Experimental Evaluation of Mechanical Properties and Machine Process in Fused Deposition Modelling Printed Polymeric Elements

Brischetto, Salvatore; Torre, Roberto; Ferro, C.

doi:10.1007/978-3-030-20216-3_35

Cited by 10 publications

(15 citation statements)

References 5 publications

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“…The mean value µ and the standard deviationσ have been calculated for all the 11 specimens in order to perform a capability analysis in the long period (see the first part of Table 8) and for each family in order to perform a potential or within capability analysis carried out in the short period (see the second and third part of Table 8). In general, a process is usually more stable in the short period with respect to the long period [41]. This feature is not confirmed by the values for standard deviationσ, C p and P p proposed in the related table and figure and also by the observation of the Gaussian curves for overall and within periods proposed in the process capability report shown in Figure 19.…”

Section: Mechanical Properties From Compression Testmentioning

confidence: 78%

“…First of all, for an appropriate capability analysis, it is important to understand if the collected data can be represented using a normal distribution [41]. This information is provided in Table 5 and in Figures 9-11 via two indexes defined as AD-value (Anderson Darling value) and the P-value (Probability value).…”

Section: Geometrical Data Of Specimens For Tensile Testmentioning

confidence: 99%

“…The main geometrical data of specimens used for the compression test have been collected in Table 2 where the families of the printed specimens are clearly indicated. These data will be here used for the appropriate capability analysis [41].…”

Section: Geometrical Data Of Specimens For Compression Testmentioning

confidence: 99%

“…The mechanical properties obtained from the tensile tests have been grouped in Table 3, the first column gives the tested specimens and in parentheses there is the related family, the second column shows the linear elastic Young modulus for each specimen, the third column gives the ultimate tensile strength and the last column shows the proportional limit stress. These data will be used in this section to perform the appropriate capability analysis [41]. The capability analysis is performed using a normal distribution for the presented data.…”

Section: Mechanical Properties From Tensile Testmentioning

confidence: 99%

“…In this way, the orthotropic behavior hypothesis could be used to determine the nine basic engineering constants to define the 3D matrix of elastic coefficients; this matrix could be useful for the Finite Element analysis of structural parts of a small 3D printed drone. In order to correctly perform the experimental mechanical characterization of FDM printed ABS and PLA specimens, it is important to evaluate the machine process in terms of statistical parameters as given in [41]. In [42,43], different sandwich configurations were preliminary investigated; homogenous and honeycomb cores were printed and PLA and/or ABS were used for the core and for the skins.…”

Section: Introductionmentioning

confidence: 99%

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Tensile and Compressive Behavior in the Experimental Tests for PLA Specimens Produced via Fused Deposition Modelling Technique

Brischetto

Torre

2020

J. Compos. Sci.

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In this paper, polymeric specimens are produced via the Fused Deposition Modelling (FDM) technique. Then, experimental tensile and compression tests are conducted to evaluate the main mechanical properties of elements made of PolyLacticAcid (PLA) material. A standardized characterization test method for FDM 3D printed polymers has not been developed yet. For this reason, the ASTM D695 (usually employed for polymers produced via classical methods) has been here employed for FDM 3D printed polymers after opportune modifications suggested by appropriate experimental checks. A statistical analysis is performed on the geometrical data of the specimens to evaluate the machine process employed for the 3D printing. A capability analysis is also conducted on the mechanical properties (obtained from the experimental tests) in order to calculate acceptable limits useful for possible structural analyses. The Young modulus, the proportional limit and the maximum strength here defined for PLA specimens allow to confirm the different behavior of FDM printed PLA material in tensile and compressive state. These differences and the calculated acceptable limits for the found mechanical properties must be considered when this technology will be employed for the design of small structural objects made of PLA, as in the present study, or ABS (Acrilonitrile Butadiene Stirene). From the statistical and capability analysis, the employed printing process appears as quite stable and replicable. These types of research together with other similar ones that will be conducted in the future will allow to use polymeric materials and the FDM technique to produce small structural elements and also to carry out the appropriate verifications.

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Section: Mechanical Properties From Compression Testmentioning

confidence: 78%

Section: Geometrical Data Of Specimens For Tensile Testmentioning

confidence: 99%

Section: Geometrical Data Of Specimens For Compression Testmentioning

confidence: 99%

Section: Mechanical Properties From Tensile Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tensile and Compressive Behavior in the Experimental Tests for PLA Specimens Produced via Fused Deposition Modelling Technique

Brischetto

Torre

2020

J. Compos. Sci.

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Using simple estimates for the flexural stiffness of thick FDM beams based on sandwich beam models

Córdoba

Vallejo

Millán

et al. 2020

RPJ

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Purpose The incipient growth of the fused deposition modeling (FDM) techniques encourages the development of models to predict the behavior of these parts involving complicated and heterogeneous geometries whose behavior strongly diverges from the continuous model hypothesis. This paper aims to address the problem of predicting the flexural properties of FDM parts building on the geometrical similarity between a typical FDM part and a sandwich panel. Design/methodology/approach This paper takes advantage of the morphological similarity between FDM structures and composite sandwich panels. Thus, an approach based on classic sandwich theory is developed to validate its goodness to predict the flexural behavior of FDM parts. A set of tensile and flexural tests for FDM parts were conducted varying the density of the core pattern (10%, 15%, 20% and 25%), being the proposed model and the predicted results validated. Findings The results showed a good accordance between the predicted values of stiffness and the experimental data. Although this is especially evidenced for low infill density values, for densities above 20% the experimental values noticeably exceed the maximum predicted stiffness, which can be explained by the non-compliance of the foil honeycomb hypothesis for high-density patterns. The main implication of these findings lies in the possibility of using advanced models from thin-foil structures as a base to develop accurate analytical approaches to model FDM structures. Originality/value Although the experimental characterization of FDM parts has been a matter of study in the literature, the development of robust theoretical models that consider the influence of the particular morphology of these parts is still a challenge in this field. The approach proposed in this study constitutes the first step to develop a complete analytical model to predict the complex behavior of FDM printed parts.

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Análise Da Influência Do Padrão De Preenchimento E Da Altura De Camada De Deposição Nas Propriedades Mecânicas De Peças Fabricadas Em Pla a Partir De Impressão 3d

Pereira

Jesus

Valverde

et al. 2021

DRIUFT

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A manufatura aditiva alterar as propriedades mecânicas do polímero extrudado, além disso, os parâmetros de impressão 3D influenciam na resistência da peça extrudada. Por isso, este trabalho tem o objetivo de analisar a influência dos parâmetros de impressão 3D nas propriedades mecânicas de corpos de prova produzidos em PLA (Poli Ácido Lático). Foram confeccionados quatro corpos de prova na impressora modelo 3D Cloner DH Plus, variando padrão de preenchimento (hexagonal e linha) e altura de camada (0,1mm e 0,35mm). O ensaio de tração foi realizado a uma velocidade de 5 mm/min. Uma análise estática foi realizada utilizando o SolidWorks Simulation. Os corpos de prova com maior altura de camada foram os que apresentaram maior deformação. A configuração que apresentou menos resistência foi a peça fabricada com padrão hexagonal e menor altura de camada, enquanto que a peça fabricada com padrão em linhas e menor altura de camada teve a maior força aplicada. Isso mostra que a resistência está relacionada com o padrão de preenchimento. Os resultados foram satisfatórios, o que motiva a realização de mais trabalhos na área de impressão

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Experimental Evaluation of Mechanical Properties and Machine Process in Fused Deposition Modelling Printed Polymeric Elements

Cited by 10 publications

References 5 publications

Tensile and Compressive Behavior in the Experimental Tests for PLA Specimens Produced via Fused Deposition Modelling Technique

Tensile and Compressive Behavior in the Experimental Tests for PLA Specimens Produced via Fused Deposition Modelling Technique

Using simple estimates for the flexural stiffness of thick FDM beams based on sandwich beam models

Análise Da Influência Do Padrão De Preenchimento E Da Altura De Camada De Deposição Nas Propriedades Mecânicas De Peças Fabricadas Em Pla a Partir De Impressão 3d

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