Pressure transducing plane cable structure for fully distributed sound measurements

2021 ◽  
Author(s):  
Luis Costa ◽  
Luca Schenato ◽  
Hugo F. Martins ◽  
Luca Palmieri ◽  
Sonia Martin-Lopez ◽  
...  
Keyword(s):  
Cable Structure

scholarly journals Natural Frequency of Tension Cable Based on Moment Inertia to Span Ratio: Determination Using Analytical, Numerical and Experimental Study

2020 ◽  
Vol 11 (2) ◽  
Author(s):  
Guntur Nugroho ◽  
Keyword(s):  
String Theory ◽  
Analytical Formula ◽  
Suspension Bridge ◽  
Bending Stiffness ◽  
Steel Beam ◽  
Cable Structure ◽  
Vibration Technique ◽  
Ratio Determination ◽  
Cylindrical Steel ◽  
Abaqus Software

Health monitoring using vibration technique is usually conducted on cable structure. The hanger cable on the suspension bridge has a difference of span. To predict axial force of cable, the beam-string theory includes a parameter of bending stiffness. However, string theory has neglected the effect of bending stiffness. The shorter the span of the cable the greater the effect of the bending stiffness would be. This paper raises parameter moment of inertia to span ratio (I/L) to determine the apropriate analytical formula between string and beam-string. Experimental research was conducted using a vibration technique. The specimens use solid cylindrical steel beam, having length specimens of 2 m, hinge-hinge of boundary condition, and difference variations I/L of 0.024, 0.08, 0.58, 1.53 and 10.22. Numerical analysis was simulated by using Abaqus software v 6.13. The result shows that the ratio of I/L equally lowers than 0.082 has close to the analytical string theory. The ratio of I/L greather than 0.082 has close to the beam string theory.

A Porphyrin-Fullerene Dyad with a Supramolecular “Double-Cable” Structure as a Novel Electron Acceptor for Bulk Heterojunction Polymer Solar Cells

2011 ◽  
Vol 23 (26) ◽  
pp. 2951-2956 ◽  
Author(s):  
Chien-Lung Wang ◽  
Wen-Bin Zhang ◽  
Ryan M. Van Horn ◽  
Yingfeng Tu ◽  
Xiong Gong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Acceptor ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Cable Structure

Static analysis of cable structure

2006 ◽  
Vol 27 (10) ◽  
pp. 1425-1430 ◽  
Author(s):  
Yan Huang ◽  
Wei-ren Lan
Keyword(s):  
Static Analysis ◽  
Cable Structure

scholarly journals Characteristic Impedance Analysis of Medium-Voltage Underground Cables with Grounded Shields and Armors for Power Line Communication

Electronics ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 571 ◽  
Author(s):  
Hongshan Zhao ◽  
Weitao Zhang ◽  
Yan Wang
Keyword(s):  
Impedance Matching ◽  
Characteristic Impedance ◽  
Impedance Analysis ◽  
Power Line ◽  
Resonance Phenomenon ◽  
Power Line Communication ◽  
Underground Cables ◽  
Cable Structure ◽  
Medium Voltage ◽  
Calculation Results

The characteristic impedance of a power line is an important parameter in power line communication (PLC) technologies. This parameter is helpful for understanding power line impedance characteristics and achieving impedance matching. In this study, we focused on the characteristic impedance matrices (CIMs) of the medium-voltage (MV) cables. The calculation and characteristics of the CIMs were investigated with special consideration of the grounded shields and armors, which are often neglected in current research. The calculation results were validated through the experimental measurements. The results show that the MV underground cables with multiple grounding points have forward and backward CIMs, which are generally not equal unless the whole cable structure is longitudinally symmetrical. Then, the resonance phenomenon in the CIMs was analyzed. We found that the grounding of the shields and armors not only affected their own characteristic impedances but also those of the cores, and the resonance present in the CIMs should be of concern in the impedance matching of the PLC systems. Finally, the effects of the grounding resistances, cable lengths, grounding point numbers, and cable branch numbers on the CIMs of the MV underground cables were discussed through control experiments.

scholarly journals Tension Force Estimation in Axially Loaded Members using Wearable Piezoelectric Interface Technique

Sensors ◽  
2018 ◽  
Vol 19 (1) ◽  
pp. 47 ◽  
Author(s):  
Joo-Young Ryu ◽  
Thanh-Canh Huynh ◽  
Jeong-Tae Kim
Keyword(s):  
Axial Force ◽  
Load Transfer ◽  
Estimation Method ◽  
Tension Force ◽  
Scale Model ◽  
Force Estimation ◽  
Cable Structure ◽  
Transfer Capability ◽  
Axially Loaded ◽  
The Relationship

Force changes in axially loaded members can be monitored by quantifying variations in impedance signatures. However, statistical damage metrics, which are not physically related to the axial load, often lead to difficulties in accurately estimating the amount of axial force changes. Inspired by the wearable technology, this study proposes a novel wearable piezoelectric interface that can be used to monitor and quantitatively estimate the force changes in axial members. Firstly, an impedance-based force estimation method was developed for axially loaded members. The estimation was based on the relationship between the axial force level and the peak frequencies of impedance signatures, which were obtained from the wearable piezoelectric interface. The estimation of the load transfer capability from the axial member to the wearable interface was found to be an important factor for the accurate prediction of axial force. Secondly, a prototype of the wearable piezoelectric interface was designed to be easily fitted into existing axial members. Finally, the feasibility of the proposed technique was established by assessing tension force changes in a numerical model of an axially loaded cylindrical member and a lab-scale model of a prestressed cable structure.

Singular Perturbation Method for Solving Non-Linear Vibration of Stay Cable (I) - Theory Research

2011 ◽  
Vol 147 ◽  
pp. 112-116
Author(s):  
Zhi Hong Ran ◽  
Jun Tong Qu ◽  
Fei He ◽  
Sheng Miao
Keyword(s):  
Singular Perturbation ◽  
Perturbation Method ◽  
Stay Cable ◽  
Linear Vibration ◽  
Singular Perturbation Method ◽  
Cable Structure ◽  
Non Linear ◽  
Cable Force ◽  
Set Up ◽  
Theory Research

In order to solve the difficult in calculating cable vibration, the non-linear dynamic model of cable was set up with geometrical non-linearity. The differential equation was solved using the singular perturbation method. The analytical expression of frequency and form function was deduced. The expression can be widely used for the field of measurement of cable force and identification of parameter in cable structure.

Coaxial Cable Structure of Manganese Dioxide-Carbon Fiber Composite with High Capacitance Retention for Supercapacitor

2015 ◽  
Vol 7 (7) ◽  
pp. 555-559 ◽  
Author(s):  
Haisheng Tao ◽  
Shuqiong Zhang ◽  
Yingying Cheng ◽  
Xuemei Zhang ◽  
Xiang Tong ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Manganese Dioxide ◽  
Fiber Composite ◽  
Coaxial Cable ◽  
Carbon Fiber Composite ◽  
High Capacitance ◽  
Cable Structure
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