Spray Deposition Effect on Abscission Efficacy of CMN-Pyrazole in Harvesting Oranges

Author(s):  
M Salyani ◽  
E BenSalem ◽  
JD Whitney
2019 ◽  
Vol 58 (1) ◽  
pp. 147-158
Author(s):  
Bandi Venkata Ramana Reddy ◽  
Saikat Ranjan Maity ◽  
Krishna Murari Pandey

Abstract A review on the characterization of mechanical, metallurgical, porosity, tribological and corrosion properties of spray deposited Al-alloys are presented in this paper. Al-alloys are potentially used in various applications specifically in bearing materials, aerospace due to low weight to high strength, proper lubrication, excellent wear and corrosion resistance. Al alloys being processed through spray forming technology, which possesses lower processing steps than the other conventional methods like ingot and powder metallurgy. Characterization of Al alloys spray deposits is carried out before and after mechanical processes to know their behaviour. Reviewed the characterization deportment of Al-alloys before and after spray deposition, effect of mechanical process like cold rolling, extrusion, aging, hot rolling, hot extrusion etc. and porosity on the metallurgical, hardness, tensile strength, elongation, tribological and corrosion properties.


2020 ◽  
Vol 7 (2) ◽  
pp. E19-E25
Author(s):  
W. J. W. J.

Titanium alloy is the main structural material of the aerospace system component. About 75 % of titanium and titanium alloys in the world are used in the aerospace industry. Hence, it is of great significance to study the surface deposition characteristics by cold spraying technology, taking Ti-6Al-4V alloy as an example, smoothed particle hydrodynamics (SPH) method in Abaqus/Explicit was used to spray aluminum, Ti-6Al-4V, copper, tungsten alloy (W alloy) and titanium particles onto Ti-6Al-4V substrate. The simulation results show that the deposition effect is good over 600 m/s, and higher energy is obtained for Ti-6Al-4V particles with the same properties as the matrix. For aluminum, Ti-6Al-4V, copper, W alloy, and titanium particles with different properties, under the same initial speed condition, the greater the density of the material, the deeper the foundation pit. W Alloy has the largest initial kinetic energy, the deepest foundation pit, and better surface bonding performance. The aluminum particle has the smallest initial kinetic energy, the shallowest foundation pit. However, the deposition effect of multiple aluminum particles has not improved. The collision process’s kinetic energy is transformed into internal energy, frictional dissipation, and viscous dissipation. Besides, the internal energy is mainly plastic dissipation and strain energy. Therefore, it is recommended to use Ti-6Al-4V, copper, nickel, W alloy, and titanium particles for different occasions, such as Ti-6Al-4V substrate surface restorative and protective coatings. Pure aluminum particles are not recommended.


2020 ◽  
Vol 140 (4) ◽  
pp. 179-185
Author(s):  
Hiroshi Yamauchi ◽  
Yugo Okada ◽  
Takashi Tadokoro ◽  
Kazuhiro Kudo

2015 ◽  
Vol E98.C (2) ◽  
pp. 80-85
Author(s):  
Hiroshi YAMAUCHI ◽  
Shigekazu KUNIYOSHI ◽  
Masatoshi SAKAI ◽  
Kazuhiro KUDO

2019 ◽  
Author(s):  
Thomas Emmler ◽  
Charline Wolpert ◽  
Mauricio Schieda ◽  
Maria T. Villa Vidaller ◽  
Stefen Fengler ◽  
...  

2012 ◽  
Vol 28 (9) ◽  
pp. 646-656 ◽  
Author(s):  
T K Thiyagarajan ◽  
P V Ananthapadmanabhan ◽  
K P Sreekumar ◽  
Y Chakravarthy ◽  
A K Das ◽  
...  

Author(s):  
Yun Zhao ◽  
Bingbing Chen ◽  
Shuhui Xia ◽  
Jianyong Yu ◽  
Jianhua Yan ◽  
...  

In this work, we report an interesting selective nucleation and targeted deposition effect of lithium in F-enriched macropores of carbon nanofibers.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
A. M. Zamarayeva ◽  
K. Gopalan ◽  
J. R. Corea ◽  
M. Z. Liu ◽  
K. Pang ◽  
...  

AbstractWe have developed a process for fabricating patient specific Magnetic Resonance Imaging (MRI) Radio-frequency (RF) receive coil arrays using additive manufacturing. Our process involves spray deposition of silver nanoparticle inks and dielectric materials onto 3D printed substrates to form high-quality resonant circuits. In this paper, we describe the material selection and characterization, process optimization, and design and testing of a prototype 4-channel neck array for carotid imaging. We show that sprayed polystyrene can form a low loss dielectric layer in a parallel plate capacitor. We also demonstrate that by using sprayed silver nanoparticle ink as conductive traces, our devices are still dominated by sample noise, rather than material losses. These results are critical for maintaining high Signal-to-Noise-Ratio (SNR) in clinical settings. Finally, our prototype patient specific coil array exhibits higher SNR (5 × in the periphery, 1.4 × in the center) than a commercially available array designed to fit the majority of subjects when tested on our custom neck phantom. 3D printed substrates ensure an optimum fit to complex body parts, improve diagnostic image quality, and enable reproducible placement on subjects.


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