TY  - JOUR
AB  - Purpose Para-aramid fabrics see service in a great variety of applications, such as heavy weight lifting applications, penetration protective multilayer panels, etc. It is, therefore, increasingly important to understand the strain rate range at which the fabric has optimum mechanical properties. Although this is a field that has not been studied before, it is of great significance since it allows for the determination of the fabric’s layer location within the multilayered structure which offers maximum overall performance. The paper aims to discuss this issue.Design/methodology/approach Rectangular strips of PARAX 300 S8 woven para-aramid fabric underwent uniaxial tensile tests at various extension rates. The angle between two fibers at the center of each specimen was measured after the fabrics were elongated at different tensile extensions. This recovery angle was determined by visual analysis of the test video recordings after specimen unloading. Based on this, the recovery of the weaving form after unloading was also estimated for each tensile extension. A recovery degree based deformation characterization of the sections of a typical load/extension curve has been introduced.Findings The fabric does not appear to be strain rate sensitive for a strain rate range of 0.03 s-1 to 0.53 s-1, and its load/extension characteristics are generally not affected by the extension rate. However, break load and maximum elongation values appear reduced at actuator velocity of 2,400 mm/min and enhanced at 3,600 mm/min. Finally, the effect of extension rate on the different deformation zones of the material is reported and discussed.Originality/value The current research work offers a novel approach for the investigation of non-standard response of woven para-aramid fabrics when subjected to tensile loading under various strain rates. Additionally, a new approach is introduced to explain in detail the deformation zones based on the recovery degree of the fiber orientation angle after unloading.
VL  - 30
IS  - 2
SN  - 0955-6222
DO  - 10.1108/IJCST-12-2016-0134
UR  - https://doi.org/10.1108/IJCST-12-2016-0134
AU  - Seretis Georgios V.
AU  - Theodorakopoulos Ioannis D.
AU  - Manolakos Dimitrios E.
AU  - Provatidis Christopher G.
PY  - 2018
Y1  - 2018/01/01
TI  - Effect of strain rate on the tensile performance of woven para-aramid fabrics
T2  - International Journal of Clothing Science and Technology
PB  - Emerald Publishing Limited
SP  - 195
EP  - 209
Y2  - 2024/04/23
ER  -