scholarly journals A MULTI-SCALE MULTI-PHYSICS ANALYSIS METHOD FOR MASS CONCENTRATION AND DEFORMATION PROBLEMS

2006 ◽  
Vol 62 (2) ◽  
pp. 425-439
Author(s):  
Mao KURUMATANI ◽  
Kenjiro TERADA
Keyword(s):  
Mass Concentration ◽  
Analysis Method ◽  
Multi Scale

A Multi-Scale Scratch Analysis Method for Quantitative Interpretation of Regional Gravity Fields

2015 ◽  
Vol 58 (1) ◽  
pp. 41-53 ◽  
Author(s):  
YANG Wen-Cai ◽  
SUN Yan-Yun ◽  
HOU Zun-Ze ◽  
YU Chang-Qing
Keyword(s):  
Quantitative Interpretation ◽  
Analysis Method ◽  
Multi Scale ◽  
Gravity Fields ◽  
Regional Gravity

1222 Multi-scale analysis method on bone structure considering the osteosis

2005 ◽  
Vol 2005.5 (0) ◽  
pp. 185-186
Author(s):  
Yuichi SHOYAMA ◽  
Ryosuke MATSUMOTO ◽  
Michihiko NAKAGAKI
Keyword(s):  
Bone Structure ◽  
Scale Analysis ◽  
Analysis Method ◽  
Multi Scale ◽  
Multi Scale Analysis

scholarly journals Multi-scale thermodynamic analysis method for 2D SiC/SiC composite turbine guide vanes

2018 ◽  
Vol 31 (1) ◽  
pp. 117-125 ◽  
Author(s):  
Xin LIU ◽  
Xiuli SHEN ◽  
Longdong GONG ◽  
Peng LI
Keyword(s):  
Thermodynamic Analysis ◽  
Analysis Method ◽  
Guide Vanes ◽  
Multi Scale

Fault Signature Analysis Based on Transient Current for Induction Motors

2010 ◽  
Vol 44-47 ◽  
pp. 1807-1811
Author(s):  
Feng Lv ◽  
Hao Sun ◽  
Wen Xia Du ◽  
Shue Li
Keyword(s):  
Fault Diagnosis ◽  
Induction Motors ◽  
Scale Transformation ◽  
Stationary Condition ◽  
Analysis Method ◽  
Broken Rotor Bars ◽  
Multi Scale ◽  
Stator Current ◽  
Time Varying Frequency ◽  
Basic Characteristics

The characteristics of broken rotor bars in induction motors are reflected in the abnormal harmonic of the stator current. At present, fast Fourier transform( ) and time-varying frequency spectrum analysis method are used in such fault diagnosis, but non-stationary motors operation can bring a certain difficulties to the monitoring and diagnosis. This paper studies the basic characteristics of wavelet transform, adopting the wavelet analysis technologies of signal processing and selecting mother wavelet, the paper makes the multi-scale transformation to the motor starting current, excavates the harmonic informations on non-stationary condition, realizes fault diagnosis of motor broken rotor bars effectively, The consistent diagnostic results prove the effectiveness of the method.

scholarly journals MSBE Analysis with Frequency Spectra for Automated Identification of Epileptic Seizure

2019 ◽  
Vol 8 (12) ◽  
pp. 5869-5874
Keyword(s):  
Spectral Analysis ◽  
Seizure Detection ◽  
Detection Technique ◽  
Discriminative Power ◽  
Entropy Analysis ◽  
Analysis Method ◽  
Automated Identification ◽  
Frequency Spectra ◽  
Multi Scale ◽  
Spectral Analysis Method

Objective-This study introduces a reliable automated seizure detection technique based on MSBE (Multi scale bubble entropy) and frequency spectral analysis. Method- This paper aims to develop a novel seizure detection technique that incorporates AM FM model for decomposition of EEG into different sub bands. In our approach, integrated feature set is constructed using multi scale bubble entropy analysis at each sub band and frequency spectral analysis at each electrode. Result-In this paper, an application of bubble entropy with different frequency parameter such as PPF and PSD is provided in order to access its stable and outstanding performance on epileptic seizer detection. The experimental results show that classification accuracy is improved with this algorithm. These finding suggest that extracted features can be used for treatment of epilepsy. Significance- This method provides greater stability and discriminative power, so this technique could be used to detect wider range of seizures.

scholarly journals A Multi-Scale Submodel Method for Fatigue Analysis of Braided Composite Structures

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4190
Author(s):  
Jincheng Zheng ◽  
Peiwei Zhang ◽  
Dahai Zhang ◽  
Dong Jiang
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Fatigue Failure ◽  
Failure Criterion ◽  
Cell Model ◽  
Fatigue Analysis ◽  
Analysis Method ◽  
Shear Lag ◽  
Multi Scale ◽  
Meso Scale

A multi-scale fatigue analysis method for braided ceramic matrix composites (CMCs) based on sub-models is developed in this paper. The finite element shape function is used as the interpolation function for transferring the displacement information between the macro-scale and meso-scale models. The fatigue failure criterion based on the shear lag theory is used to implement the coupling calculation of the meso-scale and micro-scale. Combining the meso-scale cell model and the fatigue failure criterion based on the shear lag theory, the fatigue life of 2D SiC/SiC is analyzed. The analysis results are in good agreement with the experimental results, which proves the accuracy of the meso-scale cell model and the fatigue life calculation method. A multi-scale sub-model fatigue analysis method is used to study the fatigue damage of 2D SiC/SiC stiffened plates under random tension–tension loads. The influence of the sub-models at different positions in the macro-model element on the analysis results was analyzed. The results shows that the fatigue analysis method proposed in this paper takes into account the damage condition of the meso-structured of composite material, and at the same time has high calculation efficiency, and has low requirements for modeling of the macro finite element model, which can be better applied to the fatigue analysis of CMCs structure.

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