TY - JOUR
T1 - The influence of UV radiation and moisture on the mechanical properties and micro-structure of single Kevlar fibre using optical methods
AU - Wang, Huaixi
AU - Xie, Huimin
AU - Hu, Zhenxing
AU - Wu, Dan
AU - Chen, Pengwan
PY - 2012/9
Y1 - 2012/9
N2 - The effects of external environments on the mechanical behaviour and surface micro-structure of single Kevlar fibre have been investigated. Wave diffraction theory and digital image correlation (DIC) were applied to measure the longitudinal and transverse strain of a single Kevlar fibre. The stability and credibility of transverse and longitudinal strain measurement results is guaranteed by averaging the intensity of some images and adopting an optical array extensometer respectively. The results show that the elastic modulus of a single fibre treated under UV irradiation and in water increased 30% and decreased 15% compared to that of untreated ones respectively, the surface roughness increases drastically to a maximum value and then gradually reduces to a stable value with increasing treatment time, which can provide guidance for further study of the interface performance of composite material.
AB - The effects of external environments on the mechanical behaviour and surface micro-structure of single Kevlar fibre have been investigated. Wave diffraction theory and digital image correlation (DIC) were applied to measure the longitudinal and transverse strain of a single Kevlar fibre. The stability and credibility of transverse and longitudinal strain measurement results is guaranteed by averaging the intensity of some images and adopting an optical array extensometer respectively. The results show that the elastic modulus of a single fibre treated under UV irradiation and in water increased 30% and decreased 15% compared to that of untreated ones respectively, the surface roughness increases drastically to a maximum value and then gradually reduces to a stable value with increasing treatment time, which can provide guidance for further study of the interface performance of composite material.
KW - Digital image correlation
KW - Fraunhofer diffraction pattern
KW - Mechanical properties
KW - Micro-structure analysis
KW - Single Kevlar fibre
UR - http://www.scopus.com/inward/record.url?scp=84864632719&partnerID=8YFLogxK
U2 - 10.1016/j.polymdegradstab.2012.06.010
DO - 10.1016/j.polymdegradstab.2012.06.010
M3 - Article
AN - SCOPUS:84864632719
SN - 0141-3910
VL - 97
SP - 1755
EP - 1761
JO - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
IS - 9
ER -