Abstract
A material configuration of central importance in composite materials or in protective coating technology is a thin film of one material deposited onto a substrate of a different material. Fabrication of such a structure inevitably gives rise to stress in the film due to lattice mismatch, differing coefficient of thermal expansion, chemical reactions, or other physical effects. Therefore, in general, the weakest link in this composite system often resides at the interface between the thin film and substrate. In order to make multi-layered electronic devices and structural composites with long-term reliability, the fracture behavior of the material interfaces must be known. This project is intended to address the problems associated with interface fracture toughness evaluation and offers an innovative testing procedure for the determination of interface fracture toughness applicable to thin coating materials in general.
| Original language | English |
|---|---|
| Article number | PVP2005-71778 |
| Pages (from-to) | 229-238 |
| Number of pages | 10 |
| Journal | American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP |
| Volume | 6 |
| DOIs | |
| State | Published - 2005 |
| Event | 2005 ASME Pressure Vessels and Piping Conference, PVP2005 - Denver, CO, United States Duration: Jul 17 2005 → Jul 21 2005 |
Keywords
- Composite material
- Interface fracture toughness
- Spiral notch
- Thin film coating material
- Torsion test