An ACO-Based Tool-Path Optimizer for 3-D Printing Applications

Fok, Kai-Yin; Cheng, Chi‐Tsun; Ganganath, Nuwan; Iu, Herbert Ho-Ching; Tse, Chi K.

doi:10.1109/tii.2018.2889740

Cited by 26 publications

(13 citation statements)

References 25 publications

(32 reference statements)

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“…Specific requirements for this sorting to obtain FLM-suitable tours were laid out in Wasser et al (1999). In literature about manufacturing, many elaborated algorithms exist (e.g., Yang et al 2002;Han, Jafari & Seyed 2003;Fok et al 2019). For this reason, sorting is regarded as a 'black box'.…”

Section: Printing Path Derivationmentioning

confidence: 99%

Systematic development of load-path dependent FLM-FRP lightweight structures

Voelkl

Wartzack

2021

Des. Sci.

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Additive manufacturing offers a high degree of design freedom. When Design for Additive Manufacturing is conducted properly, lightweight potential can be exploited. This contribution introduces a novel design approach for the widespread fused layer modelling (FLM) technology when using orthotropic Fibre Reinforced Polymer filament. Its objective is to obtain stiff and strong load-path optimized FLM structures in a structured and algorithmic way. The approach therefore encompasses (1) build orientation optimization to consider weaker bonding between layers than intralayer; (2) topology optimization with orthotropic material properties to obtain favourable overall geometry and inner structure; (3) direct build path generation from optimized material orientation and alternatives to the direct generation and (4) simulation. The approach is demonstrated using a lift arm under multiple load cases and further demonstrator parts to show its general applicability. Lightweight potential of individual optimization steps and the influence of modifications contrasting general non-FLM-specific optimization are studied and discussed.

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Section: Printing Path Derivationmentioning

confidence: 99%

Systematic development of load-path dependent FLM-FRP lightweight structures

Voelkl

Wartzack

2021

Des. Sci.

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“…Another recent solution [17] is related with the detection of stripes caused by motions of printheads without printing with leaking drops of filament. The Authors proposed the use of the ant colony optimization to choose the tool path speeding-up the manufacturing process and avoiding some of the visual artifacts.…”

Section: Machine Vision In Additive Manufacturingmentioning

confidence: 99%

Adaptation of Full-Reference Image Quality Assessment Methods for Automatic Visual Evaluation of the Surface Quality of 3D Prints

Okarma¹,

Fastowicz²

2019

ELEKTRON ELEKTROTECH

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Automatic visual quality assessment of the 3D printed surfaces is currently one of the most demanding challenges in additive manufacturing. Regardless of the applications of the computer vision for the 3D printing process monitoring purposes, a reliable surface quality evaluation during manufacturing may introduce brand new possibilities. The detection of some distortions and their automatic evaluation can be helpful when deciding to stop the process to save time, energy, and filament. In some cases, some further corrections can also be made for relatively small distortions. Since many general-purpose image quality assessment methods have been proposed in recent years, their applications for the quality evaluation in the additive manufacturing are investigated. As most of the metrics are full-reference and require the availability of the original perfect quality image, their direct application is not possible. Therefore, their adaptation is described in the paper together with experimental verification of classification results obtained using various metrics.

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“…An automated visual inspection of the 3D printing process may also be related to collision detection and the use of visual feedback [21]. On the other hand, some more advanced systems make it possible to optimize the tool paths during manufacturing [22], as well as to use multiple filaments for fabrication [23]. However, the latter solution, known as MultiFab, requires the use of a 3D scanner and closed-feedback loop for small corrections, hence its usefulness for low-cost devices may be limited, even considering the relatively small budget provided by its authors (less than $7000).…”

Section: Introductionmentioning

confidence: 99%

Quality Assessment of 3D Printed Surfaces Using Combined Metrics Based on Mutual Structural Similarity Approach Correlated with Subjective Aesthetic Evaluation

2020

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Quality assessment of the 3D printed surfaces is one of the crucial issues related to fast prototyping and manufacturing of individual parts and objects using the fused deposition modeling, especially in small series production. As some corrections of minor defects may be conducted during the printing process or just after the manufacturing, an automatic quality assessment of object’s surfaces is highly demanded, preferably well correlated with subjective quality perception, considering aesthetic aspects. On the other hand, the presence of some greater and more dense distortions may indicate a reduced mechanical strength. In such cases, the manufacturing process should be interrupted to save time, energy, and the filament. This paper focuses on the possibility of using some general-purpose full-reference image quality assessment methods for the quality assessment of the 3D printed surfaces. As the direct application of an individual (elementary) metric does not provide high correlation with the subjective perception of surface quality, some modifications of similarity-based methods have been proposed utilizing the calculation of the average mutual similarity, making it possible to use full-reference metrics without the perfect quality reference images, as well as the combination of individual metrics, leading to a significant increase of correlation with subjective scores calculated for a specially prepared dataset.

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An ACO-Based Tool-Path Optimizer for 3-D Printing Applications

Cited by 26 publications

References 25 publications

Systematic development of load-path dependent FLM-FRP lightweight structures

Systematic development of load-path dependent FLM-FRP lightweight structures

Adaptation of Full-Reference Image Quality Assessment Methods for Automatic Visual Evaluation of the Surface Quality of 3D Prints

Quality Assessment of 3D Printed Surfaces Using Combined Metrics Based on Mutual Structural Similarity Approach Correlated with Subjective Aesthetic Evaluation

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