Effects of Preform Structures on the Mechanical Properties, Fracture Behaviors and Thermophysical Properties of C/C Composites

2018 ◽  
Vol 54 (1) ◽  
pp. 97
Author(s):  
Shengyang PANG
Author(s):  
Seong-Min Lee ◽  
Sung-Sik Shin ◽  
Hong-Seok Song ◽  
Young-Tai Kho

The effect of carbon black, ultraviolet (UV) stabilizer and color pigment on the mechanical property of polyethylene (PE) has been investigated. The transition of fracture mode from ductile to brittle upon UV exposure is identified through microscopic examination of fracture surface. This transition is responsible for the degradation of mechanical properties. The carbon black doped PE shows excellent UV resistance regardless of the presence of UV stabilizer. The mechanical properties of the PE remained unchanged even after 50-days UV exposure. The ductile fracture mode is also maintained in this case. The addition of red color pigment exhibited a very poor UV resistance.


2005 ◽  
Vol 488-489 ◽  
pp. 753-758
Author(s):  
Wei Wu ◽  
C.M. Hong ◽  
Li Jia Chen ◽  
Yue Wang ◽  
Lin Yang ◽  
...  

High-temperature tensile and fracture behaviors of as-extruded ZK60 alloy were investigated. It was evident from the experiments that with decreasing temperature and increasing strain rate, the 0.2% offset yield strength and ultimate tensile strength of the alloy increased while the elongation to failure decreased. The flowing stress of as-extruded ZK60 alloy during plastic deformation was proportioned to the reciprocal of temperature. At the initial strain rate of 5×10-4s-1, the calculated active energy at 300°C was about 93.4 kJ/mol.


2001 ◽  
Vol 52 (3-4) ◽  
pp. 315-322 ◽  
Author(s):  
Asami Nakai ◽  
Takeru Ohki ◽  
Nobuo Takeda ◽  
Hiroyuki Hamada

2019 ◽  
Vol 6 (3) ◽  
pp. 18-00543-18-00543
Author(s):  
Tatsuya KIMURA ◽  
Hinako OZAKI ◽  
Michimasa UDA ◽  
Yoshio HASEGAWA ◽  
Akiko KOSHIZAKA ◽  
...  

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