Optimization of a self-peeling vat for precision vat photopolymerization setups

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Abstract

This paper presents the optimization of a state-of-the-art self-peeling vat for vat photopolymerization (VP) processes. One of the research goals of the Additive Manufacturing (AM) group from the Technical University of Denmark is to achieve the highest resolution, maximum precision and process optimization for the AM machines and the fabricated components. To achieve this goal, it is essential to have control over every single stage of the manufacturing process. One concern mayor concern in VP is the vat performance, which has to withstand with adhesion forces and wear. The previous setup designed by this research group already outperformed industrial vats by 814% [1], by lowering the normal forces induced by the adhesion between the vat and the part with the aid of a flexible membrane system. Although an improvement on the release-capability was achieved, failure was found in several materials with higher material bonding, which ultimately deformed the surface of the parts. In this work, optimization is achieved by increasing the surface area of the vat, diminishing the stress on the membrane. The building area is moved from the center which creates different peeling angles on each side of the part. The angle asymmetry combines easy peeling with low forces, together with an induced passive tilting mechanism that leads to higher quality of the manufactured samples when microfeatures are present.
Original languageEnglish
Title of host publicationProceedings of the 19th International Conference and Exhibition (EUSPEN 2019)
EditorsC. Nisbet, R. K. Leach , D. Billington, D. Phillips
PublisherThe European Society for Precision Engineering and Nanotechnology
Publication date2019
Pages234-237
ISBN (Electronic)978-099577514-5
Publication statusPublished - 2019
Eventeuspen's 19th International Conference & Exhibition - Bilbao, Spain
Duration: 3 Jun 20197 Jun 2019

Conference

Conferenceeuspen's 19th International Conference & Exhibition
CountrySpain
CityBilbao
Period03/06/201907/06/2019

Keywords

  • Vat photopolymerization
  • Additive manufacturing
  • Surface adhesion
  • FEP membrane

Cite this

M. Ribo, M., Danielak, A. H., Islam, A., & Pedersen, D. B. (2019). Optimization of a self-peeling vat for precision vat photopolymerization setups. In C. Nisbet, R. K. Leach , D. Billington, & D. Phillips (Eds.), Proceedings of the 19th International Conference and Exhibition (EUSPEN 2019) (pp. 234-237). The European Society for Precision Engineering and Nanotechnology.
M. Ribo, Macarena ; Danielak, Anna H. ; Islam, Aminul ; Pedersen, David B. / Optimization of a self-peeling vat for precision vat photopolymerization setups. Proceedings of the 19th International Conference and Exhibition (EUSPEN 2019). editor / C. Nisbet ; R. K. Leach ; D. Billington ; D. Phillips . The European Society for Precision Engineering and Nanotechnology, 2019. pp. 234-237
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abstract = "This paper presents the optimization of a state-of-the-art self-peeling vat for vat photopolymerization (VP) processes. One of the research goals of the Additive Manufacturing (AM) group from the Technical University of Denmark is to achieve the highest resolution, maximum precision and process optimization for the AM machines and the fabricated components. To achieve this goal, it is essential to have control over every single stage of the manufacturing process. One concern mayor concern in VP is the vat performance, which has to withstand with adhesion forces and wear. The previous setup designed by this research group already outperformed industrial vats by 814{\%} [1], by lowering the normal forces induced by the adhesion between the vat and the part with the aid of a flexible membrane system. Although an improvement on the release-capability was achieved, failure was found in several materials with higher material bonding, which ultimately deformed the surface of the parts. In this work, optimization is achieved by increasing the surface area of the vat, diminishing the stress on the membrane. The building area is moved from the center which creates different peeling angles on each side of the part. The angle asymmetry combines easy peeling with low forces, together with an induced passive tilting mechanism that leads to higher quality of the manufactured samples when microfeatures are present.",
keywords = "Vat photopolymerization, Additive manufacturing, Surface adhesion, FEP membrane",
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M. Ribo, M, Danielak, AH, Islam, A & Pedersen, DB 2019, Optimization of a self-peeling vat for precision vat photopolymerization setups. in C Nisbet, RK Leach , D Billington & D Phillips (eds), Proceedings of the 19th International Conference and Exhibition (EUSPEN 2019). The European Society for Precision Engineering and Nanotechnology, pp. 234-237, euspen's 19th International Conference & Exhibition , Bilbao, Spain, 03/06/2019.

Optimization of a self-peeling vat for precision vat photopolymerization setups. / M. Ribo, Macarena; Danielak, Anna H.; Islam, Aminul; Pedersen, David B.

Proceedings of the 19th International Conference and Exhibition (EUSPEN 2019). ed. / C. Nisbet; R. K. Leach ; D. Billington; D. Phillips . The European Society for Precision Engineering and Nanotechnology, 2019. p. 234-237.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearchpeer-review

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N2 - This paper presents the optimization of a state-of-the-art self-peeling vat for vat photopolymerization (VP) processes. One of the research goals of the Additive Manufacturing (AM) group from the Technical University of Denmark is to achieve the highest resolution, maximum precision and process optimization for the AM machines and the fabricated components. To achieve this goal, it is essential to have control over every single stage of the manufacturing process. One concern mayor concern in VP is the vat performance, which has to withstand with adhesion forces and wear. The previous setup designed by this research group already outperformed industrial vats by 814% [1], by lowering the normal forces induced by the adhesion between the vat and the part with the aid of a flexible membrane system. Although an improvement on the release-capability was achieved, failure was found in several materials with higher material bonding, which ultimately deformed the surface of the parts. In this work, optimization is achieved by increasing the surface area of the vat, diminishing the stress on the membrane. The building area is moved from the center which creates different peeling angles on each side of the part. The angle asymmetry combines easy peeling with low forces, together with an induced passive tilting mechanism that leads to higher quality of the manufactured samples when microfeatures are present.

AB - This paper presents the optimization of a state-of-the-art self-peeling vat for vat photopolymerization (VP) processes. One of the research goals of the Additive Manufacturing (AM) group from the Technical University of Denmark is to achieve the highest resolution, maximum precision and process optimization for the AM machines and the fabricated components. To achieve this goal, it is essential to have control over every single stage of the manufacturing process. One concern mayor concern in VP is the vat performance, which has to withstand with adhesion forces and wear. The previous setup designed by this research group already outperformed industrial vats by 814% [1], by lowering the normal forces induced by the adhesion between the vat and the part with the aid of a flexible membrane system. Although an improvement on the release-capability was achieved, failure was found in several materials with higher material bonding, which ultimately deformed the surface of the parts. In this work, optimization is achieved by increasing the surface area of the vat, diminishing the stress on the membrane. The building area is moved from the center which creates different peeling angles on each side of the part. The angle asymmetry combines easy peeling with low forces, together with an induced passive tilting mechanism that leads to higher quality of the manufactured samples when microfeatures are present.

KW - Vat photopolymerization

KW - Additive manufacturing

KW - Surface adhesion

KW - FEP membrane

M3 - Conference abstract in proceedings

SP - 234

EP - 237

BT - Proceedings of the 19th International Conference and Exhibition (EUSPEN 2019)

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A2 - Leach , R. K.

A2 - Billington, D.

A2 - Phillips , D.

PB - The European Society for Precision Engineering and Nanotechnology

ER -

M. Ribo M, Danielak AH, Islam A, Pedersen DB. Optimization of a self-peeling vat for precision vat photopolymerization setups. In Nisbet C, Leach RK, Billington D, Phillips D, editors, Proceedings of the 19th International Conference and Exhibition (EUSPEN 2019). The European Society for Precision Engineering and Nanotechnology. 2019. p. 234-237