Factors Affecting Electrochemical Honing of SS-316

Electrochemical Honing (ECH) is a process of precision finishing of functional surfaces with the use of the electrical and mechanical energy. It is reported that the 90 percent of the material is removed by electrochemical machining (ECM) process and remaining 10 percent by mechanical scrubbing, which shows the electrical energy is the main constituent in the ECH process. Basically, electrical energy is combined with chemical to form an electrolysis dissolution to remove material from the workpiece surface. This work presents a study for the factors affecting the electrochemical honing of SS-316 turned surfaces, especially the processing time and electrolyte composition. The percentage improvement in surface roughness (Ra, Rt) and out-of-roundness (OOR) as a monitored output of ECH were determined. The results are finally furnished with the aim to generalize a useful guideline for the user to enable proper selection of conditions for obtaining good surface quality.

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Triboelectric nanogenerators (TENG): Factors affecting its efficiency and applications

Facta universitatis - series Electronics and Energetics ◽

10.2298/fuee2102157a ◽

2021 ◽

Vol 34 (2) ◽

pp. 157-172

Author(s):

Deepak Anand ◽

Singh Sambyal ◽

Rakesh Vaid

Keyword(s):

Large Scale ◽

Review Paper ◽

Mechanical Energy ◽

Electrical Energy ◽

Wearable Electronics ◽

Factors Affecting ◽

Electrostatic Induction ◽

Triboelectric Nanogenerators ◽

Human Motions ◽

Great Scope

The demand for energy is increasing tremendously with modernization of the technology and requires new sources of renewable energy. The triboelectric nanogenerators (TENG) are capable of harvesting ambient energy and converting it into electricity with the process of triboelectrification and electrostatic-induction. TENG can convert mechanical energy available in the form of vibrations, rotation, wind and human motions etc., into electrical energy there by developing a great scope for scavenging large scale energy. In this review paper, we have discussed various modes of operation of TENG along with the various factors contributing towards its efficiency and applications in wearable electronics.

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An outline of the problem of pelvic organ prolapse, including dietary and physical activity prophylaxis

Pielegniarstwo XXI wieku / Nursing in the 21st Century ◽

10.2478/pielxxiw-2021-0015 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Magdalena Pisarska-Krawczyk ◽

Grażyna Jarząbek-Bielecka ◽

Małgorzata Mizgier ◽

Katarzyna Plagens-Rotman ◽

Zbigniew Friebe ◽

...

Keyword(s):

Physical Activity ◽

Pelvic Organ Prolapse ◽

Pelvic Floor ◽

Surgical Procedures ◽

Pelvic Organ ◽

Proper Selection ◽

Pelvic Floor Exercises ◽

Factors Affecting ◽

Selection Of ◽

Female Genital

Abstract Introduction. In gynecology, the proper selection of diagnostic and therapeutic methods, including conservative and/or surgical procedures, plays an important role. An outline of these issues is presented in the context of static disorders of female genital organs. The period of a woman’s life predisposing to pelvic organ prolapse is menopause, especially the period of senium, which is associated with hypoestrogenism. An analysis of the factors affecting the risk of disorders of genital statics indicates that pelvic floor exercises and a proper diet, which does not lead to constipation or obesity, are important in the prevention of genital static disorders. Aim. The aim of the study is to analyze the problem of disorders of the statics of genital organs, which is significant in nursing and medicine, in the light of the literature data.

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Experimental and Simulative Study on Hydraulic Energy Grading Control System in the Process of Wave Energy Conversion

Journal of Computational and Theoretical Nanoscience ◽

10.1166/jctn.2019.8366 ◽

2019 ◽

Vol 16 (9) ◽

pp. 3683-3691

Author(s):

Wen-Bin Lai ◽

De-Tang Li ◽

Yong-He Xie

Keyword(s):

Control System ◽

Wave Energy ◽

Mechanical Energy ◽

Electrical Energy ◽

Transmission System ◽

Conversion Process ◽

Wave Condition ◽

Factors Affecting ◽

Development And Utilization ◽

The Stability

In the development and utilization of wave energy, the wave energy is first converted to mechanical energy, then to hydraulic energy, and finally to electrical energy. Due to the instability and randomness of the wave energy, which makes the energy easily fluctuate during the conversion process. In this paper, an oscillating wave power generation device based on hydraulic transmission system is taken as the study object, and the factors affecting the stability of the hydraulic transmission system are studied by model experiment and AMESim simulation. The results of the test show that the stability can be improved by optimizing the parameters in the hydraulic transmission system according to different wave conditions; However, the optimized hydraulic system can only ensure that the wave energy within a certain wave condition can be stably converted; when the wave condition changes greatly, the hydraulic transmission system is still easy to cause fluctuations. In addition, a Hydraulic Energy Grading Control System is proposed, which further improves the stability of the wave energy during the conversion process.

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MAINTENANCE OF FILTRATION AND CAPACITIVE RESERVOIR PROPERTIES DURING TEMPORARY ISOLATION

Oil and Gas Studies ◽

10.31660/0445-0108-2017-4-58-66 ◽

2017 ◽

pp. 58-66 ◽

Cited By ~ 1

Author(s):

R. A. Gasumov ◽

S. V. Kostyukov ◽

R. R. Gasumov ◽

V. T. Lukyanov ◽

S. A. Dudayev

Keyword(s):

Clay Minerals ◽

Fractional Composition ◽

Clay Material ◽

Reservoir Properties ◽

Proper Selection ◽

Factors Affecting ◽

Polymeric Reagents ◽

Functional Additives ◽

Material Swelling ◽

Selection Of

The article provides the analysis of factors affecting the reservoir properties (filtration and capacity) during repair works. It is revealed that the maintenance of filtration and capacitive reservoir properties is ensured by high-quality blocking and unblocking the reservoir, as well as by prevention of clay material swelling. Solution of these problems is possible through proper selection of the bridging agents (nature, type and fractional composition) used in the blocking composition, and various functional additives (salts, polymeric reagents and surfactants). Furthermore, the reasons of clay minerals swelling and various ways to prevent this process are analyzed. It is determined the peculiarities of clay minerals structure are essential for their properties, and in particular, their ability to swell.

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Reduction of structural vibrations with the piezoelectric stacks ring

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-209384 ◽

2020 ◽

Vol 64 (1-4) ◽

pp. 729-736

Author(s):

Jincheng He ◽

Xing Tan ◽

Wang Tao ◽

Xinhai Wu ◽

Huan He ◽

...

Keyword(s):

Vibration Control ◽

Mechanical Energy ◽

Electrical Energy ◽

Structural Vibrations ◽

Rotor Systems ◽

Fea Model ◽

Piezoelectric Stacks ◽

Shunt Damping ◽

Reduction Effect ◽

Euler Bernoulli Beam

It is known that piezoelectric material shunted with external circuits can convert mechanical energy to electrical energy, which is so called piezoelectric shunt damping technology. In this paper, a piezoelectric stacks ring (PSR) is designed for vibration control of beams and rotor systems. A relative simple electromechanical model of an Euler Bernoulli beam supported by two piezoelectric stacks shunted with resonant RL circuits is established. The equation of motion of such simplified system has been derived using Hamilton’s principle. A more realistic FEA model is developed. The numerical analysis is carried out using COMSOL® and the simulation results show a significant reduction of vibration amplitude at the specific natural frequencies. Using finite element method, the influence of circuit parameters on lateral vibration control is discussed. A preliminary experiment of a prototype PSR verifies the PSR’s vibration reduction effect.

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16. Proper Selection of Wipe Media for Hexavalent Chromium

10.3320/1.2757841 ◽

2003 ◽

Author(s):

M. Eide

Keyword(s):

Hexavalent Chromium ◽

Proper Selection ◽

Selection Of

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Meriel Talbot and the Society for the Overseas Settlement of British Women, 1919–1937

Britain and the World ◽

10.3366/brw.2017.0258 ◽

2017 ◽

Vol 10 (1) ◽

pp. 32-52

Author(s):

Bonnie White

Keyword(s):

Domestic Service ◽

Agricultural Workers ◽

British Government ◽

Early Failure ◽

Proper Selection ◽

Domestic Servants ◽

Female Workers ◽

Female Migrants ◽

Post War ◽

Selection Of

In 1917 the British government began making plans for post-war adjustments to the economy, which included the migration of surplus women to the dominions. The Society for the Overseas Settlement of British Women was established in 1920 to facilitate the migration of female workers to the dominions. Earlier studies have argued that overseas emigration efforts purposefully directed women into domestic service as surplus commodities, thus alleviating the female ‘surplus’ and easing economic hardships of the post-war period. This article argues that as Publicity Officer for the SOSBW, Meriel Talbot targeted women she believed would be ideal candidates for emigration, including former members of the Women's Land Army and affiliated groups. With the proper selection of female migrants, Talbot sought to expand work opportunities for women in the dominions beyond domestic service, while reducing the female surplus at home and servicing the connection between state and empire. Dominion authorities, whose demands for migrant labour vacillated between agricultural workers during the war years and domestic servants after 1920, disapproved of Talbot's efforts to migrate women for work in agriculture. Divergent policies led to the early failure of the SOSBW in 1923.

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