Stereolithography somos 7110 resin: mechanical behavior and fractography of parts post-cured by different methods

Salmoria, Gean Vitor; Ahrens, Carlos Henrique; Fredel, Márcio C.; Soldi, Valdir; Pires, Alfredo T. N.

doi:10.1016/j.polymertesting.2004.09.008

Cited by 53 publications

(46 citation statements)

References 6 publications

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“…The research of Salmoria et al [21] on somos 7110 resin reveals green samples fabricated by stereolithography process have layer ordering microstructures. Using the prototype parts produced by stereolithography to verify the mechanical performance of isotropic-material structure designs, it is vital for us to investigate the degree of anisotropy caused by the nonuniformity existed in the stereolithography produced samples.…”

Section: Mechanical Properties Of Cured Resin Materialsmentioning

confidence: 99%

Backbone cup – a structure design competition based on topology optimization and 3D printing

Zhu

Yang

Zhang

2016

Int. J. Simul. Multisci. Des. Optim.

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-This paper addresses a structure design competition based on topology optimization and 3D Printing, and proposes an experimental approach to efficiently and quickly measure the mechanical performance of the structures designed using topology optimization. Since the topology optimized structure designs are prone to be geometrically complex, it is extremely inconvenient to fabricate these designs with traditional machining. In this study, we not only fabricated the topology optimized structure designs using one kind of 3D Printing technology known as stereolithography (SLA), but also tested the mechanical performance of the produced prototype parts. The finite element method is used to analyze the structure responses, and the consistent results of the numerical simulations and structure experiments prove the validity of this new structure testing approach. This new approach will not only provide a rapid access to topology optimized structure designs verifying, but also cut the turnaround time of structure design significantly.

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Section: Mechanical Properties Of Cured Resin Materialsmentioning

confidence: 99%

Backbone cup – a structure design competition based on topology optimization and 3D printing

Zhu

Yang

Zhang

2016

Int. J. Simul. Multisci. Des. Optim.

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“…In the unaged samples the first scan presents a characteristic feature of exothermic reaction, indicating a possible cross-link due to incomplete cure of the system. Exothermic peaks are related to the cure process, i.e., the energy involved in the cross-linking reaction of resin reactive groups 17 . According to the literature 18,19 , a post cure treatment is necessary for producing stable polymeric systems and for avoiding any residual exothermic reactions.…”

Section: Differential Thermal Analysismentioning

confidence: 99%

The effects of water absorption on an ester vinyl resin system

Sobrinho¹,

Ferreira²,

Bastian³

2009

Mat. Res.

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Derakene is a vinyl ester resin largely employed as matrix for polymeric based composite systems. In this work, the performance of such polymeric system was evaluated considering the effect of hygrothermal aging. The mechanical and thermal properties were examined for the processed material before and after ageing in water at 60 °C for a maximum period of 64 days. Both analyses indicated the occurrence of post cure of the system after 16 days due to exposition at 60 °C in water, which was also confirmed by analyses in samples with post cure treatment. Moreover, it was observed plasticizing of resin after 36 and 64 days of ageing. Micro structural and fracture surface analyses were carried out in order to characterize the samples. The appearance of surface voids was also observed.

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“…Volume shrinkage of the resin is one of the major causes leading to poor accuracy of the fabricated parts [11]. Several studies have been reported aiming at investigating the curing characteristics of photopolymers used in classical lithographic processes [12,13]. For instance, Salmoria et al [14] have investigated the cure process and thermal degradation of a liquid and cured photopolymer used in the stereolithography process.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of solidification induced strains in two resins used in photofabrication

Karalekas

Schizas

2009

Materials & Design

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Stereolithography somos 7110 resin: mechanical behavior and fractography of parts post-cured by different methods

Cited by 53 publications

References 6 publications

Backbone cup – a structure design competition based on topology optimization and 3D printing

Backbone cup – a structure design competition based on topology optimization and 3D printing

The effects of water absorption on an ester vinyl resin system

Monitoring of solidification induced strains in two resins used in photofabrication

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