scholarly journals Development of V-Shaped Beam on the Shock Resistance and Driving Frequency of Micro Quartz Tuning Forks Resonant Gyroscope

Micromachines ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1012
Author(s):  
Bing Bai ◽  
Cun Li ◽  
Yulong Zhao
Keyword(s):  
Simulation Software ◽  
Normal Operation ◽  
Harsh Environments ◽  
Driving Frequency ◽  
Half Cycle ◽  
Shaped Beam ◽  
Finite Element Analysis Simulation ◽  
Tuning Forks ◽  
Shock Resistance ◽  
Quartz Tuning Forks

The application of gyroscopes in harsh environments has always been a hot topic. As a high-quality material for manufacturing gyroscopes, quartz crystals need to be designed and optimized to meet the normal operation of gyroscopes in harsh environments. The Micro Electronics Mechanical System(MEMS) quartz tuning forks resonant gyroscope is one of the quartz gyroscopes. The elastic structure (V-shaped beam) between the anchor support point and tuning forks plays a vital role in the MEMS quartz tuning forks resonant gyroscope. This structure determines the natural frequency of the gyroscope, and more importantly, determines the shock resistance of the gyroscope structure. In this article, the MEMS quartz tuning forks gyroscope with different V-shaped beam thicknesses are simulated and analyzed by finite element analysis simulation software. After the modal analysis and shock simulation (the half-cycle sine shock pulse with amplitude of 1500 g (g is the acceleration of gravity) and duration of 2 ms in the six shock directions), the results show that when the beam thickness is 80 μm, the maximum stress is 94.721 MPa, which is less than the failure stress of quartz crystal. The gyroscope’s shock resistance is verified through shock testing.

scholarly journals A Novel Evaluation Method For Particle Deposition Measurement

Open Physics ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 927-934
Author(s):  
Tao Song ◽  
Chao Liu ◽  
Hengxuan Zhu ◽  
Min Zeng ◽  
Jin Wang
Keyword(s):  
Layer Thickness ◽  
Dielectric Layer ◽  
Gas Turbines ◽  
Particle Deposition ◽  
Optimization Design ◽  
Turbine Blades ◽  
Simulation Software ◽  
Circuit Board ◽  
Normal Operation ◽  
Mass Detection

Abstract Normal operation of gas turbines will be affected by deposition on turbine blades from particles mixed in fuels. This research shows that it is difficult to monitor the mass of the particles deposition on the wall surface in real time. With development of electronic technology, the antenna made of printed circuit board (PCB) has been widely used in many industrial fields. Microstrip antenna is first proposed for monitoring particles deposition to analyse the deposition law of the particles accumulated on the wall. The simulation software Computer Simulation Technology Microwave Studio (CST MWS) 2015 is used to conduct the optimization design of the PCB substrate antenna. It is found that the S11 of vivaldi antenna with arc gradient groove exhibits a monotonous increase with the increase of dielectric layer thickness, and this antenna is highly sensitive to the dielectric layer thickness. Moreover, a cold-state test is carried out by using atomized wax to simulate the deposition of pollutants. A relationship as a four number of times function is found between the capacitance and the deposited mass. These results provide an important reference for the mass detection of the particle deposition on the wall, and this method is suitable for other related engineering fields.

scholarly journals Mutual interactions of oscillating quartz tuning forks in superfluid 4He

2013 ◽  
Vol 39 (10) ◽  
pp. 823-827 ◽  
Author(s):  
G. Sheshin ◽  
I. Gritsenko ◽  
D. Schmoranzer ◽  
L. Skrbek
Keyword(s):  
Superfluid 4He ◽  
Tuning Forks ◽  
Quartz Tuning Forks

Measuring the Prong Velocity of Quartz Tuning Forks Used to Probe Quantum Fluids

2010 ◽  
Vol 161 (5-6) ◽  
pp. 536-547 ◽  
Author(s):  
D. I. Bradley ◽  
P. Crookston ◽  
M. J. Fear ◽  
S. N. Fisher ◽  
G. Foulds ◽  
...  
Keyword(s):  
Quantum Fluids ◽  
Tuning Forks ◽  
Quartz Tuning Forks

scholarly journals Some Studies on Forming Optimization with Genetic Algorithm

2012 ◽  
Vol 2 (2) ◽  
pp. 105-112
Author(s):  
Ganesh Marotrao KAKANDIKAR ◽  
Vilas M. NANDEDKAR
Keyword(s):  
Genetic Algorithm ◽  
Process Parameters ◽  
Wide Spectrum ◽  
Simulation Software ◽  
Flow Conditions ◽  
Element Analysis ◽  
Blank Holder ◽  
New Approach ◽  
Finite Element Analysis Simulation ◽  
Selection Of

Forming is a compression-tension process involving wide spectrum of operations and flow conditions. The result of the process depends on the large number of parameters and their interdependence. The selection of various parameters is still based on trial and error methods. In this paper the authors presents a new approach to optimize the geometry parameters of circular components, process parameters such as blank holder pressure and coefficient of friction etc. The optimization problem has been formulated with the objective of optimizing the maximum forming load required in Forming. Genetic algorithm is used for the optimization purpose to minimize the drawing load and to optimize the process parameters. A finite element analysis simulation software Fast Form Advanced is used for the validations of the results after optimization.

scholarly journals Quartz tuning forks resonance frequency matching for laser spectroscopy sensing

2022 ◽  
pp. 100329
Author(s):  
Yufei Ma ◽  
Yinqiu Hu ◽  
Shunda Qiao ◽  
Ziting Lang ◽  
Xiaonan Liu ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Laser Spectroscopy ◽  
Frequency Matching ◽  
Tuning Forks ◽  
Quartz Tuning Forks

Application of quartz tuning forks for detection of endotoxins and Gram-negative bacterial cells by monitoring of Limulus Amebocyte Lysate coagulation

2014 ◽  
Vol 58 ◽  
pp. 132-137 ◽  
Author(s):  
Andrzej Chałupniak ◽  
Karol Waszczuk ◽  
Katarzyna Hałubek-Głuchowska ◽  
Tomasz Piasecki ◽  
Teodor Gotszalk ◽  
...  
Keyword(s):  
Bacterial Cells ◽  
Limulus Amebocyte Lysate ◽  
Gram Negative ◽  
Tuning Forks ◽  
Quartz Tuning Forks

Evaluation of Pseudomonas aeruginosa biofilm formation using Quartz Tuning Forks as impedance sensors

2013 ◽  
Vol 189 ◽  
pp. 60-65 ◽  
Author(s):  
Tomasz Piasecki ◽  
Grzegorz Guła ◽  
Karol Nitsch ◽  
Karol Waszczuk ◽  
Zuzanna Drulis-Kawa ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Biofilm Formation ◽  
Tuning Forks ◽  
Quartz Tuning Forks

Loss Mechanisms Determining the Quality Factors in Quartz Tuning Forks Vibrating at the Fundamental and First Overtone Modes

2018 ◽  
Vol 65 (10) ◽  
pp. 1951-1957 ◽  
Author(s):  
Pietro Patimisco ◽  
Angelo Sampaolo ◽  
Verena Mackowiak ◽  
Hubert Rossmadl ◽  
Alex Cable ◽  
...  
Keyword(s):  
Quality Factors ◽  
Tuning Forks ◽  
Quartz Tuning Forks ◽  
Loss Mechanisms

Acoustic Resonances in Helium Fluids Excited by Quartz Tuning Forks

2010 ◽  
Vol 162 (5-6) ◽  
pp. 678-685 ◽  
Author(s):  
A. Salmela ◽  
J. Tuoriniemi ◽  
J. Rysti
Keyword(s):  
Tuning Forks ◽  
Quartz Tuning Forks ◽  
Acoustic Resonances
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