On-line cure monitoring and viscosity measurement of carbon fiber epoxy composite materials

1993 ◽  
Vol 37 (1-4) ◽  
pp. 405-416 ◽  
Author(s):  
Jin-Soo Kim ◽  
Dai Gil Lee
1992 ◽  
Vol 32 (3) ◽  
pp. 553-570 ◽  
Author(s):  
Ki Soo Kim ◽  
Dai Gil Lee ◽  
Yoon Keun Kwak ◽  
Suk Namgung

Author(s):  
Guo Liu ◽  
Xiuyun Wang ◽  
Minxu Lu

For the past decade composite materials has been widely accepted as a repair method for damaged gas and liquid transmission pipelines. Composite wrap can serve as an alternative to the traditional pipeline repair practices such as pipeline replacement or the installation of full-encirclement steel split sleeves. A carbon-fiber/epoxy composite wrap system has been developed to rehabilitate and restore original operational strength to corroded and eroded pipelines and piping systems. This system is a permanent, cost-effective pipeline repair technology, suitable for non-leaking defects such as pits, dents, gouges, and external corrosion. This composite wrap system has been widely used in China for rehabilitations of numerous gas and petroleum pipelines.


1993 ◽  
Vol 25 (1-4) ◽  
pp. 313-324 ◽  
Author(s):  
Dai Gil Lee ◽  
Kwang Seop Jeong ◽  
Ki Soo Kim ◽  
Yoon Keun Kwak

2021 ◽  
Vol 06 (02) ◽  
pp. 97-104
Author(s):  
Zaka Salimov Zaka Salimov ◽  
Matanat Jabiyeva Matanat Jabiyeva

In this study, the preparation and characterization of carbon fiber reinforced epoxy composites are aimed at today's increasing use of composite materials. In this study, composite materials consisting of unidirectional carbon fiber-epoxy resin were prepared and the effects of fiber inclination angle on layered epoxy composite materials were investigated using various characterization techniques. Composite materials were prepared by autoclave method. At the stage of characterization of prepared composite materials Scanning electron microscopy (SEM) has been applied for tensile, compression tests and characterization of fracture surfaces to determine the mechanical properties. Keywords: Carbon fiber,epoxy resin,polymer composite,mechanical properties.


2020 ◽  
Vol 9 (1) ◽  
pp. 1170-1182
Author(s):  
Muhammad Razlan Zakaria ◽  
Hazizan Md Akil ◽  
Mohd Firdaus Omar ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
Aslina Anjang Ab Rahman ◽  
...  

AbstractThe electrospray deposition method was used to deposit carbon nanotubes (CNT) onto the surfaces of woven carbon fiber (CF) to produce woven hybrid carbon fiber–carbon nanotubes (CF–CNT). Extreme high-resolution field emission scanning electron microscopy (XHR-FESEM), X-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared spectroscopy (FT-IR) were used to analyze the woven hybrid CF–CNT. The results demonstrated that CNT was successfully and homogenously distributed on the woven CF surface. Woven hybrid CF–CNT epoxy composite laminates were then prepared and compared with woven CF epoxy composite laminates in terms of their flexural and dielectric properties. The results indicated that the flexural strength, flexural modulus and dielectric constant of the woven hybrid CF–CNT epoxy composite laminates were improved up to 19, 27 and 25%, respectively, compared with the woven CF epoxy composite laminates.


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