text-only page produced automatically by Usablenet Assistive Skip all navigation and go to page content Skip top navigation and go to directorate navigation Skip top navigation and go to page navigation
National Science Foundation
Awards
design element
Search Awards
Recent Awards
Presidential and Honorary Awards
About Awards
Grant Policy Manual
Grant General Conditions
Cooperative Agreement Conditions
Special Conditions
Federal Demonstration Partnership
Policy Office Website



Award Abstract #9158145

Presidential Young Investigator Award: Polymer Processing, Modelling and Simulation

NSF Org: CMMI
Div Of Civil, Mechanical, & Manufact Inn
divider line
Initial Amendment Date: July 10, 1991
divider line
Latest Amendment Date: June 27, 1996
divider line
Award Number: 9158145
divider line
Award Instrument: Continuing grant
divider line
Program Manager: Delcie R. Durham
CMMI Div Of Civil, Mechanical, & Manufact Inn
ENG Directorate For Engineering
divider line
Start Date: July 15, 1991
divider line
End Date: June 30, 1997 (Estimated)
divider line
Awarded Amount to Date: $317,500.00
divider line
Investigator(s): Tim Osswald tosswald@wisc.edu (Principal Investigator)
divider line
Sponsor: University of Wisconsin-Madison
21 North Park Street
MADISON, WI 53715-1218 (608)262-3822
divider line
NSF Program(s): MATERIALS PROCESSING AND MANFG
divider line
Program Reference Code(s): 9146, 9227, 9251, MANU
divider line
Program Element Code(s): 1467

ABSTRACT

The project will conduct research in the field of polymer processing, composites and rheology, specifically modeling and simulating processes such as injection, compression and resin transfer molding. The outcome of this research will aid the designer in controlling material properties and part quality through innovative modeling, analysis and process simulation. Research will be done on the thermomechanical behavior of composites. A major problem that arises when designing plastic parts, especially those made of fiber reinforced composites, is the change of the part's shape and dimensions due to shrinkage and warpage. A thermomechanical simulation of the molding process of fiber reinforced composites will result from this research. Another study will determine the inertial effects during flow of low viscosity polymers. This is especially interesting for the reaction injection molding (RIM) process where cycle times of only fractions of a second are sought. It is not possible to predict flow patterns and orientations for this mold filling process using current simulations, since they are all based on the assumption of negligible inertia terms. The project will also develop a simulation of the thermoforming process of sheet materials, specifically, fiber matt preforms used in the resin transfer molding process and wood flour filled polypropylene sheets used for interior body panels. It is important to know the filler orientation after forming and to detect the formation of folds or rips in the sheet which would make it unacceptable for use. Understanding the thermomechanical behavior of plastics and being able to predict filling patterns, filler orientation, shrinkage, warpage and surface waviness before a part is actually molded leads to higher part quality and eliminates some of the expensive and time consuming tasks done in the early stages of part and mold design.

 

Please report errors in award information by writing to: awardsearch@nsf.gov.

 

 

Print this page
Back to Top of page
  FUNDING   AWARDS   DISCOVERIES   NEWS   PUBLICATIONS   STATISTICS   ABOUT NSF   FASTLANE  
Research.gov  |  USA.gov  |  National Science Board  |  Recovery Act  |  Budget and Performance  |  Annual Financial Report
Web Policies and Important Links  |  Privacy  |  FOIA  |  NO FEAR Act  |  Inspector General  |  Webmaster Contact  |  Site Map
National Science Foundation Logo
The National Science Foundation, 4201 Wilson Boulevard, Arlington, Virginia 22230, USA
Tel: (703) 292-5111, FIRS: (800) 877-8339 | TDD: (800) 281-8749
  Text Only Version