Residual Stress Summit 2013

Speakers


Recommended Practices and Future Extensions

Gary Schajer teaches and does residual stress research in the Department of Mechanical Engineering, at the University of British Columbia, Vancouver, Canada. His first hole-drilling publication was recognized by the 1981 Best Paper Award of the Journal of Engineering Materials and Technology. Since then, Gary Schajer has done extensive research on residual stress measurements, and has published numerous papers and book chapters. He is a member of ASTM committee E28-13 on residual stress measurement, and has been responsible for three major revisions of ASTM E837 Standard Test Method for Hole-Drilling Residual Stress Measurements.

Ed Kingston is the Managing Director of VEQTER Ltd. He received his Masters degree and PhD from the University of Bristol, specialising in the Deep-Hole Drilling technique for his PhD. He now runs VEQTER day-to-day carrying out residual stress measurements for clients all over the world, from Japan to Europe to the USA. Although currently in a managerial role, Ed is still most interested in R&D, focusing on the improvement of residual stress measurement techniques and their application.

Michael Hill has devoted his professional career to residual stress engineering. His published works are in the areas of residual stress measurement, modeling, and failure prediction. Prof. Hill has worked extensively on the development of laser shock peening in collaboration with government and industrial partners. He founded an industrial services firm, Hill Engineering, LLC, to address the needs of commercial clients in tackling complex structural problems with a special emphasis on residual stress engineering. Prof. Hill completed his Ph.D. in Mechanical Engineering at Stanford University in 1996, having earned his B.S. and M.S. degrees in Mechanical Engineering at the University of Arizona in 1989 and 1991, respectively.

Adrian T. DeWald has focused on the measurement and modeling of residual stresses and studying their effects on the mechanical performance of materials. He has published over ten technical papers on residual stress measurement and laser peening and has presented many of these at technical conferences. Dr. DeWald received a Ph.D. from the University of California in Mechanical Engineering in 2005. Following graduation, he accepted a position as Senior Engineer at Hill Engineering, LLC, a company dedicated to solving residual stress related issues for industry.

Drew Nelson is a Professor of Mechanical Engineering at Stanford University. He conducts research in experimental stress analysis and fatigue of materials, and teaches those subjects as well as mechanical design. His industrial experience includes four years at General Electric developing structural design criteria and analyses guidelines for nuclear reactor core components and three years part-time at a company developing a new type of hydrodynamic bearing for rotating machinery.

I. Cevdet Noyan is Professor of Materials Science and Engineering at Columbia University, New York, where he works on x-ray and neutron diffraction and mechanical response of crystalline materials. Prof. Noyan served as Research Staff Member and Research Manager at the IBM Research Division, T. J. Watson Laboratory until 2004, where he conducted and directed research on chip packaging, reliability of microelectronic interconnection structures and x-ray microdiffraction. Noyan received the Adjunct Faculty Award for Excellence in Teaching from Columbia University’s School of Engineering and Applied Science in 1993. He received two IBM Outstanding Technical Achievement Awards and an IBM Research Division Award for research and development of computer and packaging structures, on which topics he is the co-author of more than twenty patents. He is co-editor of Advances in X-Ray Analysis and a Fellow of American Physical Society.

Philip Withers is a Professor at the University of Manchester, UK. His main interests lie in the application of advanced techniques to assess the structural integrity of engineering materials and components. Besides the measurement of stress, he is also interested in manipulating residual stresses to improve structural performance and life, for example using phase transformations in smart materials and weld fillers. Prof. Withers has also developed micron scale variants of the slotting and hole drilling techniques using a focused ion beam microscope and digital image correlation to measure micron scale residual stress variations in components and devices. His work spans the whole range of structural engineering materials, but especially for the nuclear and aerospace sectors. He runs the residual stress unit at Manchester and recently complemented this with the Henry Moseley X-ray Imaging Facility for 3D structure measurement. He is a member of the Royal Academy of Engineering and has been awarded numerous prizes both for research and education innovation.

Ron Rogge is a Senior Research Officer at the National Research Council of Canada, presently on Secondment to AECL, Chalk River. Since joining the neutron scattering group at Chalk River in 1993, Ron has been involved with the Applied Neutron Diffraction for Industry (ANDI) activity. Presently he is responsible for the ANDI activity at the Canadian Neutron Beam Centre and is the review coordinator of Materials Science and Engineering proposals.

Mike Prime received a Ph.D. in Mechanical Engineering from U.C. Berkeley in 1994. He has worked at Los Alamos National Laboratory as a Research and Development Engineer for over 18 years, where he has received four Distinguished Performance Awards and six Defense Program Awards of Excellence. He has worked on nonlinear vibrations, structural health monitoring, residual stress measurement, shock physics, and material failure at high strain rates. He was named an ASME Fellow in 2010, and received the A.J. Durelli award from the Society for Experimental Mechanics in 2012. In 2000, he invented and later patented the contour method for measuring residual stress, which is used worldwide.


Industrial Applications

Mark James is a Technical Program Manager at the Alcoa Technical Center near Pittsburgh, Pennsylvania. After finishing a Master's Degree in Mechanical Engineering with a focus on numerical methods, Mark spent 5 years in industry developing engineering software using the finite element method. Mark's industry experience led him to a PhD at Kansas State University focused on computation methods for elastic-plastic fracture, followed by a National Research Council Post-Doctoral Research Fellowship at NASA Langley Research Center. After an additional three years at Langley as a contractor working on fatigue and fracture projects, Mark joined Alcoa's Technical Center in 2005 where his current responsibilities include managing Alcoa's "Residual Stress Management for 3D Structures" program. Mark recently joint the aerospace group at ATC and has responsibility for a variety of programs focused on residual stress, fracture mechanics related material characterization, and customer applications. Mark is an active leader in the international standardization process via ISO TC 164/SC5 for fatigue crack growth as well as ASTM Committee E8 on Fatigue and Fracture and has particular interest in standardizing test methods to partition residual stress from property data for fracture-mechanics-based testing.


Residual Stress in Shipbuilding

Garrett Sonnenberg has been involved in product and process R&D for 20 years, developing unique products and manufacturing processes. Since 2002, Mr.Sonnenberg has worked for the Aircraft Carrier Technology Development Department of Newport News Shipbuilding to develop new manufacturing and engineering methods for aircraft carrier design and construction. A focus has been on the use of finite element analysis [FEA] software to perform manufacturing simulation to aid in product optimization, i.e., Design for Affordability. Past efforts in this field has evaluated the technology level of welding simulation software, made an industry-wide tool selection, and performed an industrial impact and cost benefit assessment. Further work in this field has lead to additional tool developments to refine the software for shipbuilder usey. Recently, these experiences have been used to improve the NNS Foundry through the use of FEA simulation tools for pattern, mold, and process optimization. He holds a Bachelors of Science in Mechanical Engineering from Boston University and a Masters of Science in Mechanical Engineering from Gannon University.

T. D. Huang is Engineering Manager, Hull Technical, Ingalls Shipbuilding, a division of Huntington Ingalls Industries, the largest naval shipbuilder in the U.S. after spin-off from Northrop Grumman Corporation in March 2011. Dr. Huang has more than 30 year experiences in the design and construction of marine and ship structures. He has pioneered numerous hull design and construction techniques for modern lightweight naval ship production. In September, 2010, Dr. Huang received the U.S. Department of Defense Value Engineering Award for Naval Surface Ship Affordability and Manufacturing Technology Program. In addition to receiving the 2007 Elmer Hann Award from SNAME, Dr. Huang was awarded the 2003 and 2005 Annual Best Paper Awards from the Technology Review Journal by Northrop Grumman in 2004 and 2006. He holds a B.S. in Civil Engineering from Chunghsing University, an M.S. in Structural Engineering from The Ohio State University and a Ph.D. in Structural Engineering from Tulane University. Dr. Huang is a registered Professional Engineer in Ohio and Louisiana and is a member of SNAME, ASCE and AWS.

Bud Brust joined Engineering Mechanics Corporation of Columbus (EMC2) five years ago as senior partner after working at Battelle Columbus for 25 years. His technical expertise includes the computational weld model development, fatigue and corrosion life prediction methods, fracture mechanics, failure investigation, damage assessment, probabilistic risk assessment, and high temperature creep damage and fracture modeling. He is a Fellow of ASME and an active member of AWS, and ASTM and a founding member of the International Society for Computational Engineering and Sciences (ISCES). He serves on several Journal editorial boards and is active in several ASME code committees. He received his M.S. from Purdue University, and Ph.D. in Computational Mechanics from Georgia Institute of Technology. Brust has more than 300 publications in refereed international journals, conference proceedings, and moderately reviewed articles and presentations. He holds three US and international patents for his developments in weld modeling and the VFTTM code.

Luke Brewer performs research in the area of physical and structural metallurgy with an emphasis on microstructure-property relationships. In particular, Prof. Brewer is studying problems related to corrosion mitigation and repair of metallic structures. He has experience with and interest in using x-rays, neutrons, and even electrons for performing diffraction-based measurements of residual stress. He has been an associate professor of mechanical and aerospace engineering at the Naval Postgraduate School since 2010. Prof. Brewer was a staff member in the computational materials science and materials characterization departments at Sandia National Laboratories (SNL) in Albuquerque, NM from 2004-1010. Prior to that, he was a technical staff member at GE Global Research Center in Niskayuna, NY. Dr. Brewer received his B.S.E, in 1996, and Ph.D., in 2001, from the Department of Materials Science and Engineering at Northwestern University.

Shannon Farrell is a Defence Scientist at Defence Research and Development Canada, an organization that provides science and technology advice and support to Canada’s Department of National Defence and the Canadian Armed Forces. He conducts research in the areas of crystallographic and magnetic characterization, non-destructive evaluation and residual stress analysis of naval steels. He has measured the stress redistribution in response to remedial maintenance and repair on Canada’s VICTORIA Class submarine pressure hulls using portable XRD. Current work includes developing magnetic Barkhausen noise analysis for evaluation of strain in parts that must return-to-service in an unaltered state.


Residual Stress Failure Case Studies and Forensics

Lyndon Edwards is the Head of the Institute of Materials Engineering at the Australian Nuclear Science and Technology Organisation (ANSTO). He has a long-standing reputation in fatigue and fracture, particularly of aerospace and nuclear materials and structures. He has authored over 200 publications and has worked on the Structural Integrity of advanced aircraft structures and both future and legacy Nuclear Plant. He was a key figure in the development of engineering stress measurement using neutron diffraction and before his move to Australia was a leader in the re-development of UK expertise in nuclear Engineering.

Mike Brauss is the President of Proto Manufacturing. He has over 25 years experience in the research, design, development and application development of X-ray diffraction (XRD) systems. With over thirty publications and multiple patents, his inventions and developments include: automated residual stress mapping; iXRD portable stress analysis system, (world’s smallest and fastest system); iXRD combo systems; and LXRD laboratory stress system and gantry robot systems. Mr. Brauss also pioneered practical field usage of XRD stress analysis, in-line production applications and fully automated applications. He also serves on the ASTM E28.13 residual stress subcommittee.

Peter McKeighan performs numerous failure analyses on all kinds of different components for end-users, insurance companies, underwriters and litigants. After receiving his PhD in Mechanical Engineering from Purdue, he taught and performed research at Bristol University in the UK for three years before heading the fatigue and fracture testing lab at Southwest Research Institute (San Antonio, TX). After fifteen years of breaking components for a living, Dr McKeighan executed a career re-direction heading to Exponent to focus on understanding why components failed. Although his practice at Exponent is focused on metals, he performs failure analyses on all flavors and types of components, including non-metallics, consumer products, industrial machinery and space/aircraft structures. In addition to his day job, Dr. McKeighan has adjunct taught at various universities in Texas and Illinois.

Mike Prime received a Ph.D. in Mechanical Engineering from U.C. Berkeley in 1994. He has worked at Los Alamos National Laboratory as a Research and Development Engineer for over 18 years, where he has received four Distinguished Performance Awards and six Defense Program Awards of Excellence. He has worked on nonlinear vibrations, structural health monitoring, residual stress measurement, shock physics, and material failure at high strain rates. He was named an ASME Fellow in 2010, and received the A.J. Durelli award from the Society for Experimental Mechanics in 2012. In 2000, he invented and later patented the contour method for measuring residual stress, which is used worldwide.


Extensions and Improvements for Diffraction Techniques

Matt Miller is a Professor of Mechanical and Aerospace Engineering at Cornell University, NY. He is interested in solid mechanics and the mechanical behavior of metals, engineering alloys, composites and semiconductors. Dr Miller's research areas include crystal stress measurements, microplasticity, fatigue crack initiation, high temperature behavior of superalloys, mechanical behavior of silicon, design and implementation of new in situ experiments with synchrotron X-rays, multiscale model development and validation. Educational areas focus on mechanics of materials, material selection, X-ray diffraction, graduate solid mechanics, mechanics of composites, experimental methods and state variable modeling.

Bjørn Clausen is a SMARTS Instrument Scientist at the LANSCE-LC facility at the Los Alamos National Laboratory, NM. He works on in-situ internal and residual strain measurements using neutron diffraction, modeling of polycrystal deformation using self-consistent models, and development of polycrystal deformation models for predicting internal and residual stresses/strains in polycrystalline materials. He has a Ph.D. in Mechanical Engineering/Materials Science from the Technical University of Denmark/ Risø National Laboratory, and postdoctoral experience at the California Institute of Technology.

Chuck Goldsmith worked for the IBM Corporation for over 40 years in various capacities. He was the leader of the diffraction laboratories of the Failure Analysis Group and has invented, designed and deployed various x-ray systems with particular applications in semiconductor manufacturing. He has recently retired from full time work and is working as a consultant.

Clayton Ruud is a Professor Emeritus at Pennsylvania State University. He continues his work in residual stress measurement as Chairman of the ASTM Subcommittee on the Residual Stress Measurement and member of the International Center for Diffraction Data. Before completing his graduate education Dr. Ruud worked for ten years in manufacturing as a metallurgist and engineer, first in basic metals and then in aerospace and heavy vehicle industries. His concern for residual stresses as a reliability issue for manufactured components has included the spontaneous fracture of castings, distortion of machined forgings, and the failure of medical devices and power plant piping. He has supervised hundreds of residual stress investigations using various types of destructive and nondestructive methods, and has authored numerous papers, patents and handbook contributions on residual stresses.

Mike Smith is the Professor of Welding Technology within the Dalton Nuclear Institute at the University of Manchester, with research interests covering the whole field of weld structural performance. He has particular expertise in the modelling and measurement of weld residual stresses, and in understanding their impact on in-service degradation and structural integrity. Prior to moving to Manchester, Mike worked for nearly 25 years in the UK civil nuclear industry as a specialist in structural integrity. His responsibilities included complex structural analyses, the preparation of structural integrity safety cases, development of the R5 and R6 assessment procedures, and leading/participating in multi-national European structural integrity research programmes.

Scott Carlson is a Research Engineer for Southwest Research Institute embedded in the USAF’s A-10 Aircraft Structural Integrity Program (ASIP) analysis group. Within that group Mr. Carlson helps to design full-strength, damage tolerant repairs for damaged aircraft in the field or depot, develops test programs for the qualification of new production tools, and assists in the determination and development of new fatigue critical locations on the A-10 aircraft. Mr. Carlson received his Master’s degree from the University of Utah and is currently working to complete his Ph.D. under the tutelage of Dr. David W. Hoeppner.

Brian Leitch has been a researcher with Atomic Energy of Canada Ltd for 30 years, working in experimental testing and modeling of delayed-hydride-cracking, fracture, creep and high stress relaxation mechanisms in as-received and irradiated reactor materials. He has been also been involved in experimental and theoretical investigations of rupturing, submerged pressurized tubes and the effect of the subsequent pressure wave on surrounding components.

Masahito Mochizuki is a Professor of Division of Materials and Manufacturing Science, Graduate School of Engineering at Osaka University, Japan. His main research interests are numerical and theoretical analyses of weld residual stress, experimental measurements of residual stress, and clarification of residual stress effects on failures such as fatigue, stress-corrosion cracking, or brittle fracture. BSc of Mechanical Engineering at Kyoto University in 1989, and PhD of Mechanical Engineering at Kyoto University in 1997. Not only university career from 1998 to present, but also 10-year industrial experience from 1989 to 1998 in Mechanical Engineering Research Laboratory, Hitachi Ltd., Japan.

Tony Parker is a Consultant in Education, Training and Research, and also a Visiting Professor at the University of Cranfield, England (Defence Academy of the UK). He is also Dean of Faculty in three British Universities. His principal research interests are in fracture, fatigue and residual stress in relation to safe-life design of military equipment. Tony Parker has a doctorate in fracture and fatigue of aircraft structures from the University of Southampton, England and was a commissioned officer in the Royal Air Force and Royal Navy.

Iuliana Cernatescu is presently the Technical Lead in the X-Ray Diffraction Laboratory at Pratt & Whitney. In 2003, she received her Ph.D. with Summa cum Laude in Materials and Solid State Physics from the Eötvös Loránd University of Science in Budapest, Hungary. Her Ph.D. work was focused on modeling and experimental determination of crystallographic defect type and density from x-ray diffraction data. Further she worked on nano-materials synthesis and characterization as Post-Doctoral Research Fellow in the School of Materials Science and Engineering at the Georgia Institute of Technology. In her next position, she was the Principal Scientist for PANalytical (former Philips Analytical), which is a major manufacturer of x-ray diffraction, scattering, and fluorescence research equipment. Dr. Cernatescu has over 15 years of experience in the field of x-ray diffraction/scattering, advanced characterization methods, instrumentation, and applications development. Dr. Cernatescu has published over 20 peer reviewed publications and has been an invited speaker and organizer at several materials engineering conferences. In her present position, she is leading the efforts for implementation of key microstructural parameters such as residual stress, crystallographic texture into component lifing and structure analysis by application of classical and development of advanced analytical methods.

Maria Okuniewski is a Research and Development Staff Scientist and Engineer in the Fuel Performance and Design group within the Nuclear Fuels and Materials Division at Idaho National Laboratory, where she has worked since 2008. She obtained her M.S. and Ph.D. degrees in the Nuclear, Plasma, and Radiological Engineering Department at the University of Illinois at Urbana-Champaign. Dr. Okuniewski's interests include: (1) radiation damage in nuclear materials and fuels, (2) microstructure and property relationships in materials, (3) using and developing non-destructive techniques for analyzing material properties, (4) in-situ and ex-situ transmission electron microscopy, and (5) multi-scale modeling of metallic nuclear fuels and cladding. She is a member of the American Nuclear Society, the Materials Research Society, the Minerals, and the Metals, and Materials Society.


Short Updates / Future Thoughts

Mitch Olson is a Ph.D. student at the University of California, Davis working with Professor Michael Hill. His dissertation research focuses on residual stress measurement technology using incremental slitting and the contour method. He previously worked at Los Alamos National Laboratory as a Graduate Research Assistant. Mitch received his B.S. from the University of California, Berkeley in 2009.

Armando Albertazzi has worked at the Mechanical Engineering Department of Federal University of Santa Catarina, Brazil, since 1987. He is focused on optical metrology developments and applications. His group invented an ESPI interferometer with radial in-plane sensitivity that has been used for residual stresses measurement with hole drilling. The fourth generation of this device is very compact and robust and has been intensively used in the field for residual stress measurement services in pipelines. He was promoted Fellow of the SPIE in 2008.

Joe Koury serves as a staff manager at ASTM International in its Technical Committee Operations Division. Joe has worked at ASTM for 12 years and manages 10 technical committees that develop standards for different industries and professions. ASTM International, one of the largest standards development organizations in the world, is a trusted source for technical standards for materials, products, systems, and services. Known for their high technical quality and market relevance, ASTM International standards have an important role in the information infrastructure that guides design, manufacturing and trade in the global economy.

Mike Smith is the Professor of Welding Technology within the Dalton Nuclear Institute at the University of Manchester, with research interests covering the whole field of weld structural performance. He has particular expertise in the modelling and measurement of weld residual stresses, and in understanding their impact on in-service degradation and structural integrity. Prior to moving to Manchester, Mike worked for nearly 25 years in the UK civil nuclear industry as a specialist in structural integrity. His responsibilities included complex structural analyses, the preparation of structural integrity safety cases, development of the R5 and R6 assessment procedures, and leading/participating in multi-national European structural integrity research programmes.

John E. Broussard, III is a Senior Engineer at Dominion Engineering, Inc. (DEI), located outside Washington, DC, in Reston, Virginia. His expertise is in the investigation and technical evaluation of industrial systems and components, often using finite element analysis. John Broussard leads DEI's finite-element analysis services, including welding residual stress, fracture mechanics, and ASME Code evaluations. Before joining DEI in 1994, John received a B.S. degree in Mechanical Engineering from Virginia Polytechnic Institute & State University.

Philip Withers is a Professor at the University of Manchester, UK. His main interests lie in the application of advanced techniques to assess the structural integrity of engineering materials and components. Besides the measurement of stress, he is also interested in manipulating residual stresses to improve structural performance and life, for example using phase transformations in smart materials and weld fillers. Prof. Withers has also developed micron scale variants of the slotting and hole drilling techniques using a focused ion beam microscope and digital image correlation to measure micron scale residual stress variations in components and devices. His work spans the whole range of structural engineering materials, but especially for the nuclear and aerospace sectors. He runs the residual stress unit at Manchester and recently complemented this with the Henry Moseley X-ray Imaging Facility for 3D structure measurement. He is a member of the Royal Academy of Engineering and has been awarded numerous prizes both for research and education innovation, including the 2010 Armourers and Brasiers Prize of the Royal Society for residual stress measurement and imaging using neutron and synchrotron beams.


Posters

Andreas Nau is a Research Assistant at the Institute of Materials Engineering - Metallic Materials at Kassel University, primarily specializing in analyses of residual stresses with mechanical methods. He studied Mechanical Engineering at Frankfurt University of Applied Science from 2002 to 2007 and at Kassel University from 2007 to 2008.

Alessio Benincasa has been employed at SINT Technology since 2004, after graduating in Mechanical Engineering in Florence, Italy. His particular areas of interest include the production and development of the instruments produced by the company, including the automatic equipment for measuring residual stresses by hole drilling Restan-MTS3000. He has made over 1,000 residual stress measurements and elaborations, mainly by hole drilling and ring core methods, and he is certified at the 3rd level (the highest level in Italy) in strain gage tests and measurements. He also gives training lessons on strain gage installation and measurements and on residual stresses.

Mike Woodward started his career as a Metallurgist for the British Steel Corporation and then moved to work at the University of Wales, Newport, where he worked in several positions, ultimately becoming a specialist in the analysis of semiconductor materials and devices. Mike completed a Masters degree at the University of Wales, Swansea, researching electronic devices and disordered semiconductor materials. He then joined Nimbus Technology and Engineering as a research and development engineer, developing an electron beam lithography system and materials processing systems. Mike is currently employed by Pulstec Industrial Co. Ltd. as the manager for Europe, and is responsible for technical support and business development. Mike recently completed a post-graduate certificate in Nanotechnology at the University of Oxford.

Matt Miller is a Professor of Mechanical and Aerospace Engineering at Cornell University, NY. He is interested in solid mechanics and the mechanical behavior of metals, engineering alloys, composites and semiconductors. Dr Miller's research areas include crystal stress measurements, microplasticity, fatigue crack initiation, high temperature behavior of superalloys, mechanical behavior of silicon, design and implementation of new in situ experiments with synchrotron X-rays, multiscale model development and validation. Educational areas focus on mechanics of materials, material selection, X-ray diffraction, graduate solid mechanics, mechanics of composites, experimental methods and state variable modeling.

Horst Bruennet graduated in Sensor and Precision Engineering at the University of Applied Sciences Saarbruecken in 2002 and received an international degree as Master of Science in Sensor Systems Technology at the University of Applied Sciences Karlsruhe in 2004. He worked as a process engineer for the Diesel Systems Division of the Robert BOSCH GmbH between 2004 and 2009. Since 2009 he has been working as a Research Assistant at the Institute of Production Engineering of the Saarland University in the area of residual stress optimized process chain design. He has just finished and submitted his doctoral thesis.

David von Mirbach studied aerospace and space technology at Stuttgart University from 2002 to 2008. Since 2009 he is working as a Research Assistant at the Materials Testing Institute primarily specializing in analyses of residual stresses with mechanical methods. In June 2012 David become the Head of the department "Loading Analyses". He worked at the MPA in the unit "Experimental Stress Analysis" and temporarily in the unit "Sealing Technology", there he could expand his knowledge in the field sectors of mechanical engineering and plant construction. The latest talk was on the 9th International Conference on Residual Stresses (ICRS9), Garmisch-Partenkirchen in 2012.

Michael Bach is a PhD student in the Faculty of Mechanical and Aerospace Engineering at Carleton University, Canada. He is presently completing his thesis work. His interests relate to the residual stresses found welded structures and specifically friction stir-welded structures. He specializes in destructive as well as non-destructive residual stress measurement techniques such as neutron diffraction.

A. K. Balaji is an Associate Professor of Mechanical Engineering, Director of Graduate Studies, and Director of the Sustainable Manufacturing Laboratory at the University of Utah. Professor Balaji obtained his MS and PhD degrees in mechanical engineering at the University of Kentucky in 1996 and 2000 respectively. His research interests span the areas of predictive modeling of manufacturing processes, machining process mechanics, solid-state welding processes, surface integrity of manufactured surfaces, tribology of manufacturing processes, biological and medical applications in manufacturing, and sustainable manufacturing.

Harry Coules is a Research Assistant in the Solid Mechanics group at the University of Bristol, with interests in hybrid methods of residual stress analysis and residual stress reduction in welded structures. He studied Engineering Science at the University of Oxford, and recently completed a PhD at Cranfield University on the reduction of residual stresses in weld seams by high-pressure rolling.


Equipment Demonstrations

Mike Woodward started his career as a Metallurgist for the British Steel Corporation and then moved to work at the University of Wales, Newport, where he worked in several positions, ultimately becoming a specialist in the analysis of semiconductor materials and devices. Mike completed a Masters degree at the University of Wales, Swansea, researching electronic devices and disordered semiconductor materials. He then joined Nimbus Technology and Engineering as a research and development engineer, developing an electron beam lithography system and materials processing systems. Mike is currently employed by Pulstec Industrial Co. Ltd. as the manager for Europe, and is responsible for technical support and business development. Mike recently completed a post-graduate certificate in Nanotechnology at the University of Oxford.

Theo Rickert is a Research and Development Engineer with American Stress Technologies / Stresstech Group, a maker of residual stress measurement instruments. He has a particular interest in residual stress measurements using ESPI with the hole-drilling method. His prior work was in the specialty steel industry. Dr Rickert has a Dipl.-Ing. degree in Materials Science and a Dr.-Ing. degree in Metallurgy and Materials, both from RWTH Aachen, Germany.

Alessio Benincasa has been employed at SINT Technology since 2004, after graduating in Mechanical Engineering in Florence, Italy. His particular areas of interest include the production and development of the instruments produced by the company, including the automatic equipment for measuring residual stresses by hole drilling Restan-MTS3000. He has made over 1,000 residual stress measurements and elaborations, mainly by hole drilling and ring core methods, and he is certified at the 3rd level (the highest level in Italy) in strain gage tests and measurements. He also gives training lessons on strain gage installation and measurements and on residual stresses.

Herb Roy is the Technical Sales Manager for Vishay Precision Group - Micro-Measurements, for the Northwest part of the US. He has completed 35+ years at Micro-Measurements in the following positions: Applications Engineering Technician, Engineering Test Supervisor, Production Supervisor, Applications Engineer, and Technical Sales Manager. Herb has taught numerous strain gage workshops in the Raleigh facility and at customer’s sites like Boeing, Case New Holland and John Deere. Secondary Education: BS in Business Administration, North Carolina Wesleyan College.

Armando Albertazzi has worked at the Mechanical Engineering Department of Federal University of Santa Catarina, Brazil, since 1987. He is focused on optical metrology developments and applications. His group invented an ESPI interferometer with radial in-plane sensitivity that has been used for residual stresses measurement with hole drilling. The fourth generation of this device is very compact and robust and has been intensively used in the field for residual stress measurement services in pipelines. He was promoted Fellow of the SPIE in 2008.

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