Product Development and its Comparative Analysis by SLA, SLS and FDM Rapid Prototyping Processes

Choudhari, Chandrashekhar; Patil, Veerandra

doi:10.1088/1757-899x/149/1/012009

Cited by 34 publications

(25 citation statements)

References 6 publications

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“…In particular, the emergence of the new Polycast polymer, which is popular for FDM in the foundry industry [ 27 ]. The obvious advantages of using FDM are the low cost of consumables [ 28 ] and machines compared to SLA, the wide range of machines, and easiness of pattern preparation [ 29 ]. The disadvantages of FDM are the low dimensional accuracy (±127 µm) as compared to SLA (±50 µm) [ 21 ], rough surface [ 30 ], and longer printing time, if high accuracy is aimed at.…”

Section: Role Of Additive Manufacturing In Icmentioning

confidence: 99%

Application of Stereolithography Based 3D Printing Technology in Investment Casting

2020

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Advanced methods for manufacturing high quality parts should be used to ensure the production of competitive products for the world market. Investment casting (IC) is a process where a wax pattern is used as a sacrificial pattern to manufacture high precision casting of solid metal parts. Rapid casting is in turn, a technique that eases the IC process by combining additive manufacturing (AM) technologies with IC. The use of AM technologies to create patterns for new industrial products is a unique opportunity to develop cost-effective methods for producing investment casting parts in a timely manner. Particularly, stereolithography (SLA) based AM is of interest due to its high dimensional accuracy and the smooth surface quality of the printed parts. From the first appearance of commercially available SLA printers in the market, it took a few decades until desktop SLA printers became available to consumers at a reasonable price. Therefore, the aim of this review paper is to analyze the state-of-the-art and applicability of SLA based 3D printing technology in IC manufacturing, as SLA based AM technologies have been gaining enormous popularity in recent times. Other AM techniques in IC are also reviewed for comparison. Moreover, the SLA process parameters, material properties, and current issues are discussed.

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Section: Role Of Additive Manufacturing In Icmentioning

confidence: 99%

Application of Stereolithography Based 3D Printing Technology in Investment Casting

2020

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“…In PLS, complex 3D components are manufactured through the coalescence of layers of the materials using a high-energy laser beam. The operation of DMLS and PLS is similar; however, for the latter process, the materials are preheated before the actual printing [6]. A typical PLS set-up is as illustrated in Figure 4.…”

Section: Polymer Laser Sinteringmentioning

confidence: 99%

“…The polymer laser sintering process is one of the most widely used AM technologies for polymeric materials because of its ability to develop parts with good surface finish, high dimensional accuracy, sufficient geometrical accuracy, and good mechanical properties [1,11]. The process does not require the need for support structures as is the case with Most of printers require significant space and are commonly utilized for industrial applications Reduced lead time compared to SLS [5] The tensile strength of printed components is much less than for injection moulded counterparts [6] Capable of deposition of diverse materials, which include polycarbonate, acrylonitrile butadiene styrene, and polylactic acid polymers [6] Affected by lack of homogeneity in diverse materials, which reduces the mechanical strength of printed parts [6]…”

Section: Polymer Laser Sinteringmentioning

confidence: 99%

“…Does not require support structures The industrial equipment is expensive Capable of printing intricately shaped components with a significantly geometrical accuracy compared to FDM [5] Has long throughput time, especially for large or geometrically complex works [5] Smooth surfaces are achieved Machines must be cleaned thoroughly when changing material to avoid contamination Parts printed have better tensile strengths than the ones manufactured using FDM [6] Management of powder inventory is sophisticated Powder can be reused, which saves production cost Limited array of suitable polymeric materials, with polyamide (PA) contributing to about 95% of all polymers used for SLS [7] Powder dust is a challenge, which calls for frequent cleaning using vacuum cleaners 3 Advances in Polymer Technology FDM. This reduces post processing production time and cost.…”

Section: Advantages Disadvantagesmentioning

confidence: 99%

“…Cooling-step Building-step Figure 6: The heating profile of polymeric material during SLS [21]. 5 Advances in Polymer Technology Wudy et al [7] indicate that the behaviour of PP and PA-12 is almost similar when subjected to PLS process.…”

Section: Chemical Deterioration Of Polymers Due To Highmentioning

confidence: 99%

See 2 more Smart Citations

A Review of Methods Used to Reduce the Effects of High Temperature Associated with Polyamide 12 and Polypropylene Laser Sintering

Mwania

Maringa

Walt

2020

Advances in Polymer Technology

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The polymer laser sintering (PLS) process is one of the most promising additive manufacturing (AM) technologies for polymeric materials. However, the technique has challenges because the physical, mechanical, and chemical properties of the polymeric powder deteriorate due to the high temperatures prevailing in the build chamber during manufacture. These high temperatures cause agglomeration of powder, which leads to a decrease in the flowability of powder. There is also a related drop in the coalescence of the powder granules during PLS, which results in porosity that undermines the mechanical integrity of printed parts. Moreover, the viscosity of the melt increases due to cross-linking of molecular chains. This, in turn, increases the tensile strength of the printed components at the expense of the percentage elongation at break. Thus, high prolonged processing temperatures decrease the reusability of polymeric materials used in PLS. In this paper, a review of the studies conducted to investigate ways of reducing the effects of high temperature on polymeric powders is presented.

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Silicone–Epoxy‐Based Hybrid Photopolymers for 3D Printing

Zhao

et al. 2018

Macro Chemistry & Physics

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In the present research, a type of cycloaliphatic silicone–epoxy resin is synthesized and then compounded with acrylates as well as photoinitiators to obtain hybrid photopolymers. The photocuring rate of the hybrid photopolymers, the morphology, thermal and mechanical properties of the cured samples with different silicone–epoxy/acrylate ratios are studied in detail. Scanning electron microscopy images prove that interpenetrating polymer network structure is formed. To improve the mechanical properties, diglycidyl ether of bisphenol A is added and finally a type of hybrid photopolymer suitable for stereolithography 3D printing is obtained. Fourier‐transform infrared spectroscopy and photo‐differential scanning calorimeter measurements show that the hybrid photopolymer has a high curing rate, while thermal property tests prove that the cured sample has high thermal stability. Mechanical property tests show that the cured samples have a tensile strength of 40.3 MPa with a break elongation of 6.7%. The objects printed with the hybrid photopolymer exhibit high resolution and dimension accuracy.

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Product Development and its Comparative Analysis by SLA, SLS and FDM Rapid Prototyping Processes

Cited by 34 publications

References 6 publications

Application of Stereolithography Based 3D Printing Technology in Investment Casting

Application of Stereolithography Based 3D Printing Technology in Investment Casting

A Review of Methods Used to Reduce the Effects of High Temperature Associated with Polyamide 12 and Polypropylene Laser Sintering

Silicone–Epoxy‐Based Hybrid Photopolymers for 3D Printing

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