scholarly journals The Influence of the Fastener Hole Preparation Method on the Fastener Pull-Through Process in a Carbon Composite

2017 ◽  
Vol 2017 (1) ◽  
pp. 45-53
Author(s):  
Maciej Karny
Keyword(s):  
Carbon Fibre ◽  
Epoxy Resin ◽  
Preparation Method ◽  
Uv Light ◽  
Failure Mechanisms ◽  
Carbon Composite ◽  
Fastener Hole ◽  
Plate Production ◽  
Pull Through ◽  
Special Fibre

Abstract This article studies the pull-through resistance of a titanium carbon fibre-epoxy resin laminate fastener. Coupons with fastener holes made with different methods were compared – drilled, milled on a CNC plotter and special fibre application during laminate production. The tests were conducted according to the ASTM D7332 test standard. The studies showed that the fastener hole preparation method impacts the laminate’s resistance to fastener pull-through. Coupons with holes made with standard (drilling and milling) methods showed fastener pull-through resistance higher, on average, by 6.5% than in coupons with holes placed during plate production. Fastener work to rupture was also higher for coupons with milled and drilled holes. Microscopic observations in UV-light, using a fluorescent penetrant, showed differences in failure mechanisms between individual coupons, especially the lack of fibres in the 0° direction, in immediate vicinity to a hole prepared during laminate application.

Rebubbling rate in preloaded versus surgeon prepared DSAEK

2021 ◽  
pp. 112067212110143
Author(s):  
Luca Pagano ◽  
Kunal A Gadhvi ◽  
Giulia Coco ◽  
Matthew Fenech ◽  
Mitchell Titley ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Statistical Difference ◽  
Preparation Method ◽  
Eye Bank ◽  
Eye Banks ◽  
Corrected Visual Acuity ◽  
Detachment Rate ◽  
Pull Through ◽  
Graft Diameter ◽  
Best Corrected Visual Acuity

Purpose: To compare the clinical outcomes of eye bank preloaded Descemet stripping automated endothelial keratoplasty (DSAEK) grafts and surgeon prepared. Methods: In this retrospective study, the data were obtained from two groups (a) surgeon cut DSAEK where tissue was prepared by the surgeon immediately before surgery, and (b) preloaded DSAEK tissue shipped to the surgeon after preparation by the eye bank. Standard DSAEK preparations using Moria microkeratome with single pass method were performed. For the tissues prepared by the eye banks, they were preloaded in an iGlide device and shipped in transport media. Standard DSAEK surgery using bimanual pull-through technique was performed for all the grafts. Air was used as a tamponade. Main outcome measures included best corrected visual acuity (BCVA) and rebubbling rate. Result: Out of 107 eyes of 101 patients that underwent DSAEK surgery, 33 tissues were prepared by the surgeon (sc-DSAEK), while 74 were prepared by the eye bank (pl-DSAEK). sc-DSAEK showed a rebubbling rate of 9.1%, compared to the 16.2% for the preloaded DSAEK ( p = 0.11). There was no statistical difference in postoperative BCVA between the two groups. Logistic regression analysis showed no association between detachment rate and cataract surgery, graft preparation method, graft diameter and reason for graft. Conclusion: Preloaded grafts have similar rebubbling rate and visual acuity achieved compared with surgeon prepared grafts.

A carbon fibre-reinforced epoxy resin intramedullary nail

1993 ◽  
Vol 12 (18) ◽  
pp. 1473-1474 ◽  
Author(s):  
J. Dowell ◽  
N. L. Hancox ◽  
R. J. Lee ◽  
G. M. Wells
Keyword(s):  
Carbon Fibre ◽  
Epoxy Resin ◽  
Intramedullary Nail

scholarly journals Photocatalytic Degradation of Methylene Blue under UV Light Irradiation on Prepared CarbonaceousTiO2

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Zatil Amali Che Ramli ◽  
Nilofar Asim ◽  
Wan N. R. W. Isahak ◽  
Zeynab Emdadi ◽  
Norasikin Ahmad-Ludin ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
In Situ Polymerization ◽  
Uv Light ◽  
Carbon Composite ◽  
Light Irradiation ◽  
Uv Light Irradiation ◽  
Transmission Electron ◽  
Vis Spectroscopy

This study involves the investigation of altering the photocatalytic activity of TiO2using composite materials. Three different forms of modified TiO2, namely, TiO2/activated carbon (AC), TiO2/carbon (C), and TiO2/PANi, were compared. The TiO2/carbon composite was obtained by pyrolysis of TiO2/PANi prepared by in situ polymerization method, while the TiO2/activated carbon (TiO2/AC) was obtained after treating TiO2/carbon with 1.0 M KOH solution, followed by calcination at a temperature of 450°C. X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FTIR), thermogravimetric analysis (TG-DTA), Brunauer-Emmet-Teller (BET), and UV-Vis spectroscopy were used to characterize and evaluate the prepared samples. The specific surface area was determined to be in the following order: TiO2/AC > TiO2/C > TiO2/PANi > TiO2(179 > 134 > 54 > 9 m2 g−1). The evaluation of photocatalytic performance for the degradation of methylene blue under UV light irradiation was also of the same order, with 98 > 84.7 > 69% conversion rate, which is likely to be attributed to the porosity and synergistic effect in the prepared samples.

Three-dimensionally ordered mesoporous multicomponent (Ni, Mo) metal oxide/N-doped carbon composite with superior Li-ion storage performance

Nanoscale ◽  
2018 ◽  
Vol 10 (39) ◽  
pp. 18734-18741 ◽  
Author(s):  
Se Hwan Oh ◽  
Jin Koo Kim ◽  
Yun Chan Kang ◽  
Jung Sang Cho
Keyword(s):  
Metal Oxides ◽  
Preparation Method ◽  
Carbon Composite ◽  
Pyrolysis Process ◽  
Storage Performance ◽  
Simple Preparation ◽  
Ordered Mesoporous ◽  
Ion Storage ◽  
Li Ion ◽  
Spray Pyrolysis Process

A simple preparation method of mesoporous multicomponent metal oxides containing Ni and Mo components with N-doped carbon by spray pyrolysis process is introduced.

Investigations on neutron irradiated 3D carbon fibre reinforced carbon composite material

2018 ◽  
Vol 502 ◽  
pp. 276-281 ◽  
Author(s):  
Ramani Venugopalan ◽  
V.D. Alur ◽  
A.K. Patra ◽  
R. Acharya ◽  
D. Srivastava
Keyword(s):  
Composite Material ◽  
Carbon Fibre ◽  
Carbon Composite ◽  
Carbon Composite Material
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