Herman F. Nied
Email: hfn2@lehigh.edu
Phone: (610) 758-4128
Fax: (610) 758-6224
Professor
Department of Mechanical Engineering and Mechanics
Appointed to Lehigh Faculty: 1995
Education:
Ph.D. Applied Mechanics, Lehigh University, 1981
M.S. Applied Mechanics, Lehigh University, 1978
B.S. Mechanical Engineering, University of Rochester, 1976
Related experience - teaching, industrial, etc.:
Visiting Research Scientist – GE Global Research Center, Sumer 2011
Chairman, Mechanical Engineering and Mechanics, Lehigh University, 2002-2008
Manager - Grinding Technology, Norton Company, 1993-94
Research Engineer, General Electric Corporate Research and Development Center, 1981-93
Research activities, consulting, patents, etc.:
Active areas of research include polymer processing, flexible composites, fracture mechanics, electronic packaging, MEMS, shock and vibration loading, and welding. Development of advanced numerical methods with an emphasis on specialized finite element codes for processing simulation and 3-D fracture analysis. Technical consultant to over ten companies and liability expert witness. Eleven U.S. patents and three European patents.
Scientific and professional societies of which a member:
American Society of Mechanical Engineering
American Academy of Mechanics
Polymer Processing Society
Sigma Xi
Honors and awards:
Keynote Presentation, "Mechanical Properties of Knitted- fiber Reinforced Elastomeric Composites," 26th Annual Meeting, Polymer Processing Society, Banff, Canada, 2010
Keynote Invited Paper, “Stress and Fracture Analysis for Welded Plate Girders in Bridge Structures,” HMSME 2007, Nanjing, China (2007)
Keynote Address, “Simulation of Laser Welding and LENS Fabrication Processes,” ESAFORM 2006, Heat Transfer Modeling in Material Forming Processes Symposium, Glasgow, UK, (2006)
Fellow ASME, 2005
MMRI Distinguished Lecturer, McMaster University, 2004
ASME Curriculum Innovation Award Honorable Mention (with J. Coulter), 2001
Keynote Address, 17th Annual Meeting, Polymer Processing Society, Montreal, Blow Molding and Thermoforming Symposia, 2001
Pi Tau Sigma Mechanical Engineering Teacher of the Year Award, 2000
Keynote Speaker, Gordon Conference, CAE in Polymer Processing, 1999
Sigma Xi National Honor Society, 1998
NSF CAREER Award, 1997
GE IN706/7F Gas Turbine Recovery Program Award, 1992
Dushman Award, GE Corporate Research Center, 1990
GE Silver Patent Medallion, 1990
GE Engineering Systems Lab Refereed Publications Award, 1984
Recent Ph.D. and M.S. Dissertation and/or Projects Supervised:
(contact the department for a copy)
2012 – Pornsak Thasanaraphan, PhD Dissertation, "A Study on the Welding Characteristics of Tailor Welded Blank Metal Sheets Using Laser and GTAW Welding"
2012 – Guosong Zeng, MS Thesis, "Thermal Effect on Restoring Force and Dielectric Charge Density of RF MEMS Switch"
2011 – Bora Baloglu, PhD Dissertation, "Finite Element Modeling of High Current Density Effects & Power Handling Capability of RF MEMS Capacitive Switches"
2011 – Zhive Li, MS Thesis, "Three-Dimensional Welded Structures Fracture Problems using Enriched Finite Elements"
2011 – Zi Wang, MS Thesis, "Knitted Fabric Reinforced Thermoplastic in Thermoforming"
2010 – Burak Bekisli, PhD Dissertation, "Analysis of Knitted Fabric Reinforced Flexible Composites and Applications in Thermoforming"
2010 – Xiao Liu, MS Thesis, "Development of an Enriched Finite Element Model for Cracks Terminating at Bi-Material Interfaces"
2010 – Alp Evren, MS Thesis, "Viscoelastic Modeling and Simulation of Electrostatically Actuated RF MEMS Switches"
2010 - Bon Koo, MS Thesis, "Multi-pass Welding Behavior of Austenitic and Martensitic Stainless Steels using SYSWELD"
2009 - Chunyuan Cai, MS Thesis, “Thermoforming Knitted Fabric Reinforced Composites,”
2009 - Bo Han, MS Thesis, “Development of Three-Dimensional Enriched Crack Tip Finite Element for Linear Poroelastic Materials”
2009 - Jermy Payne, MS Thesis, “Finite Element Modeling of Fluid Flow and Heat Transfer in the Weld Pool of CMSX-4 Nickel Based Superalloy”
2009 - Murat Saribay, PhD Dissertation, “Three-Dimensional Elastic-Plastic Dynamic Fracture Analysis for Stationary Cracks Using Enriched Elements”
2009 - Jonathan Marmillo, MS Thesis, “Persistence of Defects During Class-A Sheet Thermoforming of Thermoplastic Olefins”
2008 - Bora Baloglu, MS Thesis, “Electro-Mechanical Modeling and Simulation of RF MEMS Switches”
2008 – Cumali Semetay, PhD Dissertation, “Laser Engineered Net Shaping (LENS) Modeling Using Welding Simulation Concepts”
2008 - Bora Baloglu, MS Thesis, "Electro-Mechanical Modeling and Sumulation of RF MEMS Switches"
2007 - Cumali Semetay, PhD Thesis, "Laser Engineered Net Shaping (LENS) Modeling Using Welding Simulation Concepts"
2007 - Nicholas Maiorino, MS Thesis, “Analysis of Surfaces Created from Two Aluminum Pigments Varying in Particle Size and Processing Time Using Roughness Parameters, Autocorrelation and Power Spectrum Density”
2007 - Erman Cititrik, PhD Dissertation, “Elastic-Plastic Characterization of Crracks on Ductile Bimaterial Interfaces”
2006 – Timothy Dale, MS Thesis, “Application of Linear Poroelasticity to Model the Mechanical Behavior of Low Dielectric Materials”
2006 – Daniel Mercier, PhD Dissertation, “Finite Element Simulation of Thick Sheet Thermoforming”
2006 – Umit Ozkan, PhD Dissertation, “Three-Dimensional Contact Fracture Problems Using Enriched Finite Elements”
2006 - Adreanne Kelly, MS Thesis, “Cooling Solution for High Power Central Prcessing Multi-Chip Modules using Precision Gap Technology”
2006 - Timothy Dale, MS Thesis, "Application of Linear Poroelasticity to Model the Mechanical Behavior of Low Dielectric Materials"
2006 - Daniel Mercier, PhD Thesis, "Finite Element Simulation of Thick Sheet Thermoforming"
2006 - Umit Ozkan, PhD Thesis, "Three-Dimensional Contact Fracture Problems Using Enriched Finite Elements"
2005 - Xiaoxian Hu, PhD Thesis, "Finite Element Analysis of the Three-Dimensional Stress Sate at Bi-Material Edges and Corners"
2005 - Murat Saribay, MS Thesis, "Dynamic Stress Intensity Factors for Cracks Using the Enriched Finite Element Method"
2005 - Matthew Tomik, MS Thesis, "Investigation of Residual Stress and Distortion due to Phase Transformations in LENS Using Finite Element Analysis"
2005 – Xiaoxian Hu, PhD Dissertatioin, “Finite Element Analysis of the Three-Dimensional Stress State at Bi-Material Edges and Corners”
2005 – Murat Saribay, MS Thesis, “Dynamic Stress Intensity Factors for Cracks Using the Enriched Finite Element Method”
2005 – Matthew Tomik, MS Thesis, “Investigation of Residual Stress and Distortion due to Phase Transformations in LENS Using Finite Element Analysis”
2004 – Mehmet Sahin, PhD Dissertation, “Buckling and Postbuckling Behavior of Cracked Structures”
2004 – Dong-Jin Kim, MS Thesis, “Welding Simulation of Ship Structures Using Coupled Shell and Solid Volume Finite Elements”
2004 – Alexander F. Herr, MS Thesis, “Automated Simulation of 3-D Crack Propagation on Bimaterial Interfaces in Semiconductor Packages”
2004 - Mehmet Sahin, PhD Thesis, "Buckling and Postuckling Behavior of Cracked Structures"
2003 - Erman Citirik, MS Thesis, "3-D Fracture Analysis of Circumferentially Cracked Weld Overlay Coatings"
2003 - Umit Ozkan, MS Thesis, "Stress Intensity Factors for Cracks in Anisotropic Materials Using Enriched Finite Elements"
2003 - Dongjin Kim, MS Thesis, "Welding Simulation of Ship Structures Using Coupled Shell and Solid Volume Finite Elements"
2003 - Alexander F. Herr, MS Thesis, "Automated Simulation of 3-D Crack Propagation on Bimaterial Interfaces in Semiconductor Packages"
2003 – Erman Citirik, MS Thesis, “3-D Fracture Analysis of Circumferentially Cracked Weld Overlay Coatings”
2003 – Umit Ozkan, MS Thesis, “Stress Intensity Factors for Cracks in Anisotropic Materials Using Enriched Finite Elements”
2003 - Aaron Mengel, MS Thesis, “Finite Element Modeling of LENS Deposition Using SYSWELD”
2002 - Anqing Xu, PhD Dissertation, “Finite Element Analysis of Three-Dimensional Corner Stress Singularities and Its Application in Microelectronics Packaging”
2001 - Marc Heffes, MS Thesis, “Interfacial Cracking in Flip Chip Packages with Viscoplastic Solder Deformation”
2000 - Ali Ayhan, PhD Dissertation, “Finite Element Analysis of Nonlinear Deformation Mechanisms in Semiconductor Packages”
2000 - Bora Yildirim, PhD Dissertation, “Nonlinear Thermal Stress/Fracture Analysis of Multilayer Structures Using Enriched Finite Elements”
1999 - Chao-Hsin Wang, PhD Dissertation, “Numerical Simulation of Thermoforming and Blow-Molding Manufacturing Processes”
1999 - Eliot Moore, MS Thesis, “Analysis of Buckling in Thin Epoxy Films Due to Thermal/Moisture Induced Stresses”
1998 - Jongwoo Park, PhD Dissertation, “Characterization of Interfacial Damage of Polymer Encapsulated Microelectronic Devices”
1998 - Scott Hummel, PhD Dissertation, “Determination of the Structural Capabilities of Thermoformed and Blow-Molded Components”
1998 – Y. Bertan Bayram, MS Thesis, “Finite Element Modeling of Interface Crack Contact Problems in Semiconductor Packages”
1998 - Christopher Coughlin, MS Thesis, “An Investigation of the Use of Recycled Plastics in Construction Applications”
1997 - Ali Ayhan, MS Thesis, “Finite Element Analysis of Semiconductor Package Debonding Due to Thermal Cycling”