scholarly journals Combined Technology for the Parts Recovery Operating in Stress Factor Conditions

2020 ◽  
Vol 2020 ◽  
pp. 1-18
Author(s):  
Olena V. Berezshnaya ◽  
Valeriy D. Kassov ◽  
Eduard P. Gribkov
Keyword(s):  
Stress Concentration ◽  
High Frequency ◽  
Local Heating ◽  
Combined Treatment ◽  
Stress Factor ◽  
Treatment Conditions ◽  
Furnace Treatment ◽  
Deposited Metal ◽  
Insulation Effect ◽  
Low Sensitivity

The structural factor of samples microplasticity deposited with carbon steel construction tapes in connection with the different sensitivities of the deposited metal to stress concentration was investigated. The most favorable structure of the deposited layer, which is characterized by low sensitivity to stress concentration, is found. The combined technology of parts recovery modes operating in stress factor conditions is given. The covering agent composition, which allows to reduce the energy consumption during heat treatment of the deposited samples after treatment with high-frequency currents, to increase the thermal insulation effect approaching to the furnace treatment conditions, was developed. It was established that retarded cooling in the covering agent of deposited samples after local heating with high-frequency currents provides the increase in the average pressure ferrite during increase in the grain size. It was established that for parts operating under cyclic loading, the structure obtained as a result of combined treatment is the least sensitive to stress concentration.

Study on Practical FBG Acceleration System

2011 ◽  
Vol 346 ◽  
pp. 546-550
Author(s):  
Wei Guang Zhang ◽  
Jian Zhang
Keyword(s):  
System Application ◽  
High Frequency ◽  
High Sensitivity ◽  
Acceleration Measurement ◽  
Cross Sensitivity ◽  
Loop Control ◽  
Sensitivity Problem ◽  
Micro Vibration ◽  
Low Sensitivity ◽  
Close Loop Control

A micro vibration, high sensitivity FBG demodulation system with close loop control is presented. By introducing a close loop control, the difficulty in matched FBG making process is overcame. Further more, the FBG strain-temperature cross sensitivity problem is settled. And low sensitivity in high frequency of cantilever FBG accelerator is overcame either. An example of the system application in acceleration measurement is introduced.

scholarly journals Mechanical competence of ovariectomy-induced compromised bone after single or combined treatment with high-frequency loading and bisphosphonates

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
G. V. Camargos ◽  
P. Bhattacharya ◽  
G. H. van Lenthe ◽  
A. A. Del Bel Cury ◽  
I. Naert ◽  
...  
Keyword(s):  
High Frequency ◽  
Combined Treatment

scholarly journals The Principle of Formation of Metal-dielectric Micro-sized Metastructures

2020 ◽  
Vol 7 (4) ◽  
pp. 97-101
Author(s):  
A. A. Adzhibekov ◽  
◽  
A. A. Zhukov ◽  
O. A. Alekseev ◽  
◽  
...  
Keyword(s):  
Electromagnetic Radiation ◽  
High Frequency ◽  
Radiation Source ◽  
Power Level ◽  
Electromagnetic Signal ◽  
Dielectric Layers ◽  
Numerical Assessment ◽  
Deposited Metal ◽  
Alignment Marks

The principle of formation of layered metal-dielectric micro-sized metastructures, which are dielectric layers with deposited metal patterns, is proposed. The principle consists in the production of individual layers by photolithographic methods, followed by their assembly and alignment on a special installation using a source of high-frequency electromagnetic radiation with an antisymmetric field. The criterion for the accuracy of the alignment of layers is the power level of the received high-frequency electromagnetic signal at the output of the receiver, which fixes the field of the radiation source, scattered by the metal alignment marks applied to each matched layer. When applying the proposed principle, it is possible to combine optically opaque metaldielectric layers of metastructures, without the use of pins. A numerical assessment of the quality of layer alignment showed that the error of layer alignment when using a centimeter wavelength range for field sensing is no more than 3–4 µm.

scholarly journals Influence of high-frequency mechanical vibrations of the item on structure and wear resistance of Kh10R4G2S deposited metal

2016 ◽  
Vol 2016 (10) ◽  
pp. 22-27
Author(s):  
G.V. Pokhmurskaya ◽  
◽  
M.M. Student ◽  
A.A. Vojtovich ◽  
A.Z. Student ◽  
...  
Keyword(s):  
Wear Resistance ◽  
High Frequency ◽  
Mechanical Vibrations ◽  
Deposited Metal

Low sensitivity high-frequency active R filters

1976 ◽  
Vol 23 (11) ◽  
pp. 670-676 ◽  
Author(s):  
A. Mitra ◽  
V. Aatre
Keyword(s):  
High Frequency ◽  
Low Sensitivity

High-frequency repetitive transcranial magnetic stimulation in schizophrenia: a combined treatment and neuroimaging study

2004 ◽  
Vol 34 (7) ◽  
pp. 1157-1163 ◽  
Author(s):  
G. HAJAK ◽  
J. MARIENHAGEN ◽  
B. LANGGUTH ◽  
S. WERNER ◽  
H. BINDER ◽  
...  
Keyword(s):  
Depressive Symptoms ◽  
Transcranial Magnetic Stimulation ◽  
High Frequency ◽  
Magnetic Stimulation ◽  
Negative Symptoms ◽  
Repetitive Transcranial Magnetic Stimulation ◽  
Combined Treatment ◽  
Emission Computed Tomography ◽  
Positive Symptoms ◽  
Schizophrenic Patients

Background. Repetitive transcranial magnetic stimulation (rTMS) of frontal brain regions is under study as a non-invasive method in the treatment of affective disorders. Recent publications provide increasing evidence that rTMS may be useful in treating schizophrenia. Results are most intriguing, demonstrating a reduction of negative symptoms following high-frequency rTMS. In this context, disentangling of negative and depressive symptoms is of the utmost importance when understanding specific rTMS effects on schizophrenic symptoms.Method. Using a sham-controlled parallel design, 20 patients with schizophrenia were included in the study. Patients were treated with high-frequency 10 Hz rTMS over 10 days. Besides clinical ratings, ECD-SPECT (technetium-99 bicisate single photon emission computed tomography) imaging was performed before and after termination of rTMS treatment.Results. High-frequency rTMS leads to a significant reduction of negative symptoms combined with a trend for non-significant improvement of depressive symptoms in the active stimulated group as compared with the sham stimulated group. Additionally, a trend for worsening of positive symptoms was observed in the actively treated schizophrenic patients. In both groups no changes in regional cerebral blood flow could be detected by ECD-SPECT.Conclusions. Beneficial effects of high-frequency rTMS on negative and depressive symptoms were found, together with a trend for worsening positive symptoms in schizophrenic patients.

scholarly journals Combined Treatment Effect of High Frequency Therapy with Sharp-Toothed Eel Extract on Men's Skin

KSBB Journal ◽  
2011 ◽  
Vol 26 (3) ◽  
pp. 260-265
Author(s):  
Hyun-Ju No ◽  
Yoon-Soo Kim ◽  
Hyung-Gun Nam ◽  
Hyun-Jae Shin ◽  
Eun-Mi Ryu ◽  
...  
Keyword(s):  
Treatment Effect ◽  
High Frequency ◽  
Combined Treatment
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