start-ver=1.4
cd-journal=joma
no-vol=4
cd-vols=
no-issue=4
article-no=
start-page=577
end-page=583
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2019
dt-pub=20191014
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Mechanical and fatigue properties of long carbon fiber reinforced plastics at low temperature
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The mechanical properties of long unidirectional (UD) and crossply (CR) carbon fiber reinforced plastics (CFRPs) were investigated at a low temperature (?196?��C). The CFRPs were fabricated from 60?vol.% carbon fiber and epoxy resin. The bending strength of the UD-CFRP was approximately twice that of the CR-CFRP. The high strength of the UD-CFRP was directly attributed to the amount of carbon fiber oriented along the loading direction: 60% for UD-CFRP compared with 30% for CR-CFRP. The low-temperature (?196?��C) tensile and fatigue strengths of the UD-CFRP were over 1.5 times greater than those at room temperature (20?��C). This was attributed to the increased epoxy strength at low temperatures along with the internal compressive stress arising from the different thermal expansion coefficients of the carbon fiber and epoxy. Both the epoxy strength and internal compressive strength were employed as factors in a compound law to numerically estimate the low-temperature tensile strength. This work presents a systematic analysis for changes in the CFRP material properties at low temperatures.
en-copyright=
kn-copyright=

en-aut-name=OkayasuMitsuhiro
en-aut-sei=Okayasu
en-aut-mei=Mitsuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=TsuchiyaYuki
en-aut-sei=Tsuchiya
en-aut-mei=Yuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

affil-num=1
en-affil=Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=2
en-affil=Graduate School of Natural Science and Technology, Okayama University
kn-affil=
en-keyword=CFRP
kn-keyword=CFRP
en-keyword=Carbon fiber
kn-keyword=Carbon fiber
en-keyword=Tensile strength
kn-keyword=Tensile strength
en-keyword=Fatigue strength
kn-keyword=Fatigue strength
en-keyword=Low temperature
kn-keyword=Low temperature
END