Daniel J. Klingenberg

Professor

3006 Engineering Hall
1415 Engineering Drive
Madison, WI 53706

Ph: (608) 262-8932
Fax: (608) 262-5434
klingen@engr.wisc.edu

Primary Affiliation:
Chemical and Biological Engineering

Additional Affiliations:
Materials Science Program,


Profile Summary

Magnetorheological and Electrorheological Suspensions. The magnetorheological (MR) and electrorheological (ER) responses are the dramatic variation in suspension rheological properties due to large applied magnetic and electric fields. Development of proposed applications, including MR and ER clutches, brakes, engine mounts and robotic actuators, is currently limited by a lack of understanding of the underlying mechanisms and by the inability to produce effective, durable suspensions. Our research addresses each of these issues.

Fiber Suspension Rheology. The behavior of fiber suspensions is important to many industrial processes, from papermaking to processing reinforced composites. Our approach focuses on understanding the relationships between fiber properties and interactions, suspension structure and rheological properties of non-Brownian fiber suspensions. We combine experiments probing the microstructure and rheology, "molecular" simulation techniques, and theoretical development to probe the above relationships. Particular problems that we address include the role of fiber flexibility and concentration on the entanglement and flocculation of fibers, the rheological response of entangled networks, and the evolution of anisotropy in these suspensions. Our research concentrates on understanding the fundamental chemistry and physics of transport processes of heterogeneous media, particularly the role of colloidal and interfacial properties on the mechanical and rheological properties of materials. Applications of this area of research are quite broad, ranging from synthesizing new materials to to processing of lignocellulosic biomass to understanding diseases in the human body. Many new and interesting systems suffer from a lack of fundamental understanding and experimental data, inhibiting development and applications. Our research program contains both an experimental effort and the analytical work required to fully understand the controlling factors. Our ultimate goal is to understand the underlying chemistry and physics in order to improve processes and material properties.

Education

  • B.S., University of Missouri-Rolla
  • M.S., Ph.D., University of Illinois

Research Interests

  • colloid science
  • suspension rheology
  • electromagnetic phenomena in materials

Awards, Honors and Societies

  • NSF CAREER Award (1995)
  • Polygon Outstanding Instructor Award (1993)

Publications

  • \"Electrorheology: Mechanisms and Models,\" (with M. Parthasarathy), Mat. Sci. Eng. R, invited review paper, R17 57-103 (1996).
  • \"Simulation of Single Fiber Dynamics,\" (with P. Skjetne and R.F. Ross), J. Chem. Phys., 107 2108-2121 (1997).
  • \"Electrostriction of Polarizable Media: Comparison of Models with Experimental Data,\" (with Y.M. Shkel), J. Appl. Phys., 83 7834-7843 (1998).
  • \"Simulation of Flowing Wood Fiber Suspensions,\" (with R.F. Ross), J. Pulp and Paper Sci., 24 388-392 (1998).
  • \"Electro-and Magneto-rheology,\" (with P.J. Rankin and J.M. Ginder), invited article, Curr. Opin. Coll. Int. Sci., 4 373-381 (1998).
  • \"Large Amplitude Oscillatory Shear of Electrorheological Suspensions,\" (with M. Parthasarathy), J. Non-Newt. Fluid Mech., 81 83-104 (1999).
  • \"Model of a Magnetizable Elastic Material,\" (with V. A. Naletova , V. A. Turkov and Y. M. Shkel), J. Magnetism and Magnetic Mat., 202(2-3), 570-573 (1999).
  • \"A Continuum Approach to Electrorheology,\" (with Y. M. Shkel), J. Rheol., 43, 1307-1322 (1999).
  • \"Magnetorheology in Viscoplastic Media,\" (with P. J. Rankin and A. T. Horvath), Rheol. Acta, 38, 471-477 (1999).
  • \"Pulp Extrusion at Ultra-high Consistencies: a New Processing Method for Recycling Wastepapers and Papermill Sludges,\" (with S. Zauscher, C. T. Scott, and J. L. Willet), TAPPI J., 83, 62 (2000).
  • \"Mechanical Flocculation in Flowing Fiber Suspensions,\" (with C. F. Schmid), Phys. Rev. Lett., 84, 290-293 (2000).
  • \"Properties of Fiber Flocs with Frictional and Attractive Interfiber Forces,\" (with C. F. Schmid), J. Coll. Int. Sci., 226, 136-144 (2000).
  • \"Simulation of Fiber Flocculation: Effects of Fiber Properties and Interfiber Friction,\" (with C. F. Schmid and L. H. Switzer), J. Rheol., 44, 781-809 (2000).
  • \"Normal Forces Between Cellulose Surfaces Measured With Colloidal Probe Microscopy,\" (with S. Zauscher), J. Coll. Int. Sci., 229, 497-510 (2000).
  • \"Friction Between Cellulose Surfaces Measured with Colloidal Probe Microscopy,\" (with S. Zauscher), Coll. Surf. A, 178, 213-229 (2001).
  • \"Magnetorheology and Magnetostriction of Isolated Chains of Nonlinearly Magnetizable Spheres,\" (with Y. M. Shkel), J. Rheol., 45, 351-368 (2001).
  • \"Surface Forces and Friction Between Cellulose Surfaces in Aqueous Media\", (with S. Zauscher), Nordic Pulp and Paper Research Journal, in press, 2001.
  • \"Magnetorheology: Applications and Challenges,\" invited article, AIChE J., 47, 246-249 (2001).

Courses

Fall 2014-2015

  • CBE 547 - Introduction to Colloid and Interface Science

  • CBE 489 - Honors in Research
  • CBE 990 - Thesis-Research
  • CBE 890 - Pre-Dissertator\'s Research
  • CBE 790 - Master\'s Research or Thesis
  • CBE 599 - Special Problems
  • CBE 562 - Special Topics in Chemical Engineering
  • Profile Summary

    Magnetorheological and Electrorheological Suspensions. The magnetorheological (MR) and electrorheological (ER) responses are the dramatic variation in suspension rheological properties due to large applied magnetic and electric fields. Development of proposed applications, including MR and ER clutches, brakes, engine mounts and robotic actuators, is currently limited by a lack of understanding of the underlying mechanisms and by the inability to produce effective, durable suspensions. Our research addresses each of these issues.

    Fiber Suspension Rheology. The behavior of fiber suspensions is important to many industrial processes, from papermaking to processing reinforced composites. Our approach focuses on understanding the relationships between fiber properties and interactions, suspension structure and rheological properties of non-Brownian fiber suspensions. We combine experiments probing the microstructure and rheology, "molecular" simulation techniques, and theoretical development to probe the above relationships. Particular problems that we address include the role of fiber flexibility and concentration on the entanglement and flocculation of fibers, the rheological response of entangled networks, and the evolution of anisotropy in these suspensions. Our research concentrates on understanding the fundamental chemistry and physics of transport processes of heterogeneous media, particularly the role of colloidal and interfacial properties on the mechanical and rheological properties of materials. Applications of this area of research are quite broad, ranging from synthesizing new materials to to processing of lignocellulosic biomass to understanding diseases in the human body. Many new and interesting systems suffer from a lack of fundamental understanding and experimental data, inhibiting development and applications. Our research program contains both an experimental effort and the analytical work required to fully understand the controlling factors. Our ultimate goal is to understand the underlying chemistry and physics in order to improve processes and material properties.


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