An Embedded Tubular PZT Transducer Based Damage Imaging Method for Two-Dimensional Concrete Structures

The use of Lamb waves for structural health monitoring (SHM) has complicated by its multi-mode character and dispersion effect, which impacts the damage positioning and high-resolution imaging. The group velocity dispersion curves of Lamb waves can be employed to warp the frequency axis, and then to establish warped frequency transform (WFT) to process Lamb waves. In this paper, received signals are directly compensated with warped frequency transform to suppress dispersion, and a new imaging method is proposed based on warped frequency transform. The propagation of Lamb waves in damaged aluminum plate is simulated by finite element software ABAQUS, results show that warped frequency transform can effectively compensate dispersive wave-packets, and high-resolution damage imaging can be obtained by the proposed method.

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A two-dimensional microwave radiation imaging method based on data fusion

ISAPE2012 ◽

10.1109/isape.2012.6408842 ◽

2012 ◽

Author(s):

Yuanyuan Liu ◽

Lu Zhu ◽

Dechang Huang

Keyword(s):

Data Fusion ◽

Microwave Radiation ◽

Imaging Method ◽

Two Dimensional ◽

Radiation Imaging

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Framework to optimise two-dimensional DIC measurements at different orders of accuracy for concrete structures

Structures ◽

10.1016/j.istruc.2020.08.056 ◽

2020 ◽

Vol 28 ◽

pp. 93-105

Author(s):

Qifang Liu ◽

Daniel Ting-Wee Looi ◽

Helen Hongniao Chen ◽

Chen Tang ◽

Ray Kai Leung Su

Keyword(s):

Concrete Structures ◽

Two Dimensional

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The Application of Building Information Model in the Deepen Design of Prestressed Concrete Structures

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.716-717.303 ◽

2014 ◽

Vol 716-717 ◽

pp. 303-306

Author(s):

Er Wei Guo ◽

Ying Xin Qian ◽

Gang Xu ◽

Jin Dong Gao ◽

Chen Guang Li

Keyword(s):

Process Design ◽

Prestressed Concrete ◽

Digital Technology ◽

Concrete Structure ◽

Concrete Structures ◽

Advanced Technology ◽

Two Dimensional ◽

Building Information Model ◽

Building Information ◽

Complete Process

Currently deepen design of prestressed concrete structure exists various problems, them can be solved using BIM building digital technology in the deepen design phase of prestressed concrete structures, such as constant correction of the two-dimensional drawings. BIM technology was advanced technology, the design of prestressed concrete structures, was given by using BIM technology in the complete process; Design process and value of the application of the BIM technology in the prestressed concrete structure were analyzed, Prospects of the BIM technology using in prestressed concrete were discussed.

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Incoherent imaging method of two-dimensional conducting object by using multifrequency time-harmonic source

Microwave and Optical Technology Letters ◽

10.1002/(sici)1098-2760(19980205)17:2<117::aid-mop11>3.0.co;2-5 ◽

1998 ◽

Vol 17 (2) ◽

pp. 117-121

Author(s):

Jin-Seob Kang ◽

Jung-Woong Ra

Keyword(s):

Imaging Method ◽

Two Dimensional ◽

Time Harmonic ◽

Harmonic Source ◽

Incoherent Imaging

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Damage Imaging of Pipes in Nuclear Power Plants Using Torsional Guided Wave Modes

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.577-578.661 ◽

2013 ◽

Vol 577-578 ◽

pp. 661-664

Author(s):

Zhao Xiang Wei ◽

Hong Xu ◽

Hong Yuan Li

Keyword(s):

Power Plant ◽

Nuclear Power Plant ◽

Nuclear Power ◽

Power Plants ◽

Guided Waves ◽

Axial Position ◽

Imaging Method ◽

Long Distance ◽

Torsional Mode ◽

Damage Imaging

Ultrasonic guided waves can propagate a long distance in pipeline with little attenuation. This means the damage in nuclear power plant can be detected from a remote single position. In the paper, the propagation of the guided waves are analyzed for the nuclear power plant pipes, and the axisymmetric torsional mode T(0,1) is chosen as the detection mode. An imaging method based on the synthetic focusing algorithm is used to obtain the damage information. The method is then verified by the finite element model. Results illustrate that the damage can be detected and located accurately by the damage imaging method. Not only the axial position, but also the circumferential position can be located simultaneously.

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