TY - GEN
T1 - Dynamic tensile properties of polyethylene terephthalate fiber bundle with large deformability
AU - Bai, Y. L.
AU - Yan, Z. W.
AU - Dai, J. G.
AU - Zhu, D. J.
AU - Han, Q.
AU - Du, X. L.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - In this paper, strain rate effects on the tensile mechanical properties of Polyethylene Terephthalate (PET) fiber bundles at room temperate were studied. First of all, an MTS load frame together with an Instron drop-weight impact system were used to carry out the tensile test under the quasi-static (1/600s-1) and the dynamic loadings (40, 80, 120 and 160s-1), respectively. The dynamic mechanical properties, consisting of the tensile strength, peak strain, elastic modulus and toughness, were analyzed based on the test data. It was concluded that the tensile strength increases with strain rate while the peak strain and toughness decrease with the strain rate. The initial elastic modulus remains almost unchanged at the low strain rate (no more than 40s-1) and starts to grow when the strain rate is beyond 40s-1. The second-stage elastic modulus rises continuously with the strain rate from 1/600 to 160s-1. Afterwards, the dynamic tensile strength of a PET fiber bundle was statistically analyzed by using the two-parameter Weibull distribution model that can help to quantify the scatter of the dynamic tensile strength. The corresponding parameters can be added into a numerical simulation in future to reflect the different tensile strength caused by defects.
AB - In this paper, strain rate effects on the tensile mechanical properties of Polyethylene Terephthalate (PET) fiber bundles at room temperate were studied. First of all, an MTS load frame together with an Instron drop-weight impact system were used to carry out the tensile test under the quasi-static (1/600s-1) and the dynamic loadings (40, 80, 120 and 160s-1), respectively. The dynamic mechanical properties, consisting of the tensile strength, peak strain, elastic modulus and toughness, were analyzed based on the test data. It was concluded that the tensile strength increases with strain rate while the peak strain and toughness decrease with the strain rate. The initial elastic modulus remains almost unchanged at the low strain rate (no more than 40s-1) and starts to grow when the strain rate is beyond 40s-1. The second-stage elastic modulus rises continuously with the strain rate from 1/600 to 160s-1. Afterwards, the dynamic tensile strength of a PET fiber bundle was statistically analyzed by using the two-parameter Weibull distribution model that can help to quantify the scatter of the dynamic tensile strength. The corresponding parameters can be added into a numerical simulation in future to reflect the different tensile strength caused by defects.
KW - Dynamic tensile mechanical properties
KW - Polyethylene terephthalate
KW - Strain rate
KW - Weibull analysis
UR - http://www.scopus.com/inward/record.url?scp=85077633515&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:85077633515
T3 - 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018
SP - 183
EP - 186
BT - 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018
A2 - Ferrier, Emmanuel
A2 - Benzarti, Karim
A2 - Caron, Jean-Francois
PB - International Institute for FRP in Construction (IIFC)
T2 - 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018
Y2 - 17 July 2018 through 19 July 2018
ER -