Research of soil compactness tested by instant vibration method

2011 ◽  
Author(s):  
Jianming Jin
Keyword(s):  
Vibration Method ◽  
Soil Compactness

scholarly journals Effects of Precast Cladding Systems on Dynamic Characteristics of Steel Frame Buildings by Ambient and Free Vibration Tests

2017 ◽  
Vol 2017 ◽  
pp. 1-20 ◽  
Author(s):  
Jun Ma ◽  
Shinji Nakata ◽  
Akihito Yoshida ◽  
Yukio Tamura
Keyword(s):  
Free Vibration ◽  
Dynamic Characteristics ◽  
Steel Frame ◽  
Ambient Vibration ◽  
Test Cases ◽  
Vibration Method ◽  
External Wall ◽  
Wide Range ◽  
Cladding Panels ◽  
Vibration Tests

Full-scale tests on a one-story steel frame structure with a typical precast cladding system using ambient and free vibration methods are described in detail. The cladding system is primarily composed of ALC (Autoclaved Lightweight Concrete) external wall cladding panels, gypsum plasterboard interior linings, and window glazing systems. Ten test cases including the bare steel frame and the steel frame with addition of different parts of the precast cladding system are prepared for detailed investigations. The amplitude-dependent dynamic characteristics of the test cases including natural frequencies and damping ratios determined from the tests are presented. The effects of the ALC external wall cladding panels, the gypsum plasterboard interior linings, and the window glazing systems on the stiffness and structural damping of the steel frame are discussed in detail. The effect of the precast cladding systems on the amplitude dependency of the dynamic characteristics and the tendencies of the dynamic parameters with respect to the structural response amplitude are investigated over a wide range. Furthermore, results estimated from the ambient vibration method are compared with those from the free vibration tests to evaluate the feasibility of the ambient vibration method.

Power Transformer Fault Diagnosis Based on Vibration Correlation Analysis

2014 ◽  
Author(s):  
Kaixing Hong ◽  
Hai Huang
Keyword(s):  
Fault Diagnosis ◽  
Correlation Analysis ◽  
Fundamental Frequency ◽  
Vibration Analysis ◽  
Laboratory Tests ◽  
Power Transformer ◽  
Assessment Model ◽  
Vibration Method ◽  
Proposed Model ◽  
Transformer Fault

In this paper, a condition assessment model using vibration method is presented to diagnose winding structure conditions. The principle of the model is based on the vibration correlation. In the model, the fundamental frequency vibration analysis is used to separate the winding vibration from the tank vibration. Then, a health parameter is proposed through the vibration correlation analysis. During the laboratory tests, the model is validated on a test transformer, and manmade deformations are provoked in a special winding to compare the vibrations under different conditions. The results show that the proposed model has the ability to assess winding conditions.

Evaluation of residual tensile strength of fire-damaged concrete using a non-linear resonance vibration method

2015 ◽  
Vol 67 (5) ◽  
pp. 235-246 ◽  
Author(s):  
Sun-Jong Park ◽  
Gang-Kyu Park ◽  
Hong Jae Yim ◽  
Hyo-Gyoung Kwak
Keyword(s):  
Tensile Strength ◽  
Resonance Vibration ◽  
Vibration Method ◽  
Non Linear ◽  
Linear Resonance

scholarly journals Stimulation of nerve endings via medical device

2018 ◽  
Vol 157 ◽  
pp. 02049
Author(s):  
Antonin Svoboda ◽  
Josef Soukup
Keyword(s):  
Success Rate ◽  
Medical Device ◽  
Nerve Endings ◽  
Medical Doctors ◽  
Vibration Method ◽  
Injured Patients ◽  
Stimulation Of Nerve ◽  
Stimulation Of

This solution describes solution of vibromechanism for stimulation nerve paths and nerve endings injured patients. Medical doctors stimulate nerve paths and nerve endings patients after injury of spine or after another injury where was broken nerve endings. These methods are in primary designed for tetraplegic and paraplegic patients specially for men. For this request was developed device and mechanism for vibrostimulation of nerve paths and nerve endings. In develop of construction has been paying attention to safety of mechanism. Next were taken into account the construction of other devices, especially their shortcomings in the operation on the accumulator. For mains powered vibrators 230 (110) Volt were assessed for safety and noise vibrating mechanism. The sum of all failures was proposed structure described below. The success rate of this vibration method is reported mostly between 60-80%.

scholarly journals Texture Evaluation of ^|^lsquo;Taishuu^|^rsquo; Persimmon Using an Acoustic Vibration Method

2013 ◽  
Vol 12 (4) ◽  
pp. 433-438
Author(s):  
Tetsuya Suzuki ◽  
Takeshi Niikawa ◽  
Naoki Sakurai
Keyword(s):  
Acoustic Vibration ◽  
Vibration Method
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