Committee Service

Yi Bian, Ph.D. student, Dept. of Civil and Environmental Engineering, U. California-Davis

Matthew Dura, M.S. student, Dept. of Civil and Environmental Engineering, U. Maine

Andrew Goupee, M.S. student, Dept. of Mechanical Engineering, U. Maine

Rastislav Lagana, Ph.D. (2004), Dept. of Forest Resources, U. Maine

Anish Senan, M.S. (2003), Dept. of Mechanical Engineering, U. Maine

Melanie Bragdon, M.S. (2002), Dept. of Civil and Environmental Engineering, U. Maine

John Merrifield, M.S. (2002), Dept. of Civil and Environmental Engineering, U. Maine

Perrine Parrod, M.S. (2002), Dept. of Civil and Environmental Engineering, U. Maine

Olivia Sanchez, M.S. (2002), Dept. of Civil and Environmental Engineering, U. Maine

Wei Lu, M.S. (2001), Dept. of Civil and Environmental Engineering, U. Maine

Hongyu Wu, Ph.D. (2001), Dept. of Civil and Environmental Engineering, U. Washington

Han Xu, M.S. (2001), Dept. of Civil and Environmental Engineering, U. Maine

Bob Lindyberg, Ph.D. (2000), Dept. of Civil and Environmental Engineering, U. Maine

Johanna Riley-Evans, M.S. (2000), Dept. of Civil and Environmental Engineering, U. Maine

Joey Breton, M.S. (1999), Dept. of Civil and Environmental Engineering, U. Maine

Short Course Delivered

Use of EverFE for Rigid Pavement Finite-Element Analysis. One-day course emphasizing both the hands-on use of and theory underlying the EverFE software. Presented to CalTrans Pavement Engineers in Sacramento, CA on March 11, 2004.

Miscellaneous Student Activities and Advising

Faculty Advisor for AISC Steel Bridge Competition (1999, 2000, 2003, 2004). Advised students regarding design and construction of their steel bridge, traveled with students to the competition.

Pulp and Paper Foundation Undergraduates (2003). Worked with group of 6 high-school juniors interested in Civil Engineering. Over a 3-day period, designed and conducted a hands-on testing program that demonstrated basic concepts of beam bending using 2x4 wood framing members.

Externally Funded Research Grants

Effect of Processing Parameters on Reliability of VARTM/SCRIMP Composite Panels – Phase II

Investigator(s): H. Dagher (PI), R. Lopez-Anido, E. Landis, W. Davids

Supported by: Office of Naval Research

Amount: $1,570,000

Period: 4/04 – 3/07

Monitoring Pile-Supported Integral Abutment on Shallow Bedrock

Investigator(s): T. Sandford (co-PI), W. Davids (co-PI)

Supported by: The Maine Dept. of Transportation

Amount: $125,000

Period: 1/04 – 12/05

A Fiber-Based Approach for Connecting Wood Structure to Mechanical Properties

Investigator(s): E. Landis (co-PI), W. Davids (co-PI)

Supported by: USDA NRICGP – Improved Utilization of Wood and Wood Fiber Program

Amount: $140,000

Period: 9/03 – 8/05

Structural Control of Cellular Solids

Investigator(s): E. Landis (PI), W. Davids (co-PI), M. Peterson (co-PI)

Supported by: NASA

Amount: $120,000

Period: 2/03 – 2/06

Development And Commercialization of Advanced Wood-Based Composites in Maine

Investigator(s): H. Dagher (PI), W. Davids, H. Almquist, J. Ward

Supported by: The National Science Foundation

Amount: $575,543

Period: 1/02 – 12/04

Development of Finite Element Software for Rigid Pavement Analysis and Design

Investigator(s): W. Davids (PI)

Supported by: CalTrans (the California Dept. of Transportation)

Amount: $84,518

Period: 9/01 – 11/02

Design and Construction of Pile-Supported Integral Abutments at Bridge Sites with Shallow Bedrock

Investigator(s): T. Sandford (co-PI), W. Davids (co-PI)

Supported by: The Maine Dept. of Transportation

Amount: $64,968

Period: 9/01 – 8/03

Performance of Innovative Engineered Wood Composite Panels for Disaster-Resistant Housing

Investigator(s): H. Dagher (PI), W. Davids (co-PI)

Supported by: The National Institute of Standards and Technology

Amount: $153,430

Period: 8/01 – 8/03

Design, Fabrication and Preliminary Testing of a Composite Reinforced Timber Guardrail

Investigator(s): W. Davids, (PI), H. Dagher (co-PI)

Supported by: The New England Transportation Consortium

Amount: $83,469

Period: 5/01 – 5/03

Navy Composites 2: Task 3, Section Design

Investigator(s): H. Dagher (PI), R. Lindyberg (co-PI), W. Davids (co-PI), C. Valle (co-PI)

Supported by: The US Navy Office of Naval Research

Amount: $322,895

Period: 5/01 – 5/03

Optimized FRP-Reinforced OSB Panels for Disaster-resistant Construction

Investigator(s): W. Davids (PI), H. Dagher (co-PI), D. Gardner (co-PI)

Supported by: The National Science Foundation

Amount: $ 148,654

Period: 10/00 – 9/03

FRP-Glulam with Concrete Composite Deck for the Fairfield Industrial Park

Investigator(s): H. Dagher (PI), W. Davids (co-PI)

Supported by: The Federal Highway Administration IBRC Program

Amount: $350,000

Period: 3/00 – 2/04

Evaluate the Durability of GFRP-Glulam Girders through Full-Scale Testing and Modeling

Investigator(s): W. Davids (PI), H. Dagher (co-PI)

Supported by: The Federal Highway Administration

Amount: $393,455

Period: 9/00 – 9/05

Feasibility of PMC-Reinforced OSB Shear Walls

Investigator(s): H. Dagher (PI), W. Davids (co-PI), S. Shaler (co-PI)

Supported by: United States Department of Agriculture

Amount: $114,215

Period: 9/99 – 9/02

Enhancements to the EverFE Finite Element Program

Investigator(s): W. Davids (PI)

Supported by: The Washington State Dept. of Transportation

Amount: $52,223

Period: 9/99 – 2/01

Professional Service and Reviews

·         Organized and moderated session entitled “Mechanics of Rigid Pavements” at the 2003 ASCE Engineering Mechanics Conference, Seattle WA, July 16-18.

·         ASCE Timber Bridge Committee Member (2002-2005)

·         Reviewed papers for the following journals: Forest Products Journal (3), International Journal of Fracture (1), International Journal of Geomechanics (2), Journal of Engineering Mechanics (2), Journal of Structural Engineering (4), Journal of Transportation Engineering (2), Materials Research (1), Transportation Research Record (8), Wood and Fiber Science (3)

·         Proposal reviewer and panelist for the NSF-MRI program (2/04)

·         Proposal reviewer and panelist for the USDA NRI Improved Utilization of Wood program (7/04)

Consulting Activities

Niagra County Public Works (4/2004): Performed flexural analyses of a unique transversely post-tensioned, composite concrete-glulam-FRP bridge. The analyses utilized specific expertise and modeling techniques developed by UMaine researchers regarding the short-term strength and flexural fatigue response of composite concrete-glulam-FRP bridges (see Davids 2001 and Weaver et al. 2004).

Engineered Materials of Maine (8/2003): Performed statistical strength analysis of vertically laminated hardwood crane mats, and advised EMM engineering staff on physical testing program and product development.

California Department of Transportation (7/2003-3/2004): Provided expert advice on the 3D finite-element analysis of concrete pavements. Developed context-sensitive integrated help files and a theory manual for the EverFE software that overviews methods and assumptions underlying EverFE’s 3D finite-element analyses. Presented a short course on the use of the EverFE software to engineers in Sacramento, CA in March 2004.

Kleinschmidt Energy and Water Resource Consultants (12/2001). Provided assistance in the 3D finite-element analysis of an arch dam in Morrisville, VT to evaluate stability and sliding safety, in support of submission of dam safety report to the Federal Energy Regulatory Commission.

California Department of Transportation (1/2001): Provided expert advice to the California Department of Transportation on analysis methods for concrete pavements during their initial development of mechanistic-empirical pavement design procedures.

Kleinschmidt Energy and Water Resource Consultants (6/2000). Performed 2D finite-element analyses of the Leesville, PA dam to evaluate stability and rock-anchor requirements in support of submission of dam safety report to the Federal Energy Regulatory Commission.

Maine Department of Transportation (4/2000): Evaluated the safety of construction changes in the railing used on the concrete-segmental Bath-Woolwich bridge in Bath, Maine. The analysis indicated that no changes were necessary, and eliminated the need for additional costly crash testing of the as-built rail.

Updated November 11, 2004