A Variable-Tensioned Transfer Matrix Method for Modal Analysis of Marine Risers and Its Application to Structural Damage Detection

2021 ◽  
Author(s):  
Xingkun Zhou ◽  
Yuqing Sun ◽  
Wenhua Li
Keyword(s):  
Damage Detection ◽  
Modal Analysis ◽  
Transfer Matrix ◽  
Transfer Matrix Method ◽  
Matrix Method ◽  
Structural Damage ◽  
Structural Damage Detection ◽  
Marine Risers

scholarly journals MODELLING CHARGE TRANSPORT IN DNA USING TRANSFER MATRICES WITH DIAGONAL TERMS

2009 ◽  
Vol 23 (20n21) ◽  
pp. 4138-4149 ◽  
Author(s):  
STEPHEN A. WELLS ◽  
CHI-TIN SHIH ◽  
RUDOLF A. RÖMER
Keyword(s):  
Damage Detection ◽  
Charge Transport ◽  
Transport Properties ◽  
Transfer Matrix ◽  
Transfer Matrix Method ◽  
Matrix Method ◽  
Tight Binding ◽  
Transfer Matrices ◽  
Dna Charge Transport ◽  
Binding Models

There is increasing evidence that DNA can support a considerable degree of charge transport along the strand by hopping of holes from one base to another, and that this charge transport may be relevant to DNA regulation, damage detection and repair. A surprisingly useful amount of insight can be gained from the construction of simple tight-binding models of charge transport, which can be investigated using the transfer-matrix method. The data thus obtained indicate a correlation between DNA charge-transport properties and the locations of cancerous mutation. We review models for DNA charge transport and their extension to include more physically realistic diagonal-hopping terms.

Structural damage detection based on static and modal analysis

AIAA Journal ◽  
1990 ◽  
Vol 28 (6) ◽  
pp. 1110-1115 ◽  
Author(s):  
P. Hajela ◽  
F. J. Soeiro
Keyword(s):  
Damage Detection ◽  
Modal Analysis ◽  
Structural Damage ◽  
Structural Damage Detection

scholarly journals THE TRANSFER MATRIX METHOD FOR MODAL ANALYSIS OF CRACKED MULTISTEP BEAM

2017 ◽  
Vol 55 (5) ◽  
pp. 598
Author(s):  
Nguyen Tien Khiem ◽  
Vu Thi An Ninh ◽  
Tran Thanh Hai
Keyword(s):  
Modal Analysis ◽  
Transfer Matrix ◽  
Transfer Matrix Method ◽  
Arbitrary Number ◽  
Matrix Method ◽  
Crack Detection ◽  
Natural Frequencies ◽  
Modal Testing ◽  
Testing Technique

The present study addresses the modal analysis of multistep beam with arbitrary number of cracks by using the transfer matrix method and modal testing technique. First, there is conducted general solution of free vibration problem for uniform beam element with arbitrary number of cracks that allows one to simplify the transfer matrix for cracked multistep beam. The transferring beam state needs to undertake only at the steps of beam but not through crack positions. Such simplified the transfer matrix method makes straightforward to investigate effect of cracks mutually with cross-section step in beam on natural frequencies. It is revealed that step-down and step-up in beam could modify notably sensitivity of natural frequencies to crack so that the analysis provides useful indication for crack detection in multistep beam. The proposed theory was validated by an experimental case study

Dynamic Performance for the Spindle System of the Composite Grinder Based on Transfer Matrix Method

2012 ◽  
Vol 538-541 ◽  
pp. 2477-2480
Author(s):  
Ming De Duan ◽  
Bo Yin Li ◽  
Guo Li Liang ◽  
Wu Guo Zhang ◽  
Xiao Feng Wang
Keyword(s):  
Modal Analysis ◽  
Natural Frequency ◽  
Transfer Matrix ◽  
Dynamic Characteristics ◽  
Lower Order ◽  
Transfer Matrix Method ◽  
Matrix Method ◽  
Dynamic Performance ◽  
Modal Shape ◽  
Spindle System

Based on transfer matrix method, the dynamic model is established for the spindle system of a composite grinder, and the modal analysis is carried out. The lower-order modal shape and natural frequency in the determined condition is obtained, and the effects of the support span and the support stiffness on the dynamic characteristics of the spindle system are analyzed. The spindle system’s structure is parameterized by the use of Matlab to improve the efficiency of the modeling and calculation.

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