Development of elastic–plastic model of additively produced titanium for personalised endoprosthetics

Боровков, А. И.; Маслов, Л. Б.; Tarasenko, F. D.; Zhmaylo, Mikhail; Maslova, Irina; Solovev, Dmitry

doi:10.1007/s00170-021-07460-1

Cited by 5 publications

(4 citation statements)

References 22 publications

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“…However, most likely, the risk of fracture due to fatigue effects may decrease with successful osseointegration and should not have any significant effect thereafter. Regardless, the use of high-quality titanium powders and the application of advanced manufacturing technologies for producing implants [22] should have a high priority in the planning stage for such surgeries.…”

Section: Discussionmentioning

confidence: 99%

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Finite Element Analysis of Customized Acetabular Implant and Bone after Pelvic Tumour Resection throughout the Gait Cycle

et al. 2021

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The aim of this paper is to investigate and compare the stress distribution of a reconstructed pelvis under different screw forces in a typical walking pattern. Computer-aided design models of the pelvic bones and sacrum made based on computer tomography images and individually designed implants are the basis for creating finite element models, which are imported into ABAQUS software. The screws provide compression loading and bring the implant and pelvic bones together. The sacrum is fixed at the level of the L5 vertebrae. The variants of strength analyses are carried out with four different screw pretension forces. The loads equivalent to the hip joint reaction forces arising during moderate walking are applied to reference points based on the centres of the acetabulum. According to the results of the performed analyses, the optimal and critical values of screw forces are estimated for the current model. The highest stresses among all the models occurred in the screws and implant. As soon as the screw force increases up to the ultimate value, the bone tissue might be locally destroyed. The results prove that the developed implant design with optimal screw pretension forces should have good biomechanical characteristics.

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Section: Discussionmentioning

confidence: 99%

“…The screws and prosthetic head should be made of normal solid titanium alloy Ti-6Al-4V [21], and the considered implant is manufactured by 3D printing [22]. The mechanical properties of 3D printed and solid titanium are slightly different, particularly those characterizing the fatigue behaviour [23].…”

Section: Materials Propertiesmentioning

confidence: 99%

Finite Element Analysis of Customized Acetabular Implant and Bone after Pelvic Tumour Resection throughout the Gait Cycle

et al. 2021

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“…EBSD analysis was used to relate this difference to the orientations of α crystallographic variants within prior columnar β grains, which increased the probability of aligning the soft directions to the shear vibration direction. Borovkov et al [55] developed an elastic-plastic model for EBM Ti6Al4V. The model considered three Young's moduli, three shear moduli, and three Poisson's ratios as elastic properties, and six coefficients describing the Hill yield criterion.…”

Section: The Effect Of Polarization Orientation On the Ultrasonic Waveformmentioning

confidence: 99%

Measurement of the Anisotropic Dynamic Elastic Constants of Additive Manufactured and Wrought Ti6Al4V Alloys

et al. 2022

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Additively manufactured (AM) materials and hot rolled materials are typically orthotropic, and exhibit anisotropic elastic properties. This paper elucidates the anisotropic elastic properties (Young’s modulus, shear modulus, and Poisson’s ratio) of Ti6Al4V alloy in four different conditions: three AM (by selective laser melting, SLM, electron beam melting, EBM, and directed energy deposition, DED, processes) and one wrought alloy (for comparison). A specially designed polygon sample allowed measurement of 12 sound wave velocities (SWVs), employing the dynamic pulse-echo ultrasonic technique. In conjunction with the measured density values, these SWVs enabled deriving of the tensor of elastic constants (Cij) and the three-dimensional (3D) Young’s moduli maps. Electron backscatter diffraction (EBSD) and micro-computed tomography (μCT) were employed to characterize the grain size and orientation as well as porosity and other defects which could explain the difference in the measured elastic constants of the four materials. All three types of AM materials showed only minor anisotropy. The wrought (hot rolled) alloy exhibited the highest density, virtually pore-free μCT images, and the highest ultrasonic anisotropy and polarity behavior. EBSD analysis revealed that a thin β-phase layer that formed along the elongated grain boundaries caused the ultrasonic polarity behavior. The finding that the elastic properties depend on the manufacturing process and on the angle relative to either the rolling direction or the AM build direction should be taken into account in the design of products. The data reported herein is valuable for materials selection and finite element analyses in mechanical design. The pulse-echo measurement procedure employed in this study may be further adapted and used for quality control of AM materials and parts.

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“…To overcome the challenges related to increasing carbon emissions, noise and energy consumption in air transportation product development and related manufacturing industry, additive manufacturing (AM) processes are considered one of the best emerging technologies contributing to the fourth industrial revolution. The different AM technologies produce components with special or complex metal alloys, flexible and functional designs, and consequently light weight [1][2][3][4][5]. In addition, the associated AM repair technology also contributes to increase service life by recovering damaged components [6].…”

Section: Introductionmentioning

confidence: 99%

Optimizing laser power of directed energy deposition process for homogeneous AISI M4 steel microstructure

Jardin¹,

Tuninetti²,

Tchuindjang³

et al. 2023

Optics & Laser Technology

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Development of elastic–plastic model of additively produced titanium for personalised endoprosthetics

Cited by 5 publications

References 22 publications

Finite Element Analysis of Customized Acetabular Implant and Bone after Pelvic Tumour Resection throughout the Gait Cycle

Finite Element Analysis of Customized Acetabular Implant and Bone after Pelvic Tumour Resection throughout the Gait Cycle

Measurement of the Anisotropic Dynamic Elastic Constants of Additive Manufactured and Wrought Ti6Al4V Alloys

Optimizing laser power of directed energy deposition process for homogeneous AISI M4 steel microstructure

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