A virtual fixture using a FE-based transformation model embedded into a constrained optimization for the dimensional inspection of nonrigid parts

Abenhaim, Gad N.; Desrochers, Alain; Tahan, Antoine; Bigeon, Jean

doi:10.1016/j.cad.2014.12.006

Cited by 20 publications

(20 citation statements)

References 21 publications

(18 reference statements)

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“…Abenhaim et al [28] introduced a method that registers the point cloud to the nominal model using information recuperated from the FE model of the CAD model. This is done by embedding a FE-based transformation model into a boundary displacement constrained optimization.…”

Section: Review Of Previous Researchmentioning

confidence: 99%

A robust and automated FE-based method for fixtureless dimensional metrology of non-rigid parts using an improved numerical inspection fixture

Sabri

Sattarpanah

Tahan

et al. 2017

Int J Adv Manuf Technol

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Dimensional inspection is an important element in the quality control of mechanical parts that have deviations from their nominal (CAD) model resulting from the manufacturing process. The focus of this research is on the profile inspection of non-rigid parts which are broadly used in the aeronautic and automotive industries. In a free-state condition, due to residual stress and gravity loads, a non-rigid part can have a different shape compared with its assembled condition. To overcome this issue, specific inspection fixtures are usually allocated in industry to compensate for the displacement of such parts in order to simulate the use state and accomplish dimensional inspections. These dedicated fixtures, their installation, and the inspection process consume a large amount of time and cost. Therefore, our principal objective has been to develop an inspection plan for eliminating the need for specialized fixtures by digitizing the displaced part's surface using a contactless (optical) measuring device and comparing the acquired point cloud with the CAD model to identify deviations. In our previous work, we developed an approach to numerically inspect the profile of a non-rigid part using a non-rigid registration method and finite element analysis. To do so, a simulated displacement was performed using an improved definition of boundary conditions for simulating unfixed parts. In this paper, we will improve on the method and save time by increasing the accuracy of displacement boundary conditions and using automatic node insertion and finite element analysis. The repeatability and robustness of the approach will be also studied and its metrological performance will be analyzed. We will apply the improved method on two industrial non-rigid parts with free-form surfaces simulated with different types of displacement, defect, and measurement noise (for evaluation of robustness).

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Section: Review Of Previous Researchmentioning

confidence: 99%

A robust and automated FE-based method for fixtureless dimensional metrology of non-rigid parts using an improved numerical inspection fixture

Sabri

Sattarpanah

Tahan

et al. 2017

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…Some researchers 2–9 proposed virtual inspection methods based on numerical approaches by building a finite element (FE) model of the non-rigid part considered in free-state. In order to assess the geometrical variation of manufactured parts, a point cloud measured on the surface of non-rigid parts in free-state is compared with the computer-aided design (CAD) model.…”

Section: Introductionmentioning

confidence: 99%

“…In order to assess the geometrical variation of manufactured parts, a point cloud measured on the surface of non-rigid parts in free-state is compared with the computer-aided design (CAD) model. Their correspondence is found by either virtually deforming the scanned flexible part into its functional shape 2,3 or by deforming the CAD model towards the measurement data 4–9 through finite element simulations. Obviously, the accuracy of numerical simulation is one of the most important aspects of a virtual inspection process.…”

Section: Introductionmentioning

confidence: 99%

Inverse procedure for mechanical characterization of multi-layered non-rigid composite parts with applications to the assembly process

Pham

Vincent

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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In assembly process, non-rigid parts in free-state may have different forms compared to the designed model caused by gravity load and residual stresses. For non-rigid parts made by multi-layered fiber-reinforced thermoplastic composites, this process becomes much more complex due to the nonlinear behavior of the material. This paper presented an inverse procedure for characterizing large anisotropic deformation behavior of four-layered, carbon fiber-reinforced polyphenylene sulphide, non-rigid composite parts. Mechanical responses were measured from the standard three points bending test and the surface displacements of composite plates under flexural loading test. An orthotropic hyperelastic material model was implemented as a UMAT user routine in the Abaqus/Standard to analyze the behavior of flexible fiber-reinforced thermoplastic composites. Error functions were defined by subtracting the experimental data from the numerical mechanical responses. Minimizing the error functions helps to identify the material parameters. These optimal parameters were validated for the case of an eight-layered composite material.

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“…3 All inspection methods proposed so far are limited to linear elastic isotropic materials with well-known characteristics. 1 –7 Nowadays, the use of parts made of composite materials is progressively growing, especially in aerospace industry. However, up to now, there is no virtual inspection method that was developed for nonrigid composite parts, at least to the best of our knowledge.…”

Section: Introductionmentioning

confidence: 99%

Characterization of multilayered carbon-fiber–reinforced thermoplastic composites for assembly process

Pham

Vincent

et al. 2018

Journal of Thermoplastic Composite Materials

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The aim of this research work is to characterize the mechanical behavior of multilayered carbon-fiber–reinforced polyphenylene sulfide composites with the application to assembly process of nonrigid parts. Two anisotropic hyperelastic material models were investigated and implemented in Abaqus as a user-defined material. An inverse characterization method was applied to identify the parameters of these material models. Finite element simulations at finite strains of a flexible composite sheet were carried out. Numerical results of sheet deformation were compared with the experimental results in order to evaluate the appropriateness of the material models developed for this application.

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A virtual fixture using a FE-based transformation model embedded into a constrained optimization for the dimensional inspection of nonrigid parts

Cited by 20 publications

References 21 publications

A robust and automated FE-based method for fixtureless dimensional metrology of non-rigid parts using an improved numerical inspection fixture

A robust and automated FE-based method for fixtureless dimensional metrology of non-rigid parts using an improved numerical inspection fixture

Inverse procedure for mechanical characterization of multi-layered non-rigid composite parts with applications to the assembly process

Characterization of multilayered carbon-fiber–reinforced thermoplastic composites for assembly process

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