High Strain and Strain-Rate Behaviour of PTFE/Aluminium/Tungsten Mixtures

Details High Strain and Strain-Rate Behaviour of PTFE/Aluminium/Tungsten Mixtures High Strain and Strain-Rate Behaviour of PTFE/Aluminium/Tungsten Mixtures

2007-11-08

arxiv.org/abs/0711.1191v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 6 figures, paper is in press in Proceedings of the Conference of the American Physical Society Topical Group on Shock

Scientific paper

Conventional drop-weight techniques were modified to accommodate low-amplitude force transducer signals from low-strength, cold isostatically pressed 'heavy' composites of polytetrafluoroethylene, aluminum and tungsten. The failure strength, strain and the post-critical behavior of failed samples were measured for samples of different porosity and tungsten grain size. Unusual phenomenon of significantly higher strength (55 MPa) of porous composites (density 5.9 g/cc) with small W particles (less than 1 micron) in comparison with strength (32 MPa) of dense composites (7.1 g/cc) with larger W particles (44 microns) at the same volume content of components was observed. This is attributed to force chains created by a network of small W particles. Interrupted tests at different levels of strain revealed the mechanisms of fracture under dynamic compression.

Affiliated with

Also associated with

No associations

Rating

High Strain and Strain-Rate Behaviour of PTFE/Aluminium/Tungsten Mixtures does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with High Strain and Strain-Rate Behaviour of PTFE/Aluminium/Tungsten Mixtures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High Strain and Strain-Rate Behaviour of PTFE/Aluminium/Tungsten Mixtures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-377336