Abstract
The time-dependent creep compliance functions of polydimethylsiloxane (PDMS) materials of different crosslink density were studied through indentation creep tests of fresh PDMS samples with silica tips. Step loads from 0.1 mN to 10 mN were applied to the PDMS sample surfaces, and the dwell period was 600 seconds. A semi-empirical viscoelastic adhesive contact model (SEAVCM) based on viscoelastic adesive contact mechanics and viscoelastic fracture mechanics recently developed is applied to obtain the indentation creep functions. The influences of crosslink density, applied load, and tip size are investigated. The experimental depth data agree well with the model predictions.
| Original language | English (US) |
|---|---|
| Pages | 16-19 |
| Number of pages | 4 |
| Volume | 69 |
| No | 4 |
| Specialist publication | Tribology and Lubrication Technology |
| State | Published - Apr 2013 |
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Surfaces and Interfaces
- Surfaces, Coatings and Films