Invited Review Article: Review of post-process optical form metrology for industrial-grade metal additive manufactured parts

Stavroulakis, Petros; Leach, Richard

doi:10.1063/1.4944983

Cited by 64 publications

(35 citation statements)

References 82 publications

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“…In stet: The assessment of geometrical capacity of AM system by using metrological artifact 18,19 ; In process measurement for monitoring the laying of materials during the manufacturing and off-course the shape deviation measurement for quality control and post-processing planning 9 . In this paper we will focus on the last point for quality control.…”

Section: Optical Measurement and Robotized Digitizing Cell For Additimentioning

confidence: 99%

“…It allows characterizing the shape deviation of additive manufactured parts, information that will be used to select and defined the characteristics of the next manufacturing process necessary. Indeed it is often necessary to plan a post processing step with subtractive manufacturing techniques to polish, to reduce the surface stresses or just to reach the required tolerances that are not reachable with AM 9 . In order to scale-up the production and to keep the cadence of production an in line measurement process would be the best option.…”

Section: Introductionmentioning

confidence: 99%

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Inline measurement strategy for additive manufacturing

Bordron

Anwer

Bruneau

2018

Proceedings of the Institution of Mechanical Engineers, Part B:

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Additive manufacturing (AM) takes a growing place in industry tanks to its ability to create free form parts with internal complex shape. Yet the final surfaces quality of the AM parts is still a challenge since it doesn't reach the required level for final use. To address this issue it is necessary to measure the form and dimensions deviation in order to plan post-process operations to be considerate. More over in a context of industry 4.0, this measurement step should be fully integrated into the manufacturing line as close as possible to the AM process and post-process. We introduce in this article an inline measurement solution based on a robot combined with a laser sensor. Robot allows reaching most of the orientation and positions necessary to digitize complex parts in a short time. The use of robot for digitizing is already addressed but not for metrological applications. Robots are perfectly design for velocity, ability and robustness but since now their poor positioning accuracy in not compatible with measuring requirements. The strategy adopted in this article is to provide an algorithm to generate path planning for digitizing AM parts at a given quality of the resulting cloud of points. After a discussion about the geometric and elastic model of the robot to identify the one that answers the quality requirements, the performances of the robot are evaluated. Thus several performances maps are introduced to characterize the behavior of the robot in its working volume. The qualification of the digitizing sensor is also performed to identify relation between digitizing parameters and the quality of final cloud of points. By using data resulting from the qualifications of sensor and robot and the part's CAD model the algorithm allows generating path planning to ensure the finale quality necessary to measure the shape deviation.

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Section: Optical Measurement and Robotized Digitizing Cell For Additimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Inline measurement strategy for additive manufacturing

Bordron

Anwer

Bruneau

2018

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…Structured light systems (SLS) 1,2 are used to perform dimensional measurements on objects by projecting patterns of light, which are subsequently recorded by a camera. SLS have recently proliferated in industrial metrology, because they do not contact the object being measured and thus can be used with final-stage products; they operate much faster than standard contact coordinate measuring machines 3 and provide a more complete measurement as they acquire a large number of measurement points simultaneously.…”

Section: Introductionmentioning

confidence: 99%

“…14 The noncollinearity criterion in fringe projection is a significant limitation when measuring complex objects with self-occlusions, such as those produced by additive manufacturing (AM) techniques. 2,[15][16][17] During the measurement of complex objects, self-occlusions of the object geometry do not allow the camera to view all illuminated parts of the object. To acquire a full 3-D measurement of the object, the general solution is to place the object on a stage and rotate it multiple times with small angular increments to acquire a complete measurement, however, this approach is inefficient and time consuming.…”

Section: Introductionmentioning

confidence: 99%

Flexible decoupled camera and projector fringe projection system using inertial sensors

et al. 2017

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, "Flexible decoupled camera and projector fringe projection system using inertial sensors," Opt. Eng. Abstract. Measurement of objects with complex geometry and many self-occlusions is increasingly important in many fields, including additive manufacturing. In a fringe projection system, the camera and the projector cannot move independently with respect to each other, which limits the ability of the system to overcome object selfocclusions. We demonstrate a fringe projection setup where the camera can move independently with respect to the projector, thus minimizing the effects of self-occlusion. The angular motion of the camera is tracked and recalibrated using an on-board inertial angular sensor, which can additionally perform automated point cloud registration.

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“…CMM (Coordinate Metrology), x-CT (Industrial Computed Tomography) são técnicas primárias de medição de precisão normalmente usadas para controle de qualidade das peças da MA. Alguns autores (BACCHEWAR et al, 2007), (STAVROULAKIS et al, 2016); explicam que a rugosidade superficial dos protótipos feitos em 3D também depende dos vários parâmetros do processo já citados até aqui, como orientação de construção, potência do laser, espessura da camada, velocidade e espaçamento.…”

Section: Rugosidade E Metrologia Dimensionalunclassified

Desenvolvimento De Um Processamento De Sucata Para Impressão 3d De Componentes Mecânicos Na Indústria

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Primeiramente, gostaria de agradecer a Deus por ter me guiado, me fortalecido e me ajudado a definir os melhores caminhos e escolhas durante toda minha caminhada no curso de Engenharia Mecânica. Dedico este trabalho aos meus pais, Lorrane Mury Nepomuceno e Fernando Sebastião Nepomuceno, pela paciência, motivação, dedicação, por todo apoio para vencer mais essa etapa da minha vida. Sem eles este trabalho e muitos dos meus sonhos não se realizariam. Agradeço o companheirismo e o incentivo de sempre, aos meus amigos Nicholas de Carvalho Ribeiro e Mateus Aguiar Rodrigues Lima que durante anos compartilharam comigo apoio, amizade e parceria. Hoje são os irmãos que a engenharia me presenteou. Gostaria de agradecer a Helena Lamego Fernandes por ser minha companheira, parceira, por estar presente na minha vida em cada luta, me motivando todos os dias a vencer, sem me deixar desanimar um dia sequer. Agradeço ao meu orientador Jaime Tupiassú Pinho de Castro, pela confiança, pelos sábios conselhos e sugestões para o desenvolvimento deste trabalho. Sou grato ao meu coorientador, Daniel Luiz de Mattos Nascimento, pelo incentivo desde o início do trabalho, pela paciência, auxilio sempre que necessário, e por todas as oportunidades que me proporcionou. Obrigado também à professora Bruna Brito do CEFET pelo apoio, pelas sugestões e por compartilhar seus conhecimentos comigo sempre disponível a me ajudar. Agradeço aos meus companheiros de trabalho Vitor Heitor e Rodrigo Caiado pela orientação e apoio para desenvolver este trabalho. Obrigado ao Instituto Tecgraf pela oportunidade proporcionada, e a PUC-Rio pela qualidade no ensino.

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Invited Review Article: Review of post-process optical form metrology for industrial-grade metal additive manufactured parts

Cited by 64 publications

References 82 publications

Inline measurement strategy for additive manufacturing

Inline measurement strategy for additive manufacturing

Flexible decoupled camera and projector fringe projection system using inertial sensors

Desenvolvimento De Um Processamento De Sucata Para Impressão 3d De Componentes Mecânicos Na Indústria

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