3D reconstruction of hot metallic surfaces for industrial part characterization

Bokhabrine, Youssef; Voon, Lew F.C. Lew Yan; Seulin, Ralph; Gorria, Patrick; Gomez, Miguel; Jobard, Daniel

doi:10.1117/12.806015

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…Laser ranging method [3,4] is simple in use and direct reading, however, it is usually used to measure the lengths dimension of forgings. Laser scanning method [5][6][7] has high measuring accuracy, however, it is necessary to collect a great number of points on forging surface by sequentially scanning the forgings. Finally, the forging dimension is achieved by processing the point cloud.…”

Section: Introductionmentioning

confidence: 99%

Online Measurement for the Thermal Geometric Parameters of Hot Large Forgings

Liu

Jia

et al. 2013

AMM

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t is difficult to obtain high measurement accuracy in online detecting the thermal geometric parameters of hot large forgings, based on machine vision method. In this paper, firstly, a spectrum selective image acquisition method for high-temperature components is proposed, which can successfully reduced the effect of high temperature on image quality. Then, a measurement method based on the coding feature lines for geometric parameters of hot large forgings is employed, which can effectively improve the extraction efficiency of geometry characteristic information of high-temperature components. Experiments on the forging workshop show that measurement accuracy of diameters for cylindrical forging reaches 0.2% and the measurement time is 2.25 seconds; measurement accuracy of lengths for cuboid forging reaches 0.48% and the measurement time is 5.9 seconds. The experimental results have verified the feasibility and high efficiency of the proposed method for measuring the geometric parameters of hot large forgings.

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Section: Introductionmentioning

confidence: 99%

Online Measurement for the Thermal Geometric Parameters of Hot Large Forgings

Liu

Jia

et al. 2013

AMM

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“…Our system does not require an a priori knowledge of the cylinder size and orientation. In a previous version of the system, intervention of the operators is necessary in order to extract and reconstruct the shell surfaces and geometry [9,10]. For each acquisition, the operator has to click at three different locations on the thickness of the shell with the mouse.…”

Section: Introductionmentioning

confidence: 99%

3D characterization of hot metallic shells during industrial forging

Bokhabrine

Seulin

Voon

et al. 2010

Machine Vision and Applications

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During industrial forging of hot metallic shells, it is necessary to regularly measure the dimensions of the parts, especially the inner and outer diameters and the thickness of the walls. A forging sequence lasts 2 h or more during which the diameter of the shell is regularly measured in order to decide when to stop the forging process. For better working conditions, for the safety of the blacksmiths, and for a faster and more accurate measurement, we have developed a novel system based on two commercially available time of flight laser scanners for the measurement of the diameters of hot cylindrical metallic shells during the forging process. The advantages of using laser scanners are that they can be placed very far from the hot shell, more than 15 m, while at the same time giving an accurate point cloud from which three-dimensional views of the shell can be reconstructed and diameter measurements done. Moreover, more accurate measurement is achieved in less time with the laser system than with the conventional method using a large ruler. The system has been successfully used to measure the diameters of hot cylindrical metallic shells.

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Online measuring method of radial section line for ring forgings

Zhang

Miao

et al. 2018

Int J Adv Manuf Technol

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3D reconstruction of hot metallic surfaces for industrial part characterization

Cited by 4 publications

References 5 publications

Online Measurement for the Thermal Geometric Parameters of Hot Large Forgings

Online Measurement for the Thermal Geometric Parameters of Hot Large Forgings

3D characterization of hot metallic shells during industrial forging

Online measuring method of radial section line for ring forgings

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