TY - JOUR
T1 - Anisotropy control on recycling molding material and appearance of effective fiber orientation on Fatigue Crack Propagation property by mesoscopic factor (Anisotropy control by tetrapod-shaped whisker and aramide fiber)
AU - Fukunaga, Hisao
AU - Suzuki, Hideto
AU - Matsumura, Akiko
AU - Haraguchi, Tadao
PY - 1997
Y1 - 1997
N2 - The fatigue reliability of recycled advanced fiber-reinforced thermoplastic (FRTP) resin was examined, with a focus on the effects of the mesoscopic factor on the Fatigue Crack Propagation property. The main results were as follows: (1) In spite of the low weight percentage of carbon fiber, the rate of decrease the FCP property of PPS/ZW+CF materials was similar to that for PPS/GF materials with high weight percentages of glass fibers. The rate of decrease of the mechanical property of PA46/AF materials were low, but the rate of decrease of the FCP property of PA46/AF materials was very high remarkably. (2) The carbon fibers in PPS/ZW+CF materials were not oriented in one direction because of the three dimensionality of the zinc oxide whiskers in the molding process, and effective orientation of the carbon fibers appeared on FCP resistance. (3) The value of da/dN was constant on the FCP property of PPS/ZW+CF materials at low stress intensity factor range (ΔK) because of microcrack initiation. (4) Aramide fibers (AF) were not broken and not unidirectionally oriented because of their flexibility during molding at high temperatures. The FCP property of recycled PA46/AF materials was influenced by the winding shape of the AF.
AB - The fatigue reliability of recycled advanced fiber-reinforced thermoplastic (FRTP) resin was examined, with a focus on the effects of the mesoscopic factor on the Fatigue Crack Propagation property. The main results were as follows: (1) In spite of the low weight percentage of carbon fiber, the rate of decrease the FCP property of PPS/ZW+CF materials was similar to that for PPS/GF materials with high weight percentages of glass fibers. The rate of decrease of the mechanical property of PA46/AF materials were low, but the rate of decrease of the FCP property of PA46/AF materials was very high remarkably. (2) The carbon fibers in PPS/ZW+CF materials were not oriented in one direction because of the three dimensionality of the zinc oxide whiskers in the molding process, and effective orientation of the carbon fibers appeared on FCP resistance. (3) The value of da/dN was constant on the FCP property of PPS/ZW+CF materials at low stress intensity factor range (ΔK) because of microcrack initiation. (4) Aramide fibers (AF) were not broken and not unidirectionally oriented because of their flexibility during molding at high temperatures. The FCP property of recycled PA46/AF materials was influenced by the winding shape of the AF.
UR - http://www.scopus.com/inward/record.url?scp=0031221128&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031221128&partnerID=8YFLogxK
U2 - 10.1299/kikaia.63.1880
DO - 10.1299/kikaia.63.1880
M3 - Article
AN - SCOPUS:0031221128
VL - 63
SP - 1880
EP - 1885
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
SN - 0387-5008
IS - 613
ER -