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 Expert  714214

Expert in Polymer Rheology and Plastics Processing


Available for your Consulting and Expert Witness Needs

Wisconsin (WI)
USA
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise:

Listed with other top experts in: 

Expert is currently working on constitutive modeling of the extensional behavior of molten plastics. He has developed models that allow the behavior in extension to be inferred from measurements in exponential shear. The material behavior in exponential shear is measured more easily than in extension.
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extensional viscosity

As a teacher of graduate and undergraduate courses in plastics processing, Expert is knowledgeable in the field of non-Newtonian fluid mechanics.
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fluid mechanics

Through his doctoral research on rheological measurements and his continued development of rheological instrumentation, Expert has played a leadership role in rheological measurement, publishing extensively on this.
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fluid rheology measurement

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liquid rheological measurement

As a result of his research on sliding plate rheometry, Expert has become an expert on controlled-strain experiments in simple shear on polymer melts, especially under large deformations.
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mechanical strain

Expert has developed special transducers for measuring the local shear stress in molten plastics, as in a sliding plate rheometer.
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mechanical stress

Through his research on the solidification of plastic pipe, Expert is knowledgeable of combined problems of fluid flow with melting and with freezing. His current research efforts includes an investigation of the meltability of cheese.
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melt material

As a result of his doctoral research, continued research, and teaching at both the graduate and undergraduate level, Expert has established a position of world leadership on melt rheology. His research includes measurement of the steady shear behavior, linear viscoelastic response, and behavior in large deformations.
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melt rheology

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non-Newtonian fluid rheology

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rheological property

Through teaching graduate and undergraduate courses in plastics processing, Expert is an expert on the flow and deformation of polymeric liquids. He is an expert on polymer melt flow rheology.
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polymer flow

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melt flow

Through his supervision of graduate research, and through undergraduate and graduate teaching of plastics processing, Expert has established a leadership position in polymer processing, especially in the field of plastics processing. He is knowledgeable of film blowing, blow molding, injection molding, and plastic pipe extrusion. Through highly specialized research, he has established a leadership position on the problem of sag during plastic pipe extrusion. Through on-going research, he has become knowledgeable on the die lip build-up in extrusion (also called die drool). Expert is also knowledgeable of sheet extrusion and calendering.
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polymer processing

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polymer hardness

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rubber hardness testing

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sclerometer

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shore hardness

Expert has extensive experience measuring and interpreting the relaxation behavior of molten plastics. His research includes the measurement and interpretation of both linear and nonlinear relaxation behaviors.
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relaxation measurement

As a result of his in-depth research on rheological measurements and continued development of rheological instrumentation, Expert has established a position of world leadership on rheometer development. He has expertise on the development and commercialization of new rheometers.
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rheological measurement

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rheometer

As a summer student, Expert once operated a nylon spinning line. His ongoing research on extensional rheology makes him knowledgeable of melt spinning, especially on the role played by rheology in melt spinning.
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melt spinning

Through ongoing research and undergraduate and graduate teaching of plastics processing, Expert has gained expertise on the measurement and interpretation of viscoelastic properties. His research includes the measurement and interpretation of both the linear and nonlinear viscoelastic properties.
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polymer viscoelastic property

Expert is also an expert on the measurement and interpretation of the stress relaxation behavior of molten plastics. His research includes measuring and interpreting both the linear and nonlinear stress relaxation behaviors.
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stress relaxation

Expert has advanced knowledge of the viscoelasticity of polymeric liquids. He is also knowledgeable on the viscoelasticity of polymeric solids. His research includes the measurement and interpretation of both the linear and nonlinear viscoelastic properties.
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viscoelasticity

Stemming from two years of industrial research and many years of related work on extrusion, Expert is knowledgeable of polymer fracture. He is an expert on the failure of extruded plastic pipe.

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polymeric material fracturing

Expert is an expert on the rheology of molten plastics, and especially on the role played by rheology on melt processability. He is an expert on the flow of molten plastics.
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molten plastic

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plastic flow

Expert has years of experience working on plastic pipe processing.
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plastic pipe

Expert is working on the role played by rheology on the thermoforming of polymer sheet.
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polymer sheet

Expert's laboratory is equipped with capillary rheometers, including melt indexers. Expert has his PhD in rheometry.
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capillary rheometer

Expert has taught fluid dynamics at the graduate level during his visiting professorship at the National University of Singapore. He also teaches macromolecular hydrodynamics, the fluid dynamics of polymeric liquids.
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fluid dynamics

Expert developed and teaches the graduate course on food rheology at the University of Wisconsin - Madison.
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food rheology

Expert is a professional rheologists. He teaches and conducts University research on non-Newtonian fluid flow, especially on molten plastics.
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non-Newtonian fluid flow

Expert has published extensively on non-Newtonian liquid flow, especially on manufacturing flows such as plastics processing.
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non-Newtonian liquid flow

Expert used to operate a nylon spinning line at the Kingston Nylon Works of DuPont Canada. He now teaches graduate courses on polymer processing, including sections on spinning.
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nylon extrusion

Expert is an expert on plastics injection molding. He has published on core deflection and flash in injection molding.
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plastic injection molding

Expert is an authority on developing the working equations for plastics processing equipment. Expert is an accomplished teacher on the design of plastics processing equipment.
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plastics processing equipment

Expert has published extensively on plastic pipe, including on simulating the extrusion of polyethylene pipe. The study of sag in HDPE pipe extrusion is one of Expert's specialties.
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polyethylene pipe

Expert has published on the rheology of filled plastics.
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polymer compounding

Expert is an authority on polymer extrusion, including plastics pipe extrusion.
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polymer extrusion


Show Only Primary Areas of Expert Consulting

Secondary Expertise
acrylonitrile butadiene styrene resin pipe, biorheology, calendering, dough rheology, durometer, elastomer compounding, elastomer selection, elastomer sheet, fluoropolymer processing, gel rheological measurement, hardness, hardness testing, injection compression molding, inviscid melt spinning, liquid state mechanics, medical polymer extrusion, medical polymer selection, melt viscosity, microhardness, non-Newtonian fluid, plastic chemical property, plastic creep, plastic forming, plastic lubricity, plastic material, plastic material property, plastic molding, plastic physical property, plastic profile extrusion, plastic stress analysis, plastic stress corrosion, plastic stress corrosion cracking, plastic stress testing, plastic welding, plasticity, plastics durability, plastics mold, polybutylene pipe, polymer, polymer aging, polymer calendering, polymer chemistry, polymer extrusion screw, polymer property, polymer rheology, polymer science, polymer selection, polymer stress relaxation, rheology, rubber, rubber compounding, rubber durometer, rubber extrusion, rubber hardness, rubber molding, rubber selection, scleroscope hardness number, shear modulus, shear strain, shear strength, sheet extrusion, viscoelastic material mechanical property, viscosity measurement

Basic Expertise
electrorheology, energy-efficient plastic processing, extrusion die, gas rheological measurement, meltblowing, microwave plastic processing, paper calendering, plastic die cutting, plastic drying, plastic lubrication, plastics thermal expansion, polymer bulk modulus of elasticity, polymer material analysis, polymer modulus of elasticity, solid body cracking
Localities:
Expert may consult nationally and internationally, and is also local to the following cities: Milwaukee, Wisconsin;  Madison, Wisconsin;  Kenosha, Wisconsin;  Racine, Wisconsin;  Appleton, Wisconsin;  Rockford, Illinois;  Aurora, Illinois;  Elgin, Illinois;  Waukegan, Illinois;  and Schaumburg, Illinois.

Education:
Year   Degree   Subject   Institution  
1987   Ph.D.   Chemical Engineering   McGill University - Montreal  
1983   M.Sc.   Chemical Engineering   Queen's University - Kingston  
1981   B.Sc.   Chemical Engineering   Queen's University - Kingston  

Work History:
Years   Employer   Department   Title   Responsibilities

1996 to

 

(Undisclosed University)

 

Rheology Research Center

 

Chair

 

Coordinates and facilitates research for 14 faculty colleagues conducting leading research on the rheology of complex fluids.

1994 to

 

(Undisclosed University)

 

Mechanical Engineering

 

Professor

 

Teaches courses on polymer processing and polymer dynamics. Supervises graduate research on rheology and plastics processing.


Career Accomplishments:
Associations/Societies

Expert is a member of The Society of Rheology, the American Institute of Physics, the Applied Rheology Special Interest Group of the Society of Plastics Engineers, the British Society of Rheology, the Canadian Society of Rheology, the European Society of Rheology, the Groupe Français de Rhéologie, and The International Society of Biorheology.

Licenses/Certifications

He is a licensed Professional Engineer in Wisconsin.

Professional Appointments

Associate Editor for Business, Journal of Rheology.

Awards/Recognition

Expert was named Professeur de l'Academie des Sciences by the French Academy of Sciences in 1994.


Publications:
Publications and Patents Summary

He has co-authored more than 50 refereed journal publications.

Selected Publications and Publishers  
 - Journal of Applied Mechanics  
 - Review of Scientific Instruments  
 - Polymer Engineering and Science  
 - Journal of Engineering Materials and Technology  

Consulting Services:
Recent Client Requests:
  • Expert for consulting on Extrusion.
  • Expert for consulting on plastic packaging.
  • Elastomer expert for consulting on natural rubber creep & set properties.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Expert Witness Experience Summary:
EXPERT WITNESS, PATENT LITIGATION

Adduci, Maestriani & Schoenberg (2003) Baker, Donelson, Bearman, Caldwell & Berkowitz (2007) Bromberg & Sunstein (2002-2003) Crowell & Moring (2003-2006) Foley & Lardner (2003) Godfrey & Kahn (2007-present) Jenner & Block (1997) Katz, Teller, Brant & Hild (2008-present) Knobbe, Martens, Olsen & Bear (2006-present) Sidley & Austin (1996-97) Sidley, Austin, Brown & Wood (1999-2006) Shaw Pittman (2003-2004) Vinson & Elkins (2007-present)

EXPERT WITNESS, PRODUCT LIABILITY

Tucker, Ellis & West (2007-present) Youngkin, Catlin, Bryan & Stacy (1988-1990)

Recent Litigation Client Requests:
  • Expert in film and sheet extrusion, stress relaxation & annealing.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

International Experience:
Years   Country / Region   Summary
2000 to 2001   Singapore   Expert was Visiting Professor at the National University of Singapore, in the Department of Chemical & Environmental Engineering.
2007 to 2007   Taiwan   Expert spends his July's visiting Chung Yuan University near Taipei, collaborating with the molding research center in the department of Mechanical Engineering.
1993 to 1994   France   Expert was Professeur de l'Académie des Sciences at the Paris School of Mines, Materials Processing Centre, Sophia-Antipolis.
1992 to 1992   Canada   He was Visiting Professor at McGill University, in the Department of Chemical Engineering, Montreal.
1993 to 1994   Switzerland   Expert was Visiting Professor at the Swiss Federal Institute of Technology, in the Materials Department, Lausanne.

Language Skills:
Foreign Language   Description
French   Expert is fluent in French.
Mandarin Chinese   Expert now lectures in Mandarin Chinese on rheology, plastics processing and transport phenomena.

Additional Skills and Services:
Training/Seminars

(3) “Beginning Rheology,” 18 students, in collaboration with Professor F.A. Morrison, Chemical Engineering, Michigan Technological University. In conjunction with The Society of Rheology, 79th Annual Meeting, Salt Lake City, UT (October 6-7, 2007).

(2) “Beginning Rheology,” 14 students, in collaboration with Professor F.A. Morrison, Chemical Engineering, Michigan Technological University. In conjunction with The Society of Rheology, 76th Annual Meeting, Lubbock, TX (February 12-13, 2005).

(1) “The Rheology of Thermoplastics,” 70 students, in collaboration with Dr. T. Samurkas, Research Engineer, Dow Chemical Company. DOW PLASTICS SHORT COURSE NO. 7436. Texas Polymer Research Center, Freeport, TX (July 23-24, 1991).


 

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