Paper Number
SI14 

Session
Surface and Interfacial Rheology

Title
The development of an innovative triborheometry fixture/design to study the frictional dynamics of solid-liquid systems

Presentation Date and Time
October 10, 2011 (Monday) 5:15

Track / Room
Track 3 / Founders Ballroom A

Authors (Click on name to view author profile)

1. Medina, Dora I. (Massachusetts Institute of Technology)
2. Elmoumni, Aadil (TA Instruments)
3. Braithwaite, G.J.C. (Cambridge Polymer Group)
4. McKinley, Gareth H. (Massachusetts Institute of Technology)

Author and Affiliation Lines (in printed abstract book)
Dora I. Medina¹, Aadil Elmoumni², G.J.C. Braithwaite³, and Gareth H. McKinley^1
1Massachusetts Institute of Technology, Cambridge, MA 02139; ²TA Instruments, New Castle, DE 19720; ³Cambridge Polymer Group, Boston, MA 02129

Speaker / Presenter 
Medina, Dora I.

Text of Abstract
This paper describes an innovative triborheometry fixture/design to study the frictional dynamics of several solid-liquid systems, such as skin substitute/lubricants, PDMS elastomer/silicon oil and other natural products, for example banana skin peel. The triborheometry fixture/design includes various hardware components; probably the most important are the helical springs of different stiffnesses. The fixtures are adapted to a commercial rheometer and the experimental set-up would be modified according to the system to test. By altering process conditions the effect of surface roughness/lubricant fluid would enable us to measure the coefficient of friction at different angular velocities and contact stresses for the different solid-liquid systems. In this paper, experimental details for the triborheology tests along with materials response are presented. From the data, quantitative explanations for the Beam/Disc-coupling and material-structures design are given.