Abstract
In this paper, the TiNi fiber reinforced / Polycarbonate(PC) composite material is developed, and its properties is studied. Conducting fatigue experiments, shape memory effect of the material for preventing fatigue crack growth are investigated. The fatigue behavior and crack propagation are observed under increasing temperature with a SEM servo-pulser, which is a fatigue testing instrument with scanning electron microscope. As the results, the effectiveness of fatigue resistance is confirmed. The shape memory effect and expansion behavior of the matrix caused by increasing temperature create the effect of the fatigue crack propagation control. It is verified that the controlling of fatigue crack growth is attributed to the compressive stress field in the matrix which is caused by shrinkage of the TiNi fibers above austenitic finishing temperature (Af).
| Original language | English |
|---|---|
| Pages (from-to) | 1093-1096 |
| Number of pages | 4 |
| Journal | Key Engineering Materials |
| Volume | 334-335 II |
| DOIs | |
| Publication status | Published - 2007 |
| Externally published | Yes |
Keywords
- Crack closure
- Crack propagation
- Fatigue
- Polycarbonate composite
- Shape memory alloy
- Shrinkage effect
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering