Alternative Cavity Design for Microwave Joining of Long Ceramic Tubes

1994 ◽  
Vol 347 ◽  
Author(s):  
Hussamaldin S. Sa'adaldin ◽  
W. Murray Black ◽  
Iftikhar Ahmad ◽  
Yong-Lai Tian ◽  
Richard Silberglitt
Keyword(s):  
Heating Rate ◽  
Single Mode ◽  
Preliminary Test ◽  
Rectangular Cavity ◽  
Test Results ◽  
Uniform Heating ◽  
Ceramic Samples ◽  
Cavity Design

ABSTRACTA new single mode applicator has been designed and fabricated to provide effective and nearly uniform heating of long ceramic tubes or rods at 2.45 GHz. The applicator is made of two double mitered waveguide corners. A comparison between the new cavity and a rectangular cavity has been carried out to heat various ceramic samples. Results show a significant improvement in the heating rate as well as the reduction of the power needed to attain a given temperature. This paper describes the preliminary test results of the new cavity and the potential to achieve joining of long tubes or rods.

Deterioration of Mechanical Properties of High-Strength Pumpcrete after Exposure to High Temperatures

2010 ◽  
Vol 168-170 ◽  
pp. 564-569
Author(s):  
Guang Lin Yuan ◽  
Jing Wei Zhang ◽  
Jian Wen Chen ◽  
Dan Yu Zhu
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Heating Rate ◽  
High Strength Concrete ◽  
Heating Temperature ◽  
High Strength ◽  
Air Cooling ◽  
Test Results ◽  
Strength Deterioration ◽  
Residual Compressive Strength

This paper makes an experimental study of mechanical properties of high-strength pumpcrete under fire, and the effects of heating rate, heating temperature and cooling mode on the residual compressive strength(RCS) of high-strength pumpcrete are investigated. The results show that under air cooling, the strength deterioration speed of high-strength concrete after high temperature increases with the increase of concrete strength grade. Also, the higher heating temperature is, the lower residual compressive strength value is. At the same heating rate (10°C/min), the residual compressive strength of C45 concrete after water cooling is a little higher than that after air cooling; but the test results are just the opposite for C55 and C65 concrete. The strength deterioration speed of high-strength concrete after high temperature increases with the increase of heating rate, but not in proportion. And when the heating temperature rises up between 200°C and 500°C, heating rate has the most remarkable effect on the residual compressive strength of concrete. These test results provide scientific proofs for further evaluation and analysis of mechanical properties of reinforced-concrete after exposure to high temperatures.

Effect of uniform heating rate on the nature of thermoluminescence of glass

1963 ◽  
Vol 20 (9) ◽  
pp. 476-477
Author(s):  
R. V. Lipchanskaya ◽  
V. S. Aksenov
Keyword(s):  
Heating Rate ◽  
Uniform Heating

Assessment of Heating Rate and Non-uniform Heating in Domestic Microwave Ovens

2012 ◽  
Vol 46 (4) ◽  
pp. 229-240 ◽  
Author(s):  
Krishnamoorthy Pitchai ◽  
Sohan L. Birla ◽  
David Jones ◽  
Jeyamkondan Subbiah
Keyword(s):  
Heating Rate ◽  
Uniform Heating

scholarly journals Flame Spraying of Aluminum Coatings Reinforced with Particles of Carbonaceous Materials as an Alternative for Laser Cladding Technologies

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3467 ◽  
Author(s):  
Artur Czupryński
Keyword(s):  
Laser Cladding ◽  
Carbon Materials ◽  
High Strength ◽  
Preliminary Test ◽  
Flame Spraying ◽  
Test Results ◽  
Carbonaceous Materials ◽  
Aluminum Coatings ◽  
Cylinder Liners ◽  
Near Future

The article presents results of the preliminary research of mechanical properties of flame-sprayed aluminum coatings reinforced with carbon materials made on the construction steel S235J0 substrate. For reinforcement the following carbon materials were used: carbon nanotubes Nanocyl NC 7000 (0.5 wt.% and 1 wt.%) and carburite (0.5 wt.%). The properties evaluation was made using metallographic macroscope and microscope, chemical composition, microhardness, abrasion and erosion resistance studies. The obtained results were compared with aluminum powder coatings (EN AW 1000 series). It was proved that the flame spraying of aluminum coatings reinforced with particles of carbonaceous materials can be an effective alternative for laser cladding technology. The preliminary test results will be successively extended by further experiments to contribute in the near future to develop innovative technologies, that can be implemented in the automotive industry for production of components with high strength, wear resistance, good thermal conductivity and low density, such as brake shoes, cylinder liners, piston rings and gears.

Pulsed single mode laser oscillation in a new coupled cavity design

1998 ◽  
Vol 146 (1-6) ◽  
pp. 173-176 ◽  
Author(s):  
D.J Binks ◽  
D.K Ko ◽  
L.A.W Gloster ◽  
T.A King
Keyword(s):  
Single Mode ◽  
Laser Oscillation ◽  
Mode Laser ◽  
Single Mode Laser ◽  
Cavity Design ◽  
Coupled Cavity
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