Engineering application of ZM5600 high precision optical imaging quality testing environment simulator

Optical imaging is a commonly used technique in civil engineering for aiding the archival of damage scenes and more recently for image analysis-based damage quantification. However, the limitations are evident when applying optical imaging in the field. The most significant one is the lacking of computing and processing capability in the real time. The advancement of mobile imaging and computing technologies provides a promising opportunity to change this norm. This paper first provides a timely introduction of the state-of-the-art mobile imaging and computing technologies for the purpose of engineering application development. Further we propose a mobile imaging and computing (MIC) framework for conducting intelligent condition assessment for constructed objects, which features in situ imaging and real-time damage analysis. This framework synthesizes advanced mobile technologies with three innovative features: (i) context-enabled image collection, (ii) interactive image preprocessing, and (iii) real-time image analysis and analytics. Through performance evaluation and field experiments, this paper demonstrates the feasibility and efficiency of the proposed framework.

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Research on Monitoring Method of Remote Deformation and System Application Based on Image

Advances in Civil Engineering ◽

10.1155/2021/9229311 ◽

2021 ◽

Vol 2021 ◽

pp. 1-14

Author(s):

Yu Zhang ◽

Ruofei Zhong ◽

Yongrong Li ◽

Haili Sun

Keyword(s):

Monitoring System ◽

High Precision ◽

Engineering Application ◽

Deformation Monitoring ◽

Image Feature ◽

Deformation Analysis ◽

Monitoring Cost ◽

Scale Invariant ◽

Monitoring Method ◽

Reference Target

The development of information technology and computer science has put forward higher requirements on the intelligence of deformation monitoring. We study a method based on image deformation analysis, which uses Scale-Invariant Feature Transform (SIFT) to extract image feature points after preprocessing the acquired images, applies All-Pixels Matching (APM) method to the sequence images to do further high-precision matching to achieve the accuracy of subpixels, and finally solves the deformation variables according to the relationship of the real size of the reference target and its pixel. Wavelet analysis and least squares are used to improve the image quality and matching accuracy. Based on this method, we design and develop a new remotely automated deformation monitoring system. In this paper, we introduce the algorithm principle of deformation analysis, the integration of the system, and the engineering application example of the monitoring system. The monitoring accuracy of the system satisfying 0.1 mm within 10 m and 0.8 mm within 60 m is verified in the simultaneous comparison observation according to the high-precision total station, which illustrates the effectiveness of the present deformation analysis method and monitoring system and also has the characteristics of low monitoring cost and high degree of automation.

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Research on Application of 500MPa Water Cutting Composite Material

Volume 1A, Symposia: Keynotes; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Fluid Machinery; Industrial and Environmental Applications of Fluid Mechanics; Pumping Machinery ◽

10.1115/fedsm2017-69394 ◽

2017 ◽

Author(s):

Shengxiong Xue ◽

Zhengwen Chen ◽

Qile Ren ◽

Caihong Han ◽

Bo Chen ◽

...

Keyword(s):

High Precision ◽

High Speed ◽

Large Scale ◽

Engineering Application ◽

Theoretical Research ◽

Working Pressure ◽

Technical Requirements ◽

Test Application ◽

Water Cutting ◽

Research On Application

For large scale curved composite components cutting process engineering application, high precision and high speed are basic cutting requirements. This paper proposed to improve the working pressures up to 500MPa as high-end water cutting working condition. Mathematical model was established based on lots of complicated tests, and cutting mechanism with the aim of ultra-high pressure water cutting processing center equipment reliability was designed. Through the test application examples, it is showed that high precision and high speed water cutting composite components are corresponding to reliable water cutting processing operation. The theoretical research, structural design, test application of the project in this paper was well adapted to the high technical requirements for composite craft wing processing. It can be seen that it is very important to improve the working pressure to reach high precision and high speed composite components processing under the premise of reliable operation.

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