Robert Mullen Ph.D., P.E. Frank H. Neff Professor and Chair of Civil Engineering, CWRU  Office: 206 Bingham  Phone: (216) 368-2423  FAX: (216) 368-5229  Email: rlm@po.cwru.edu

Primary Research Interests

• Computational Mechanics
• Finite Elements
• Boundary Elements
• Biomechanics
• Modeling Micro Electrical Mechanical Systems

• Critical Issues in the Application of Interval Methods to Finite Element Analysis - Presentation at SCAN 2002, Paris, FRANCE, September 23-27, 2002
• Information Content, Finite Element Analysis, and Interval Methods - Presentation at SIAM Workshop on Validated Computing, Toronto CANADA, May 23, 2002
• Uncertainty Treatment in Mechanics:An Interval Finite Element Approach- Department of Mechanical and Aerospace Engineering CWRU, February 15, 2002
• The pace of innovation, technology diffusion, and the evolution of fracture treatment - AO Board of Trustees Meeting June 2001

• Interval Finite Element Methods

 
• Measurement and Modeling of Thermomechanical Behavior of Shape Memory Alloys with Emphasis on Thin Films

 
• Fracture and Fatigue of Micro Electromechanical Systems

 
• Stress Chromic Polymeric Coatings for Visual Detection of Over stress Condition

 
• Development of Optimal Concrete Sealant Techniques

 
• Theoretical Modeling of Micro electromechanical Systems

 
• Transient Finite Element Analysis of Non-linear Piezoelectric Material

 
•  Biomechanics of the Human Mandible and Mid-Face

 
• Video Analysis of Pavement

Affiliated Laboratories and Centers

• Computer Aided Analysis Laboratory
• Co-director, Center for Reliable Engineering Computations

NORTHWESTERN UNIVERSITY
 Doctor of Philosophy (Ph.D.) Applied Mechanics, 1981
 Ted Belytschko, Advisor
 Thesis title: Numerical Methods for the Analysis of Fluid-Solid Interaction Problems.

 UNIVERSITY OF ILLINOIS AT CHICAGO CIRCLE
 Master of Science (M.S.) Structural Mechanics, 1977
 Bachelor of Science (B.S.) Structural Engineering, 1976

Elected Fellow, ASCE, 2000.

Jeffcott Award for best paper on Rotating Machinery Dynamics, 11th Biennial ASME Design Engineering Division Conference on Mechanical Vibration and Noise, 1987.

ASCE Award for Outstanding Service, 1986.

Pre-doctoral Visiting Appointment at Institute for Computer Applications in Science and Engineering NASA Langley Research Center, 1980.

Registered Professional Engineer - State of Ohio #E-46847

• Frank H. Neff Professor of Civil Engineering,  July 2002 -present
• Chair, Department of Civil Engineering,  January 1999-present
• Professor of Civil Engineering, Secondary appointment of Professor in Mechanical and Aerospace Engineering, Case Western Reserve University,1994-present
• Associate Professor of Civil Engineering, Case Western Reserve University,  1985-1994
• Acting Associate Director, Case Center for Adhesives, Sealants, and Coatings,1986-1988
• Faculty Fellow NASA-Lewis Research Center,1982-1983
• Assistant Professor of Civil Engineering, Case Western Reserve University,1980-1985

Patents

• R. L. Mullen, M. and G. Welsch "Method of Forming Closed Cell Metal Composites", US Patent 5,890,258, April 6, 1999.

• M. Mehregany, R. Rudderman, and R. L. Mullen, "Microfabricated Blades", US Patent 5,579,583, December 3, 1996.

Journal Papers

• H. Kahn, N. Tayebi, R. Ballarini, R.L. Mullen and A.H. Heuer, "FractureToughness of Polysilicon MEMS Devices," Sensors and Actuators, 82, pp. 274-280, 2000.

• H. Kahn, N. Tayebi, R. Ballarini, R.L. Mullen and A.H. Heuer, "Fracture Toughness ofMicrofabricated Polysilicon Fracture Mechanics Specimens," Proceedings of the Royal Society of London, A 455, pp. 3807-3823, 1999.

• R. Ballarini, R.L. Mullen and A.H.Heuer, "The Effects of Heterogeneity and Anisotropy on theSize Effect in Cracked Polycrystalline Films," International Journal of Fracture, Special Issue Fracture Scaling, Vol. 95, No. 1-4, pp. 19-39, 1999.

 
• Muhanna, R. L. and Mullen, R. L., "Formulation of Fuzzy Finite Element Methods for Mechanics Problems",Computer-Aided Civil and Infrastructure Engineering, 14, pp. 107-117, 1999.

• Mullen, R. L. and Muhanna, R. L. "Bounds of Structural Response for All Possible Bounds of structural response for all possible loading combinations",Journal of Structural Engineering v. 125 no1 (January) p. 98-106, 1999.
• Muhanna, R., Ballarini, R., and Mullen, R., "Calculation of Stress Intensity Factors with Fuzzy Loading", Stochastic Sturcural Dynamics, Spencer &Johnson (eds.), Balkema, pp. 165-168, 1999.

 
• R. Kayacan, R. Ballarini and R.L. Mullen, "The Effects of Tooth and Implant Mobility on Occlusal Force Transmission in Tooth/Implant Supported Prostheses," The Journal of Prosthetic Dentistry, Vol. 78, No. 4, pp. 391-399, October 1997.
• R.L. Mullen, R. Ballarini and Y.Yin, "Monte-Carlo Simulation of Effective Elastic Constants of Polycrystalline Thin Films," Acta Metallurgica et Materialia, Vol. 45, No. 6, pp. 2247-2255, 1997.
• R. Ballarini, R.L. Mullen, Y. Yin, A. Kahn, S. Stemmer and A.H. Heuer, "The Fracture Toughness of Polycrystalline Silicon Microdevices: A First Report," Journal of Materials Research, Vol. 12, No. 4, pp. 915-922, 1997.
• R. Kayacan, R. Ballarini, R.L. Mullen and R.R. Wang, "Effects of Attachment Clips on Occlusal Force Transmission in Removable Implant-Supported Overdentures and Cantilevered Superstructures," International Journal of Oral and Maxillofacial Implants, Vol. 12, No. 2, pp. 228-236, 1997.
• M. Ozgur, R.L. Mullen and G. Welsch, "Analysis of Closed Cell Metal Composites", Acta Metallurgica , Vol. 44, No. 5, pp. 2115-2126, 1996.
• M. Ozgur, R.L. Mullen and G. Welsch, "Finite Element Modelling of Internally Pressurized Closed Cell Composites", International Journal for Numerical Methods in Engineering, Vol. 39, pp. 3715-3730, 1996.
• Hannes Kessler, Roberto Ballarini, Robert L. Mullen, Liisa T. Kuhn, Arthur H. Heur, "A Biomimetic Example of Brittle Toughening: (I) Steady State Multiple Cracking, Computational Materials Science, Vol. 5, pp. 157-166, 1996. Correction: Vol 6, pp 353-355, 1996.

•  Fracture Mechanics on the Micron Scale, Second Euroconference and International Symposium, Material Instabilities in Deformation and Fracture", Aristotle University of  Thessaloniki, Thessaloniki, Greece, Aug. 31-Sept. 4, 1997
• Interval Based Finite Element , 4-th International Conference on Numerical Methods and Applications, Bulgarian Academy of Sciences, Sofia, Bulgaria, Aug. 19-23, 1998.

• Chu, Z., Mullen, R.L., and Ballarini, R., "Statistical Properties of Elastic Moduli of Polycrystalline Materials Using a Johnson-Mehl Model, Proceedings of the 18th ASCE Specialty Conference on Probablistic Mechanics and Structural Reliability,  University of Notre Dame, Notre Dame Indiana, 2000.
• Muhanna, R.L., and Mullen, R.L., Sharp Enclosure of Material Uncertainity in Solid and Structural Mechanics-Interval Based Approach, Part I, Proceedings of the 18th ASCE Specialty Conference on Probablistic Mechanics and Structural Reliability,  University of Notre Dame, Notre Dame Indiana, 2000.
• Muhanna, R.L., and Mullen, R.L., Sharp Enclosure of Material Uncertainity in Solid and Structural Mechanics-Interval Based Approach, Part II, Proceedings of the 18th ASCE Specialty Conference on Probablistic Mechanics and Structural Reliability,  University of Notre Dame, Notre Dame Indiana, 2000.
• Mullen, R.L., and Muhanna, R.,l., "Sharp Interval Estimate for Finite Element Solutions with Fuzzy Material Properties", Proceedings of the 14th ASCE Engineering Mechanics Division Conference, University of Texas at Austin, TX, May 21-24, 2000.

• Chu, Z., Mullen, R.L., and Ballarini, R., "Monti-Carlo Simulation of Elastic Properties of Polycrystalline Materials Using the Johnson-Mehl Model, Proceedings of the 14th ASCE Engineering Mechanics Division Conference, University of Texas at Austin, TX, May 21-24, 2000.
• Rafi L. Muhanna and Robert Mullen,"Interval Methods for Load and Stiffness Uncertainty in Computer Aided Analysis", 2000 NSF Design and Manufacturing Converence, Vancouver, British Columbia, Canada, January 3-6, 2000.
• Mullen, R.L., and Muhanna, R.,l., "Interval-Based Geometric and Material Uncertainty for Mechanics Problems", Proccdins of the 13th ASCE Engineering Mechanics Division Conference, The Johns Hopkins University, Bltimore, MD, June 13-16, 1999
• The 4th Internatinoal Converence on Stochastic Sturctural Dynamics, The University of Notre Damen, Notre Dame, IN August 6-8, 1998.
• Muhannar, R. L. and Mullen, R. L. , "interval Based Methods for Load and Stiffness Uncertainty in Computer Aided Analysis, "Proceedings for the 1999 NSF Design and Manufactureing Grantess Conference, Long Beach,, CA, January 5-8, 1999.

 
• Rafi L. Muhanna and Robert L. Mullen, "Interval based Methods for Uncertainty in Computer Aided Analysis", 1998 NSF Design and Manufacturing Grantees Conference, Monterrey, Mexico. January 5 - 8, 1998
• R. L. Mullen, R. Ballarini, and A. Heuer, "Fracture Energy and Elastic Constants of Polycrystalline Silicon Thin Films for Microelectromechanical Systems (MEMS) ",1997NSF Design and Manufacturing Grantees Conference, Seatle, Washington,Monterrey, Mexico. January 7 - 10, 1997
• R.L. Mullen, R. Ballarini, A.H. Heuer and Y.Yin, "Material Failure Analysis of Microelectromechanical Systems (MEMS), Proceedings of the 1996 National Science Foundation Design and Manufacturing Grantees Conference, University of New Mexico, January 2-5, 1996, pp. 227-228.
• R. Ballarini, R.L. Mullen, Y. Yin and A.H. Heuer, "An Analytical and Experimental Study of Fracture of Microelectromechanical Systems", 11th Engineering Mechanics Conference, ASCE, Fort Lauderdale, FL may 19-22, 1996.

• American Society of Civil Engineers (ASCE) - Fellow, 2000, Member 1987 to 2000, Associate Member 1981 to 1987, (Student Member 1974 to 1980).
• American Academy of Mechanics (AAM) - Member 1981 to present.
• American Society of Mechanical Engineers (ASME) - Member 1983 to present.
• Cleveland Society for Coatings Technology (CSCT) - Member 1987 to1992.
• Federation of Societies for Coatings Technology (FSCT) - Member 1987 to 1992.

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