Journal of Materials Science

, Volume 51, Issue 12, pp 5939–5947 | Cite as

Dynamic modulus and strain wave velocity in ballistic fibre strands

  • Menghe MiaoEmail author
Original Paper


Strain wave propagation velocity in fibre materials is a primary consideration in the design of body armours for ballistic protection. In this paper, we compare the strain wave propagation (sonic) velocities and moduli of parallel and twisted ballistic fibre strands (yarns) derived from quasi-static tensile test and strain wave pulse test. In parallel multifilament yarns, the individual fibres behave independently from each other, and the yarn sonic velocities and moduli derived from the two test methods match each other very closely. In yarns with a twisted structure by twisting multifilament yarn or by spinning short fibres, fibres in the yarns are compressed against each other and fibre-to-fibre friction plays a significant role. Consequently, the yarn sonic velocities and moduli determined by the strain wave pulse method are significantly greater than that derived from the quasi-static tensile method.


Ultrahigh Molecular Weight Polyethylene Sonic Velocity Strain Wave Staple Fibre Specific Modulus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was conducted within the Defence Materials Technology Centre, which was established and is supported by the Australian Government’s Defence Future Capability Technology Centre (DFCTC) initiative. Jill McDonnell carried out some of the strain wave pulse propagation tests on the twistless multifilament yarns. Badar Zaidi conducted the single-fibre tests on Favimat fibre tensile testing machine.


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.CSIRO ManufacturingBelmontAustralia
  2. 2.Defence Materials Technology CentreHawthornAustralia

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