Surface modeling method for aircraft engine blades by using speckle patterns based on the virtual stereo vision system

Zhou, Yu; Ma, Kai; Wang, Zhijun; Wu, Jun; Wang, Tao; Zhuge, Jingchang

doi:10.1016/j.optcom.2017.10.064

Cited by 6 publications

(4 citation statements)

References 14 publications

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“…Then, according to the theory of cubic B-spline, the curve and surface of the blade are fitted, and the damaged blade model is obtained. Then the complete configuration of the blade is obtained through the surface extension to provide the model basis for the adaptive positioning and fixed-point repair of the blade [7].…”

Section: B Digital Blade Modelingmentioning

confidence: 99%

“…It is assumed that the construction mode of the coordinate system of the measuring camera is similar to this, all of which are right-hand coordinate systems, and the corresponding points P 1 , P 2 , P 3 , P 4 are P G1 , P G2 , P G3 , P G4 respectively. Therefore, the conversion relationship between the coordinate system of the mark point O − x P y P z P and the coordinate system of the measuring camera O − x G y G z G is realized by a rotation matrix R P and a translation vector T P , as shown in (7) and (8).…”

Section: ) Pose Solution Of Mark Point Coordinate System In the Coordinate System Of Measuring Cameramentioning

confidence: 99%

“…At present, the traditional laser measurement and visual scanning method are relatively common methods for blade measurement, which have fast measurement speed and high efficiency. However, there are more point cloud data and more noise points in the measurement points, so a large number of data processing is needed to complete the blade model construction [7]. Meanwhile, the traditional blade repair laser cladding area grinding and polishing needs a lot of manpower and material resources.…”

Section: Introductionmentioning

confidence: 99%

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Adaptive Positioning Repair Method for Aero-Engine Blades by Using Speckle Vision Measurement

Zhan

Zhang

et al. 2020

IEEE Access

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The repair of damaged aero-engine blades has an extremely high economic value. Due to the complexity of the blade surface and various kinds of deformation during the lifetime, blade positioning in the repair process has always been one of the key problems in the aviation industry. In this study, a method of blade self-adaptive positioning repair method based on speckle vision measurement is proposed. Firstly, a speckle vision measurement system is established to measure the speckles coated on the damaged blade surface to obtain its surface point cloud. Meanwhile, the coordinates of the reference points on the fixture are obtained to build the relative pose model between the blade and the fixture. Secondly, through the solution of posture relations among the mark point coordinate system, measuring camera coordinate system, probe coordinate system, and machine coordinate system, the self-adaptive positioning of the underpositioning clamping blade in the machine coordinate system is achieved. Then based on the positioning model, the machining repair parameters are selected reasonably to complete the CNC (Computer numerical control) path planning of tool repair. Finally, the DMU five-axis numerical control center was used to carry out adaptive positioning repair experiments on the damaged blades. The experimental results showed that this method could achieve satisfying repair effect in under positioning clamping, and provide a new method for repairing damaged aero-engine blades.INDEX TERMS Repair for damaged blades, speckle vision measurement, adaptive positioning, CNC repair path planning.

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Section: B Digital Blade Modelingmentioning

confidence: 99%

Section: ) Pose Solution Of Mark Point Coordinate System In the Coordinate System Of Measuring Cameramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Adaptive Positioning Repair Method for Aero-Engine Blades by Using Speckle Vision Measurement

Zhan

Zhang

et al. 2020

IEEE Access

Self Cite

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“…With the continuous improvement of performance requirements for aero engines, the engine rotors with lighter structure mass, larger workload and higher endurance temperature are required, for which the related fatigue and reliability issues are subsequently exposed [1]. Among various components of aero engine, the related fatigue reliability issue of compressor disk has attracted the attention of scholars due to its complicated structure and the load environment [2,3]. The damage characteristics of multiple parts of the compressor disk can be attributed to its mechanical complexity and stress state.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Reliability Analysis of a Compressor Disk Based on Probability Cumulative Damage Criterion

Ren

Zhao

2020

Materials

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The reliability of aero engine has a direct impact on the flight safety of the whole plane. With the continuous improvement of performance requirements of aero engines, the related fatigue and reliability problems also appear. For the fatigue failure characteristics of the typical component (compressor disk) in an aero engine, the fatigue reliability of its multi-site damage structure in service is analyzed by using probability cumulative damage criterion in this paper. The probability distribution definitions of life, damage and damage threshold are discussed and the relationship among them is also introduced by the new proposed criterion. Meanwhile, a method to determine the probability distribution of cumulative damage threshold and probability life prediction is carried out, based on which a hierarchical index system of statistical analysis and reliability modeling principle on the system level is further constructed for compressor disk. At the end of the paper, a certain cruise of fighter plane is analyzed to verify the validity of the new model. Emphasizing the difference between the compressor disk and traditional component, the new reliability analysis model developed in this study is basically reasonable for most of the load histories for the compressor disk, other than the traditional one, especially for the changeable and complex cruise missions.

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Unsupervised texture reconstruction method using bidirectional similarity function for 3-D measurements

Chen

Liu

et al. 2019

Optics Communications

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Surface modeling method for aircraft engine blades by using speckle patterns based on the virtual stereo vision system

Cited by 6 publications

References 14 publications

Adaptive Positioning Repair Method for Aero-Engine Blades by Using Speckle Vision Measurement

Adaptive Positioning Repair Method for Aero-Engine Blades by Using Speckle Vision Measurement

Fatigue Reliability Analysis of a Compressor Disk Based on Probability Cumulative Damage Criterion

Unsupervised texture reconstruction method using bidirectional similarity function for 3-D measurements

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