The Creep of Material Obtained Using SLS Technology

Bochnia, Jerzy; Błasiak, Sławomir

doi:10.17973/mmsj.2020_03_2019122

Cited by 8 publications

(7 citation statements)

References 6 publications

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“…It is important to remember that polymeric materials exhibit relaxation and creep, which requires consideration of their effects in design. Studies that present methods of mathematical description of rheological properties of materials used in soft robotics may [92][93][94] prove helpful.…”

Section: Final Productionmentioning

confidence: 99%

3D/4D Printing in Advanced Robotics Systems—Recent Developments and Applications

Błasiak¹,

Bochnia²,

Takosoglu³

et al. 2023

Preprint

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3D/4D printing technologies are currently among the fastest growing, cutting edge fabrication technologies. The scale of their applications is vast and applicable to nearly all industries. 3D printing technologies are particularly popular in robotics, and especially in advanced design innovative solutions for areas such as manufacturing, space technology and medicine. The development of robotics, and in particular of the precision of manufactured components, such as actuators, pneumatic muscles, power transmission units, etc., means that new prototypes are still being made, where the use of 3D printers reduces the production time severalfold and allows for completing the necessary simulations and tests. In addition, the use of 3D printers allows for the production of thin-walled and cellular structures, which is a great advantage compared to conventional fabrication technologies. In the range of 3D printers available on the market, only a few selected technologies allow for actual use in the construction of advanced robot elements (muscles, vibration dampers, etc.). In the era of rapid growth of the precision of the available 3D printers and modern materials, 3D printing may soon become a major tool in robotics. This article presents an overview of 3D printing technologies and materials in terms of their application in robotics and provides examples of the use of 3D and 4D printing in prototyping and fabrication of robotic elements with particular emphasis on the current state of the art. The study considered the possibilities of using 3D/4D printing in robotics with the use of polymeric materials. The review of the literature and the research work currently being carried out in this area is very promising and it seems that 3D/4D printing in robotics is widely used and is still developing, which allows to conclude that in the near future the number of research works in this field will increase rapidly.

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Section: Final Productionmentioning

confidence: 99%

3D/4D Printing in Advanced Robotics Systems—Recent Developments and Applications

Błasiak¹,

Bochnia²,

Takosoglu³

et al. 2023

Preprint

View full text Add to dashboard Cite

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“…Knowledge of this behaviour is fundamental in order to minimise consequent failures in components, mechanisms, connections that are subjected to long service life (Bochnia et al, 2022;Kozior, Bochnia, et al, 2022). The rheological properties of materials are generally identified by comparing them with perfect-body models (Bochnia et al, 2022;Bochnia & Blasiak, 2020;Szot, 2023). The creep behaviour of a material can be characterised by the Kelvin-Voight model (Bochnia et al, 2022;Bochnia & Blasiak, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…The rheological properties of materials are generally identified by comparing them with perfect-body models (Bochnia et al, 2022;Bochnia & Blasiak, 2020;Szot, 2023). The creep behaviour of a material can be characterised by the Kelvin-Voight model (Bochnia et al, 2022;Bochnia & Blasiak, 2020). In the publication (Bochnia & Blasiak, 2020) , the authors investigated the influence of print directions (XZ, YZ, XY) on the creep behaviour.…”

Section: Introductionmentioning

confidence: 99%

“…The creep behaviour of a material can be characterised by the Kelvin-Voight model (Bochnia et al, 2022;Bochnia & Blasiak, 2020). In the publication (Bochnia & Blasiak, 2020) , the authors investigated the influence of print directions (XZ, YZ, XY) on the creep behaviour. The five-parameter Kelvin-Voight model was fitted to description of the phenomenon.…”

Section: Introductionmentioning

confidence: 99%

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Influence of 3D printing technological parameter number of shells on selected mechanical properties in FDM/FFF technology

Szot

Rudnik

2023

Preprint

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The technological parameters of 3D printing have a significant impact on the mechanical properties including rheological properties of models produced by additive technology. Research on the influence of these parameters is important for designers who design machine components. Therefore, this article presents extensive research on the influence of the 3D printing technological parameter of the number of shells (2 and 10) on selected mechanical properties. Two different types of specimens produced by FDM (Fused Deposition Modelling) technology were used from PLA material. The selected mechanical properties were tensile strength, flexural strength and creep phenomenon. The five-parameter Kelvin-Voight model was used to describe the creep curve obtained from the tests. Very good fits were obtained, which allows us to recommend the obtained results for engineering calculations. The research results presented in this article showed that for both tensile strength, flexural strength and creep phenomenon, higher values were obtained for the number of shells 10 compared to the number of shells 2.

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“…In [8,9], Bochnia et al deal with the rheological properties of polymer specimens fabricated through SLS. The rheological data, i.e., stress relaxation and creep, predicted using the Maxwell-Wiechert and the Kelvin-Voigt models, respectively, were in agreement with the experimental results.…”

Section: Introductionmentioning

confidence: 99%

Geometry, Structure and Surface Quality of a Maraging Steel Milling Cutter Printed by Direct Metal Laser Melting

2022

Self Cite

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This article considers the use of additive manufacturing to produce cutting tools for various machining operations, especially turning, milling, and drilling. The right geometry and material of the tool as well as coatings applied on cutting edges are crucial as they improve the life and performance of the tool. The study described here focused on a four-flute end mill made of maraging steel 1.2709 using a Concept Laser M2 Cusing Direct Metal Laser Melting (DMLM) machine. Before the printed tool was first used, it was examined to determine its dimensional and geometric accuracy, surface roughness, and surface structure. The measurement data showed that the tool required machining, e.g., grinding, to improve its geometry because the total runout of the shank and the cutting edge radius were too high, amounting to 120 μm and 217 μm, respectively. The cutting edges were sharpened to obtain a fully functional cutting tool ready to perform milling operations. The study aimed to check the dimensional and geometric accuracy of the 3D printed milling cutter and determine the optimal machining allowance for its finishing.

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The Creep of Material Obtained Using SLS Technology

Cited by 8 publications

References 6 publications

3D/4D Printing in Advanced Robotics Systems—Recent Developments and Applications

3D/4D Printing in Advanced Robotics Systems—Recent Developments and Applications

Influence of 3D printing technological parameter number of shells on selected mechanical properties in FDM/FFF technology

Geometry, Structure and Surface Quality of a Maraging Steel Milling Cutter Printed by Direct Metal Laser Melting

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