TY - JOUR
T1 - Tensile fracture properties of single glass fiber in cryogenic environment
AU - Hayakawa, Mamoru
AU - Taniguchi, Norihiko
AU - Nishiwaki, Tsuyoshi
AU - Hirayama, Norio
AU - Kawada, Hiroyuki
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2010/6
Y1 - 2010/6
N2 - The strengthening mechanism of the glass-fiber at cryogenic temperature has not been fully studied so far. In the present study, tensile tests of a single E-glass fiber with heat treatment in air and liquid nitrogen were conducted to reveal the strengthening mechanism. The strength of glass fiber in liquid nitrogen was twice as high as the strength in air. Based on the area of the mirror zone in the fracture surface, the mirror constant was detemined. Besides, the mirror constant of the glass fiber were equal regardless of the heat treatment condition and the testing temperature. From the observation of surface crack, it was clarified that the mirror zone was the mark of surface flaw propagation and therefore it was suggested that the area of mirror zone doesn't have a direct effect on fiber strength.
AB - The strengthening mechanism of the glass-fiber at cryogenic temperature has not been fully studied so far. In the present study, tensile tests of a single E-glass fiber with heat treatment in air and liquid nitrogen were conducted to reveal the strengthening mechanism. The strength of glass fiber in liquid nitrogen was twice as high as the strength in air. Based on the area of the mirror zone in the fracture surface, the mirror constant was detemined. Besides, the mirror constant of the glass fiber were equal regardless of the heat treatment condition and the testing temperature. From the observation of surface crack, it was clarified that the mirror zone was the mark of surface flaw propagation and therefore it was suggested that the area of mirror zone doesn't have a direct effect on fiber strength.
KW - Brittle fracture
KW - Cryogenic temperature
KW - Fracture mechanics
KW - Glass fiber
UR - http://www.scopus.com/inward/record.url?scp=77956319022&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77956319022&partnerID=8YFLogxK
U2 - 10.1299/kikaia.76.652
DO - 10.1299/kikaia.76.652
M3 - Article
AN - SCOPUS:77956319022
SN - 0387-5008
VL - 76
SP - 652
EP - 654
JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
IS - 766
ER -