Secondary bending moment and geometric nonlinearity should be taken into account in pipe tower design. Taking the 110kV double-circuit narrow-base steel as an example, 110 kV is compared analyzed through structure design software general finite element ANSYS. The analysis results show that tube adopt a rigid-truss model, influence of secondary main material considered. effect accounts for about...

This technical note numerically and experimentally studies a vibration energy harvester (VEH) consisting of set two parallel elastic steel sheets (ESSs) piezoelectric patches (PZTs) in pipe flow. The roots the are fixed on base with PZTs to form double inverted flag harvesting system (DIF-VEHS). In this note, semi-circular receiving device (receiver) was added free end steel, cylinder installed...

A distributed Brillouin fiber sensor has been employed to detect localized pipe-wall buckling in an energy pipe by measuring the longitudinal and hoop strain distributions along the outer surface of the pipe for the first time. The locations of the localized pipe-wall buckling are found and distinguished using their corresponding strain-load data. The formation of the buckling process for the c...

Buried water and gas pipe systems form part of critical infrastructure providing essential services to the community. In many global population centres including in Australia, this vital infrastructure has been installed several decades ago, and dealing with frequent pipe failures become a major problem. There are clear evidences that pipe failures significantly depend on pipe strains induced b...

This paper determines most common model of in-pipe robots to derive its degree of freedom in order to compare with the necessary degree of freedom required for a system to move inside pipelines freely in order to derive analytical reason for losing control of in-pipe robots at branched pipe. DOF of most common mechanism in in-pipe robots can be calculated by considering the robot as a parallel ...