Computational hydrographic printing

Zhang, Yizhong; Yin, Chunji; Zheng, Changxi; Zhou, Kun

doi:10.1145/2766932

Cited by 50 publications

(36 citation statements)

References 40 publications

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“…The Stokes Problem approximates creeping flow where advective inertial force can be ignored. This problem can also find applications in computational fabrication [ZYZZ15] and physics based animation [BB10]. Similarly, following FEM, the step of divergence free projection in splitting scheme minimizes a component‐wise Dirichlet energy under the incompressible constraints:…”

Section: Discussionmentioning

confidence: 99%

“…Owen et al [OS14] compare performances of elastic plastic simulations performed on hex‐meshes generated by the grid‐based and the traditional pave‐and‐sweep based approaches. In contrast to previous works that evaluate quality metrics either using a small set of data or lacking verifications in terms of subsequent applications, our work generates a large hex‐mesh dataset and studies the correlations among the quality metrics and between the mesh quality metrics and simulation quality via three important applications, including the linear elasticity problem [NMK∗06], Poisson's equation solving [KBH06] and Stokes equation solving [BB10,ZYZZ15], respectively.…”

Section: Related Workmentioning

confidence: 99%

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Evaluating Hex‐mesh Quality Metrics via Correlation Analysis

Gao

Huang

et al. 2017

Computer Graphics Forum

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Hexahedral (hex‐) meshes are important for solving partial differential equations (PDEs) in applications of scientific computing and mechanical engineering. Many methods have been proposed aiming to generate hex‐meshes with high scaled Jacobians. While it is well established that a hex‐mesh should be inversion‐free (i.e. have a positive Jacobian measured at every corner of its hexahedron), it is not well‐studied that whether the scaled Jacobian is the most effective indicator of the quality of simulations performed on inversion‐free hex‐meshes given the existing dozens of quality metrics for hex‐meshes. Due to the challenge of precisely defining the relations among metrics, studying the correlations among different quality metrics and their correlations with the stability and accuracy of the simulations is a first and effective approach to address the above question. In this work, we propose a correlation analysis framework to systematically study these correlations. Specifically, given a large hex‐mesh dataset, we classify the existing quality metrics into groups based on their correlations, which characterizes their similarity in measuring the quality of hex‐elements. In addition, we rank the individual metrics based on their correlations with the accuracy and stability metrics for simulations that solve a number of elliptic PDE problems. Our preliminary experiments suggest that metrics that assess the conditioning of the elements are more correlated to the quality of solving elliptic PDEs than the others. Furthermore, an inversion‐free hex‐mesh with higher average quality (measured by any quality metrics) usually leads to a more accurate and stable computation of elliptic PDEs. To support our correlation study and address the lack of a publicly available large hex‐mesh dataset with sufficiently varying quality metric values, we also propose a two‐level perturbation strategy to generate the desired dataset from a small number of meshes to exclude the influences of element numbers, vertex connectivity, and volume sizes to our study.

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Section: Discussionmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Evaluating Hex‐mesh Quality Metrics via Correlation Analysis

Gao

Huang

et al. 2017

Computer Graphics Forum

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“…Future development of methods to directly print fully colorized PDMS prosthetics could significantly improve manufacture time and costs for craniofacial prostheses. A number of companies are developing technologies to directly print PDMS 80–82 and new techniques to precisely color complex and soft constructs (such computational hydrographic printing 77 ) offer exciting methods to fully recapitulate the appearance of the prosthetic.…”

Section: 3d-printing For Prosthetic Rehabilitationmentioning

confidence: 99%

3D-Printing Technologies for Craniofacial Rehabilitation, Reconstruction, and Regeneration

et al. 2016

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The treatment of craniofacial defects can present many challenges due to the variety of tissue-specific requirements and the complexity of anatomical structures in that region. 3D-printing technologies provide clinicians, engineers and scientists with the ability to create patient-specific solutions for craniofacial defects. Currently, there are 3 key strategies that utilize these technologies to restore both appearance and function to patients: rehabilitation, reconstruction and regeneration. In rehabilitation, 3D-printing can be used to create prostheses to replace or cover damaged tissues. Reconstruction, through plastic surgery, can also leverage 3D-printing technologies to create custom cutting guides, fixation devices, practice models and implanted medical devices to improve patient outcomes. Regeneration of tissue attempts to replace defects with biological materials. 3D-printing can be used to create either scaffolds or living, cellular constructs to signal tissue-forming cells to regenerate defect regions. By integrating these three approaches, 3D-printing technologies afford the opportunity to develop personalized treatment plans and design-driven manufacturing solutions to improve aesthetic and functional outcomes for patients with craniofacial defects.

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“…Recently, it has been shown how using an optical scanner and computer modulation to tailor the 2D-printed pattern to specific regions can be meticulously achieved to transfer photos onto 3D objects. [14] Here we present how to utilize hydroprinting and silver nanoparticle-based inks to fabricate electrical circuits onto previously inaccessible objects. The process enables the fabrication of conductive patterns and even a whole electrical multilayer circuits.…”

Section: Inroductionmentioning

confidence: 99%

Hydroprinting Conductive Patterns onto 3D Structures

Saada

Layani

Chernevousky

et al. 2017

Adv Materials Technologies

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A novel and facile method for printing functional conductive patterns on 3D objects with unconventional angles using hydroprinting of silver nanoparticles (NPs) ink is developed. Silver NPs ink is inkjet printed on water soluble polyvinyl alcohol films. Sintering at room temperature is achieved by exposing the printed pattern to hydrochloric acid fumes. Electric circuits are hydroprinted at low temperature (50 °C) on various 3D‐printed structures and materials. The conductive patterns are hydroprinted on hard 90° angle objects and are assembled without any presence of sacrificial layer, which allows layer‐by‐layer overlap hydroprinting. In addition, electric Light Emmiting Diode (LED) circuits and heater are successfully hydroprinted. To show the applicability of the process we hydroprinted a fully functional Near Field Communication (NFC) antenna onto a curved object, which was successfully paired with a smartphone. Analysis of hydroprinted patterns shows that the resistivity is 17.1 times higher than silver bulk which is considered suitable in most application.

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Computational hydrographic printing

Cited by 50 publications

References 40 publications

Evaluating Hex‐mesh Quality Metrics via Correlation Analysis

Evaluating Hex‐mesh Quality Metrics via Correlation Analysis

3D-Printing Technologies for Craniofacial Rehabilitation, Reconstruction, and Regeneration

Hydroprinting Conductive Patterns onto 3D Structures

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