A Theoretical and Experimental Research on the Influence of FDM Parameters on Tensile Strength and Hardness of Parts Made of Polylactic Acid

Zisopol, Dragoș Gabriel; Nae, Ion; Portoaca, A. I.; Ramadan, Ibrahim

doi:10.48084/etasr.4311

Cited by 37 publications

(17 citation statements)

References 16 publications

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“…It provides a theoretical basis for structural reinforcement in cold regions [9]. FRP bars have high tensile strength and corrosion resistance, light dead weight and easy construction, so since the 1990s, FRP bars have been used in engineering and replaced steel bolts [10]. At present, the widely used FRP bars mainly include CFRP, AFRP, GFRP, and so on.…”

Section: Literature Reviewmentioning

confidence: 99%

Durability Test and Mechanical Properties of CFRP Bolt under Accelerated Corrosion Conditions

Guo

2022

Journal of Chemistry

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In order to study the influence of acid corrosion on the quality, elastic modulus, tensile strength, elongation, and other properties of epoxy mortar test block and CFRP bolt, the durability test and mechanical properties test of CFRP bolt under accelerated corrosion conditions were proposed. An epoxy mortar test block was soaked in acidic solution for 90 d, and the quality, elastic modulus, tensile strength, elongation, and other properties of CFRP bolt were analyzed. Through the analysis of test data, the load-slip relationship curve of bolt was obtained and the Arrhenius equation was used. The relationship curve between tensile strength retention and logarithm of time in test environment was obtained, and the concept of conversion factor TSF was introduced to predict the strength retention of anchor corroded by acid rain for 20 years in service. The experimental results show that the maximum loss rates of mass, elastic modulus, and compressive strength of epoxy mortar test block are 1.98%, 2.81%, and 11.25%, respectively, during 90 d immersion in acidic solution. The maximum loss rates of mass, elastic modulus, tensile strength, and elongation of CFRP bolt are 0.65%, 3.29%, 6.51%, and 5.06%, respectively. Based on the analysis of the test data, the load-slip curve of the bolt is obtained, which indicates that acid corrosion reduces the bond performance of CFRP bolt. The bond-slip curve of bolt after 90 d acid corrosion was obtained by further analysis of experimental data. Conclusion. The experiment has certain engineering application values.

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Section: Literature Reviewmentioning

confidence: 99%

Durability Test and Mechanical Properties of CFRP Bolt under Accelerated Corrosion Conditions

Guo

2022

Journal of Chemistry

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“…The most commonly used 3D desktop fdm printer was developed by Scott Crump in 1989 and commercialized in mass production by Stratasays. German EOS company has developed computer-aided design (CAD) software for design objects of 3D printers [20]. FDM printer has the advantages of simple structure and operation, low maintenance cost, and safe operation of the hot melt extrusion head system.…”

Section: State Of the Artmentioning

confidence: 99%

Improvement and Experimental Explore on Coordinated Control of Kinematic Mechanism of FDM 3D Printer

2022

Advances in Multimedia

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As the main component of the 3D printing industry, the fused deposition process covers all aspects of the industry with its advantages of low R&D investment, high practicability, and open source programs. However, due to process problems, problems have arisen in terms of printing efficiency and molding quality. To this end, we designed a large-scale multinozzle FDM printing device using the high-current fused deposition (FDM) printing principle. The defects of small size, slow printing speed, and low precision are deeply studied, and the machine structure is optimized according to the structural strength analysis. In this paper, the theoretical design and static analysis of the overall mechanical part of the large-scale FDM device are carried out, and then, the selection of the movement organization structure and movement method is theoretically analyzed. A modular flow chart is designed for the control system to coordinate and control the parallel and precise operation of multiple nozzles, and the relationship function between the main controller, power driver, and heating module is designed. By modifying the firmware parameter command, we can find out the optimal method running on the platform and discuss the function usage of the slicing software in detail. According to the current problems of FDM printing equipment, various factors affecting printing speed were analyzed from the perspective of printing accuracy, and the process parameters of 3D printer were studied through orthogonal experiments. Speed, nozzle temperature, idling speed, and fill rate were studied, and the relationship between factors affecting printing speed and printing accuracy was obtained. Use a simple model print to measure the overall performance of your product. The stability of the system is verified by short-term and long-term printing tests. The analysis results show that the forming performance and stability of the large-scale FDM are improved significantly.

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“…In paper [4], a tensile test was performed on type 4 test specimens, according to the ASTM D638 standard for PLA material. The parameters taken into account during 3D printing are: layer thickness, infill percentage, flow rate.…”

Section: Related Workmentioning

confidence: 99%

Experimental study of tensile strength for 3D printed specimens of HI-PLA polymer material on in-house tensile test machine

Pezer¹,

Vukas²,

Butir³

2022

Technium

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In the paper, a tensile test was performed on in-house made tensile test machine. The test was conducted on 3D printed test samples made according to the ISO 527-2 standard. The samples are made of HI-PLA (High Impact Polylactide) polymer material with pronounced resistance to impact toughness and it is closer, according to its characteristics, to ABS material. The test samples were printed by FDM additive technology with different layer thickness and material filling percentage, and a central composite test plan was carried out. The conducted experiment resulted in stress-strain diagrams for 11 states of the test samples, on the basis of which the tensile strength of the HI-PLA material was calculated. The obtained values were compared with the tensile strength values for ABS material.

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A Theoretical and Experimental Research on the Influence of FDM Parameters on Tensile Strength and Hardness of Parts Made of Polylactic Acid

Cited by 37 publications

References 16 publications

Durability Test and Mechanical Properties of CFRP Bolt under Accelerated Corrosion Conditions

Durability Test and Mechanical Properties of CFRP Bolt under Accelerated Corrosion Conditions

Improvement and Experimental Explore on Coordinated Control of Kinematic Mechanism of FDM 3D Printer

Experimental study of tensile strength for 3D printed specimens of HI-PLA polymer material on in-house tensile test machine

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