Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7173266 | International Journal of Impact Engineering | 2013 | 39 Pages |
Abstract
The effect of strain rate upon the uniaxial response of Ultra High Molecular-weight Polyethylene (UHMWPE) fibres, yarns and laminates of lay-up [0/90]48 has been measured in both the 0/90° and ±45° configurations. The tensile strength of the matrix-dominated ±45° laminate is two orders of magnitude less than that of the fibre-dominated 0/90° laminate, and is more sensitive to strain rate. A piezoelectric force sensor device was developed to obtain the high strain rate data, and this achieved a rise time of less than 1 μs. It is found that the failure strength (and failure strain) of the yarn is almost insensitive to strain rate within the range (10â1-103 sâ1). At low strain rates (below 10â1 sâ1), creep of the yarn dominates and the failure strain increases with diminishing strain rate. The tensile strength of the dry yarn exceeds that of the laminate by about 20%. Tests on single fibres exceed the strength of the yarn by 20%.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
B.P. Russell, K. Karthikeyan, V.S. Deshpande, N.A. Fleck,