Experimental investigation of surface temperatures of some polymers in unlubricated sliding

An experimental method capable of measuring the instantaneous surface temperatures of very small areas (e.g., 1.778 x 10⁻⁵ min diameter) was developed and used to investigate the frictional interface of a sliding system - a fixed polymer sphere loaded against a thin sapphire disk. Basically, the method involves measuring the infrared radiance (which can be converted to temperature mathematically) from the contact area with a highly advanced infrared microscope. Friction at the interface is also obtained simultaneously. In this research, the surface temperatures of four different polymers, namely high density polyethylene, polytetrafluoroethylene, polystyrene, and polymethylmethacrylate were investigated. Effects of load and sliding speed on the friction and wear behavior of the polymers were examined. Finally, the experimental results were compared with theoretical calculations, and reasons for the discrepancies were discussed.

Name thesis:degree_name

M. S.

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Mechanical Engineering

Department dc:contributor.department

Mechanical Engineering

Grantor dc:publisher

Virginia Polytechnic Institute and State University

Year dc:date.issued

1976

Author dc:creator

• Li, Stephen Hongman

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en

Handle dc:identifier.uri

http://hdl.handle.net/10919/109219

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/109219