Effect of the Pore Shape and Size of 3D-Printed Open-Porous ABS Materials on Sound Absorption Performance

Monková, Katarína; Vašina, Martin; Monka, Peter; Kozak, Dražan; Vanca, Ján

doi:10.3390/ma13204474

Cited by 15 publications

(9 citation statements)

References 61 publications

(61 reference statements)

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“…In general, the displacement in loading direction had values appropriate to other studies focused on tibio-femoral joints [ 61 ]. Using special micro-devices, further in vivo investigation of displacement after osseocartilaginous reconstruction could be developed [ 62 , 63 , 64 , 65 ].…”

Section: Discussionmentioning

confidence: 99%

Finite Element Analysis of Different Osseocartilaginous Reconstruction Techniques in Animal Model Knees

et al. 2023

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Lesions of the articular cartilage are frequent in all age populations and lead to functional impairment. Multiple surgical techniques have failed to provide an effective method for cartilage repair. The aim of our research was to evaluate the effect of two different compression forces on three types of cartilage repair using finite element analysis (FEA). Initially, an in vivo study was performed on sheep. The in vivo study was prepared as following: Case 0—control group, without cartilage lesion; Case 1—cartilage lesion treated with macro-porous collagen implants; Case 2—cartilage lesion treated with collagen implants impregnated with bone marrow concentrate (BMC); Case 3—cartilage lesion treated with collagen implants impregnated with adipose-derived stem cells (ASC). Using the computed tomography (CT) data, virtual femur-cartilage-tibia joints were created for each Case. The study showed better results in bone changes when using porous collagen implants impregnated with BMC or ASC stem cells for the treatment of osseocartilaginous defects compared with untreated macro-porous implant. After 7 months postoperative, the presence of un-resorbed collagen influences the von Mises stress distribution, total deformation, and displacement on the Z axis. The BMC treatment was superior to ASC cells in bone tissue morphology, resembling the biomechanics of the control group in all FEA simulations.

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Section: Discussionmentioning

confidence: 99%

Finite Element Analysis of Different Osseocartilaginous Reconstruction Techniques in Animal Model Knees

et al. 2023

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“…As the length of the polymer macromolecules decreases, the flowability of the melt or the melt flow index increases and conversely the strength and stiffness of the material goes down. [13] In practice, the method of establishing the melt flow index is used to monitor possible variations in molecular weight of the polymer supplied from chemical works. Based on this method, it is possible to quickly evaluate the quality of the input material and hence eliminate the production of nonconforming parts.…”

Section: Establishing the Melt Volume Rate (Mvr)mentioning

confidence: 99%

Effect of Technological Waste on Rheological Properties of the Polymer Composite

Dobránsky¹,

Pollák²,

Kočiško³

et al. 2021

Manufacturing Technology

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The production of automotive products from polymeric materials represents operations associated with the flow of material during its shaping to the desired final mold. The technological aspects of the processing of polymeric materials are closely related to the rheological properties. The article deals with adding technological waste from production to virgin material and its influence on rheological or flow properties of selected polymer composite. The analyzed material is used in the manufacture of components (connectors) in the automotive industry. The rheological properties were measured in two stages. In the first stage, rheological properties were assessed in the short term immediately after preparation of the test samples. In the second stage, half of the samples were exposed to elevated temperature and the effect of aging on the rheological properties of the material was monitored. Based on measured MVR values before exposure to elevated temperature, it can be said that the amount of process waste does not significantly affect the flow properties of the polymer. After exposure to elevated temperature, there is a significant decrease in polymer flow properties probably due to the crystallization of the macromolecular chain.

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“…6 And therefore, structural designs based on the mechanism of local resonance have been incorporated into fabrication of impedance transition structure, cavity resonance structure, particle filling structure, and phononic crystal structure. 2 The cavity shape has an important influence on the sound absorption performance of the whole material, [8][9][10] and the frequency at which the sound absorption coefficient has the maximum value is the resonant frequency of the cavity. In recent years, rubber-like media with cavities have become a favorable candidate for noise control applications, anechoic coatings, and acoustic metamaterials.…”

Section: Introductionmentioning

confidence: 99%

Improved low-frequency sound absorption of porous silicone rubber resonance sheet with periodic cavities

Peng

Zhao

Cheng

et al. 2022

Journal of Low Frequency Noise, Vibration and Active Control

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Since the development of advanced sound absorption material is highly critical in noise control applications, anechoic coatings, and acoustic metamaterials, both fabrication technology and structure design are significant in the achievement of broadband and strong absorption performance in the low sound frequency range. In this work, the silicone rubber resonance absorption sheet with periodic cavities is prepared via inserting cylindrical steel strips with different diameters into the non-vulcanized colloid. Effects of size and arrangement of cavities on the sound absorption properties, as well as the corresponding mechanical properties, are investigated and discussed. Results indicate that periodic pattern designs could further improve the low-frequency sound absorption performance of silicone rubber foams, and increasing the cavity diameter could significantly improve the sound absorption efficiency of the prepared samples in the middle- and low-frequency range from 125 to 2000 Hz. Particularly, increasing the number of the layered cavities could also improve the sound absorption efficiency. The consumption of sound energy in the prepared silicone rubber resonance sheet is discussed, which could be attributed to the synergistic effect in different spatial scales.

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Effect of the Pore Shape and Size of 3D-Printed Open-Porous ABS Materials on Sound Absorption Performance

Cited by 15 publications

References 61 publications

Finite Element Analysis of Different Osseocartilaginous Reconstruction Techniques in Animal Model Knees

Finite Element Analysis of Different Osseocartilaginous Reconstruction Techniques in Animal Model Knees

Effect of Technological Waste on Rheological Properties of the Polymer Composite

Improved low-frequency sound absorption of porous silicone rubber resonance sheet with periodic cavities

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