Abstract
The protective performance of glass fiber reinforced aerogel was studied preliminarily on an improved spilt Hopkinson pressure bar. High speed photography was used to study the protective mechanism of aerogel. Anti-bullet property of aerogel/steel target was investigated by target experiments. Results showed that after incident pulse shaping using aerogel with a thickness of 12mm, the shape of the stress-time curve on the incident bar changed from rectangle to triangle, the highest stress on the incident bar decreased from 700MPa to 311MPa, the duration time of the pulse increased from 80μs to 210μs. Aerogel burst and consumed a lot of energy when it was impacted by bullet, the stress state of aerogel was also changed. Fiber could postpone the burst process of aerogel and was beneficial to consuming energy. Aerogel/steel target had excellent anti-bullet property. Aerogel could protect the steel target effectively.
| Original language | English |
|---|---|
| Pages (from-to) | 746-748+756 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 30 |
| Issue number | 6 |
| Publication status | Published - Jun 2010 |
Keywords
- Aerogel
- Incident pulse shaping
- Protective performance
- Target experiment