222 Time and Temperature Dependence of Flexural Strength of CFRP Laminates Using Heat-Resistant Resin

Author(s):  
Yozo Hamagami ◽  
Naoyuki Sekine ◽  
Masayuki Nakada ◽  
Yasushi Miyano
2003 ◽  
Vol 46 (3) ◽  
pp. 437-440 ◽  
Author(s):  
Yozo HAMAGAMI ◽  
Naoyuki SEKINE ◽  
Masayuki NAKADA ◽  
Yasushi MIYANO

1991 ◽  
Vol 40 (449) ◽  
pp. 192-198
Author(s):  
Yasushi MIYANO ◽  
Yukio TAKAMURA ◽  
Megumu SUZUKI ◽  
Michihiro MOHRI

1986 ◽  
Vol 78 ◽  
Author(s):  
T. W. Coyle ◽  
R. P. Ingel ◽  
P. A. Willging

ABSTRACTThe flexural strength and the single edge notch beam fracture toughness of undoped ZrO2 crystals, grown by the skull melting technique, were examined from room temperature to 1400°C. On heating the toughness increased with test temperature to a maximum of 4.0 MPajm at 1225°C then gradually decreased to 2.6 MPa/m. Upon cooling after a 20 minute hold at 1250°C an increase in toughness to 5 MPa/m was observed at 1200°C; upon cooling to lower temperatures Kic gradually diminished. The loaddeflection curves for the flexural strength tests showed marked nonlinearity before failure for samples tested on cooling. The temperature dependence of the apparent yield stress suggests that initial yielding occurs by slip above 1200°C but that from 1200°C to 1050°C the observed yielding is due to stress induced tetragonal to monoclinic transformation.


2003 ◽  
Vol 46 (3) ◽  
pp. 467-472 ◽  
Author(s):  
Hisanori FUJIEDA ◽  
Naoyuki SEKINE ◽  
Masayuki NAKADA ◽  
Yasushi MIYANO ◽  
Akira KURAISHI ◽  
...  

2002 ◽  
Vol 18 (7) ◽  
pp. 558-560 ◽  
Author(s):  
J Lenz ◽  
M Thies ◽  
P Wollwage ◽  
K Schweizerhof

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