Fine Grained Au Films with Controllable Mechanical Strength By Pulse Plating for Micro-Electrical-Mechanical System Accelerometer

2016 ◽  
Keyword(s):  
Mechanical Strength ◽  
Mechanical System ◽  
Pulse Plating ◽  
Fine Grained ◽  
Micro Electrical Mechanical System

scholarly journals Effect of freeze-thaw cycles on mechanical strength of lime-treated fine-grained soils

2019 ◽  
Vol 21 ◽  
pp. 100281 ◽  
Author(s):  
Thi Thanh Hang Nguyen ◽  
Yu-Jun Cui ◽  
Valéry Ferber ◽  
Gontran Herrier ◽  
Tamer Ozturk ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Freeze Thaw ◽  
Fine Grained

Determining the Mechanical Strength of Ultra-Fine-Grained Metals

10.3791/61819 ◽  
2021 ◽  
Author(s):  
Jianing Xu ◽  
Yanju Wang ◽  
Jinyuan Yan ◽  
Bin Chen
Keyword(s):  
Mechanical Strength ◽  
Fine Grained

A study on the formation of hydrothermally prepared BaTiO3 particles

1992 ◽  
Vol 50 (1) ◽  
pp. 304-305
Author(s):  
Fatih Dogan ◽  
Jun Liu ◽  
Mehmet Sarikaya ◽  
Ilhan A. Aksay
Keyword(s):  
Aqueous Solution ◽  
Dielectric Constant ◽  
Low Temperature ◽  
Mechanical Strength ◽  
High Dielectric Constant ◽  
Fine Particles ◽  
Ferroelectric Material ◽  
Fine Grained ◽  
High Dielectric ◽  
Processing Techniques

BaTiO3 is an important ferroelectric material because of its high dielectric constant. To increase the optical transparency and mechanical strength, it is desirable to produce fine grained BaTiO3. Fine particles can be produced by colloidal processing techniques. In this case, however, it is usually necessary to synthesize monodispersed BaTiO3 particles with a predetermined diameter in a suspension. One widely used method to produce colloidal BaTiO3 particles is by reacting TiO2 particles with Ba(OH)2 in an aqueous solution at a moderately low temperature, i.e.,T < 100 °C.

Sensing Flow Separation on a Circular Cylinder by Micro-Electrical-Mechanical-System Thermal-Film Sensors

AIAA Journal ◽  
2006 ◽  
Vol 44 (10) ◽  
pp. 2224-2230 ◽  
Author(s):  
J. J. Miau ◽  
J. K. Tu ◽  
J. H. Chou ◽  
G. B. Lee
Keyword(s):  
Circular Cylinder ◽  
Mechanical System ◽  
Flow Separation ◽  
Micro Electrical Mechanical System

Evolution of Texture in Ultra-Fine Grained Ferrite through Warm-Rolling and Intercritical Annealing

2008 ◽  
Vol 584-586 ◽  
pp. 610-616
Author(s):  
Sandip Ghosh Chowdhury ◽  
B. Mahato ◽  
Hezio Rosa da Silva ◽  
Gustavo Gonçalves Lourenço ◽  
Dagoberto Brandão Santos
Keyword(s):  
Mechanical Strength ◽  
Intercritical Annealing ◽  
Tensile Tests ◽  
Warm Rolling ◽  
Ultrafine Grain ◽  
Low Carbon ◽  
Iron Carbides ◽  
Fine Grained ◽  
Subcritical Annealing ◽  
Good Relation

The ferrite grain size refining is the unique mechanism for increasing both mechanical strength and formability of steels. Steel with an ultra-fine ferrite grained structure must show a good relation between mechanical strength, ductility and toughness, while the low carbon content enhances good welding characteristics. The objective of this work is to investigate the influence of warm rolling on the evolution of texture in a microalloyed low carbon-manganese (0.11%C, 1.41%Mn, 0.028%Nb and 0.012%Ti) steel with ultra-fine grains produced through out quenching, warm rolling, followed by sub and intercritical annealing. The evolution of restoration process - recovery and recrystallization - was followed by optical and scanning microscopy. After subcritical annealing, the microstructure was formed by spheroidal iron carbides and a ferritic recovered matrix. Otherwise, after intercritical annealing, the microstructure was composed mainly by ultrafine grain polygonal ferrite, MA (martensite-austenite) constituent and carbides. The mechanical behaviour of the steel was evaluated using tensile tests. The mechanical properties have been correlated with the evolution of texture in the ultra-fine grained ferrites.

Comparison of integrated micro-electrical-mechanical system and piezoelectric accelerometers for machine condition monitoring

2006 ◽  
Vol 220 (8) ◽  
pp. 1135-1146 ◽  
Author(s):  
S Thanagasundram ◽  
F S Schlindwein
Keyword(s):  
Mechanical System ◽  
Condition Monitoring ◽  
Low Cost ◽  
New Technology ◽  
Vibrational Analysis ◽  
Fault Prediction ◽  
Machine Condition ◽  
Machine Condition Monitoring ◽  
Multiple Data ◽  
Micro Electrical Mechanical System

The design and implementation of instrumentation to collect real-time vibrational data from a quasi-steady state machine (a dry vacuum pump) for fault prediction diagnostics is presented. When simultaneous multiple data collection points are required on the same machinery, the use of conventional transducers such as piezoelectric accelerometers becomes impractical due to their price, as each needs an expensive associated charge amplifier. The use of inexpensive micromachined integrated micro-electrical-mechanical system accelerometers such as ADXL105 has been explored here as an alternative to piezoelectric accelerometers for obtaining reliable and predictable data for diagnostics. Surface micromachined accelerometers are a new technology and their usage for vibrational analysis has been conservative due to concerns over increased noise levels and tolerance to high temperatures. In this article, it is shown that such concerns can be allayed. The time and frequency domain vibration signatures obtained using both types of accelerometers are compared. The study shows that ADXL105 accelerometers can be an effective alternative low-cost high-quality solution for machine condition monitoring.

Application of an image management system in microscopy

1992 ◽  
Vol 50 (2) ◽  
pp. 1052-1053
Author(s):  
Richard S. Chemock
Keyword(s):  
Data Storage ◽  
Cost Savings ◽  
Image Data ◽  
Analytical Techniques ◽  
Operational Mode ◽  
Fine Grained ◽  
Image Recording ◽  
Primary Output ◽  
Capacity Data ◽  
Image Management System

One of the most common tasks in a typical analysis lab is the recording of images. Many analytical techniques (TEM, SEM, and metallography for example) produce images as their primary output. Until recently, the most common method of recording images was by using film. Current PS/2R systems offer very large capacity data storage devices and high resolution displays, making it practical to work with analytical images on PS/2s, thereby sidestepping the traditional film and darkroom steps. This change in operational mode offers many benefits: cost savings, throughput, archiving and searching capabilities as well as direct incorporation of the image data into reports.The conventional way to record images involves film, either sheet film (with its associated wet chemistry) for TEM or PolaroidR film for SEM and light microscopy. Although film is inconvenient, it does have the highest quality of all available image recording techniques. The fine grained film used for TEM has a resolution that would exceed a 4096x4096x16 bit digital image.

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