In Situ Monitoring of Additive Manufacturing Using Digital Image Correlation: A Review

Cunha, Filipa G.; Santos, Telmo G.; Xavier, José

doi:10.3390/ma14061511

Cited by 51 publications

(26 citation statements)

References 98 publications

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“…Fig 14. Hysteresis loops for the stress amplitude of 500 MPa correlated with the DIC measurements performed after 1, 100,000, 250,000 and 301,251 cycles…”

mentioning

confidence: 84%

“…Both ESPI and DIC have many applications. DIC was used to study different kinds of materials, such as soft and hard biological tissues [6][7][8][9], dental materials [10], hightemperature applications [11], structural dynamics [12], residual stress and its error estimation [13], in situ monitoring of additive manufacturing [14], and many others. On the other hand, ESPI has been recently employed for assessing the integrity of structural materials, evaluating residual stress fields in pipes, measuring surface displacements during inflation testing of ocular tissues or assessing strain in bone-implant interfaces [15].…”

Section: Introductionmentioning

confidence: 99%

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Suitability of DIC and ESPI optical methods for monitoring fatigue damage development in X10CrMoVNb9-1 power engineering steel

Kopeć

Brodecki

Kukla

et al. 2021

Archiv.Civ.Mech.Eng

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The aim of this research was to compare the effectiveness of two different optical measurement techniques (digital image correlation—DIC and electronic speckle pattern interferometry—ESPI) during fatigue damage development monitoring in X10CrMoVNb9-1 (P91) power engineering steel for pipes. The specimens machined from the as-received pipe were subjected to fatigue loadings and monitored simultaneously using DIC and ESPI techniques. It was found that DIC technique, although characterised by lower resolution, was more effective than ESPI. DIC allows to monitor the fatigue behaviour of steel specimens and accurately indicate the area of potential failure even within the initial stage of fatigue damage development.

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“…Fig 14. Hysteresis loops for the stress amplitude of 500 MPa correlated with the DIC measurements performed after 1, 100,000, 250,000 and 301,251 cycles…”

mentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Suitability of DIC and ESPI optical methods for monitoring fatigue damage development in X10CrMoVNb9-1 power engineering steel

Kopeć

Brodecki

Kukla

et al. 2021

Archiv.Civ.Mech.Eng

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“…In many of them, the primary focus should be on the quantitative estimation of the kinetics of elastoplastic strain and the effects of process parameters and geometry of the manufactured large-size parts on warping and fracture. Existing experimental methods, however, cannot provide comprehensive data due to the limited accessibility for sensors mounting in the regions exposed to high temperatures [ 10 , 11 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Evolution of Stress Field during Direct Laser Deposition of Multilayer Thin Wall of Ti-6Al-4V

et al. 2021

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The present work seeks to extend the level of understanding of the stress field evolution during direct laser deposition (DLD) of a 3.2 mm thick multilayer wall of Ti-6Al-4V alloy by theoretical and experimental studies. The process conditions were close to the conditions used to produce large-sized structures by the DLD method, resulting in specimens having the same thermal history. A simulation procedure based on the implicit finite element method was developed for the theoretical study of the stress field evolution. The accuracy of the simulation was significantly improved by using experimentally obtained temperature-dependent mechanical properties of the DLD-processed Ti-6Al-4V alloy. The residual stress field in the buildup was experimentally measured by neutron diffraction. The stress-free lattice parameter, which is decisive for the measured stresses, was determined using both a plane stress approach and a force-momentum balance. The influence of the inhomogeneity of the residual stress field on the accuracy of the experimental measurement and the validation of the simulation procedure are analyzed and discussed. Based on the numerical results it was found that the non-uniformity of the through-thickness stress distribution reaches a maximum in the central cross-section, while at the buildup ends the stresses are distributed almost uniformly. The components of the principal stresses are tensile at the buildup ends near the substrate. Furthermore, the calculated equivalent plastic strain reaches 5.9% near the buildup end, where the deposited layers are completed, while the plastic strain is practically equal to the experimentally measured ductility of the DLD-processed alloy, which is 6.2%. The experimentally measured residual stresses obtained by the force-momentum balance and the plane stress approach differ slightly from each other.

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“…In order to increase the flexibility and productivity of production it is necessary to include not only automation, but especially cybernetics and IT. [4], [5] These production implementations would not have been achieved without industrial revolutions and their development. The ever-increasing demands on the quality and greater production of products also result in the constant development of robotics and automation.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of 3D Printing Using a Universal Printing System on the Robot Arm UR5

Pollák¹,

Kočiško²

2021

TEM Journal

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The combination of two rapidly evolving technologies such as additive manufacturing technology and robotics opens up a wide potential for solving new production tasks. In advance, several challenges need to be addressed in order to intensify the possibilities for developing the combination of these technologies. The aim of the article is to point out the possibility of designing a simple universal printing system for the collaborative robot UR5 with an orientation on the need to implement 3D printing. The solution proposed in this way makes it possible to simplify the design of the movements to reduce any further structural modifications and also to reduce the potential mechanical deficiencies of the structure of the printing device.

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In Situ Monitoring of Additive Manufacturing Using Digital Image Correlation: A Review

Cited by 51 publications

References 98 publications

Suitability of DIC and ESPI optical methods for monitoring fatigue damage development in X10CrMoVNb9-1 power engineering steel

Suitability of DIC and ESPI optical methods for monitoring fatigue damage development in X10CrMoVNb9-1 power engineering steel

Spatiotemporal Evolution of Stress Field during Direct Laser Deposition of Multilayer Thin Wall of Ti-6Al-4V

Design and Implementation of 3D Printing Using a Universal Printing System on the Robot Arm UR5

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