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Titolo:
MOISTURE EFFECTS ON MODE-II DELAMINATION BEHAVIOR OF CARBON EPOXY COMPOSITES/
Autore:
ZHAO SX; GAEDKE M;
Indirizzi:
BEIJING UNIV AERONAUT & ASTRONAUT,DEPT MAT SCI & ENGN BEIJING 100083 PEOPLES R CHINA DLR,INST STRUCT MECH D-38108 BRAUNSCHWEIG GERMANY
Titolo Testata:
Advanced composite materials
fascicolo: 4, volume: 5, anno: 1996,
pagine: 291 - 307
SICI:
0924-3046(1996)5:4<291:MEOMDB>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERLAMINAR FRACTURE; GRAPHITE EPOXY; TOUGHNESS; PEEK;
Keywords:
DELAMINATION; STRAIN ENERGY RELEASE RATE; MOISTURE EFFECT; CARBON/EPOXY; COMPOSITES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
S.X. Zhao e M. Gaedke, "MOISTURE EFFECTS ON MODE-II DELAMINATION BEHAVIOR OF CARBON EPOXY COMPOSITES/", Advanced composite materials, 5(4), 1996, pp. 291-307

Abstract

Moisture effects on Mode II interlaminar fracture in T300/914C and T300/M10 carbon/epoxy composites were investigated by using ENF specimens exposed to different hygrothermal conditions. Crack growth behavior,interlaminar shear strength, glass transition temperature and fractographs of the materials were examined toward establishing the possible mechanisms of moisture effects. It was found that Mode LI fracture toughness of T300/M10 is more sensitive to moisture than that of T300/914C. For T300/914C, the matrix was plasticized by water and thus G(IIc) increased slightly. With further moisture absorption, swelling action weakened the interface and led to reduction of fracture toughness. ForT300/M10, moisture primarily weakened the interfacial strength and resulted in decrease in G(IIc). It seemed that water plasticization contributed to the enhancement of delamination toughness of the fiber-matrix system with strong interface, and degraded the toughness of the system with weak interface due to a decrease of the fracture area. However, for both of the two systems, the swelling action, which weakened the interface bond, always reduced the delamination resistance.

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Documento generato il 30/11/20 alle ore 00:43:58