Fatigue behavior of Ti6Al4V and 316 LVM blasted with ceramic particles of interest for medical devices

Barriuso, Sandra; Chao, Jesús; Jiménez, José Antonio; Garcia, Salvador; González-Carrasco, José Luis

doi:10.1016/j.jmbbm.2013.10.013

Cited by 30 publications

(12 citation statements)

References 30 publications

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“…Most of the previous studies on the fatigue behavior of open-cell metal foams [16][17][18][19][20][21] and additively manufactured lattice structures [13,22,23] have been purely experimental.…”

Section: Introductionmentioning

confidence: 99%

Computational prediction of the fatigue behavior of additively manufactured porous metallic biomaterials

Hedayati

Hosseini‐Toudeshky

Sadighi

et al. 2016

International Journal of Fatigue

113

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The mechanical behavior of additively manufactured porous biomaterials has recently received increasing attention. While there is a relatively large body of data available on the static mechanical properties of such biomaterials, their fatigue behavior is not yet well-understood. That is partly because systematic study of the fatigue behavior of these porous biomaterials is time-consuming and expensive due to the large number of involved factors. In the current study, we propose a computational approach based on finite element method that could be used to predict the fatigue behavior of porous biomaterials given their type of repeating unit cell, dimensions of the unit cell, and S-N curve of the parent material. We applied the proposed approach to predict the fatigue behavior of porous titanium alloy (Ti-6Al-4V) biomaterials manufactured using selective laser melting based on the rhombic dodecahedron unit cell and compared our computational results with experimental observations from one of our recent studies. The evolution of the displacement, elastic modulus, and number of failed struts vs. the number of loading cycle followed a two-stage pattern. In the first stage, there was a relatively slow rate of change in the above-mentioned variables, while they changed very rapidly in the second stage. That compares to the behavior observed in our experimental study. The computationally predicted S-N curve well matched the experimental observations for stress levels not exceeding 60% of the yield stress of the porous structures. For higher stress levels, the presented approach substantially underestimated the fatigue life of the porous structures. The effects of the irregularities caused by the additive manufacturing process on the fatigue behavior of the porous structures were also studied. It was found that those irregularities substantially decrease the fatigue life particularly for lower stress levels.

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Section: Introductionmentioning

confidence: 99%

Computational prediction of the fatigue behavior of additively manufactured porous metallic biomaterials

Hedayati

Hosseini‐Toudeshky

Sadighi

et al. 2016

International Journal of Fatigue

113

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“…In a previous work [4] it has been shown that fatigue resistance of the 316 LVM steel (~400 MPa) is very close to the yield strength value (430 MPa). Interestingly, whereas blasting with zirconia rounded particles causes a moderated increase in the fatigue limit (~420 MPa), blasting with angular alumina particles yields a significant decrease (~360 MPa).…”

Section: Rotating Bending Fatigue Testsmentioning

confidence: 59%

“…For instance, the angular particles lead to more material removal than rounded ones [4] and the incident angle influences noticeably the depth of the residual stress generated [5]. Therefore, the appropriated procedure should be employed accordingly with the specific application.…”

Section: Introductionmentioning

confidence: 99%

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Improvement of the blasting induced effects on medical 316 LVM stainless steel by short-term thermal treatments

Barriuso

Jaafar

Chao

et al. 2014

Surface and Coatings Technology

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“…Comparing the compressive strength values of the experimental samples with those of the 342 cortical bone, values of approximatively four times smaller than those of the cortical bone in the 343 longitudinal direction were noticed ( Table 2). The obtained results show lower values than those of 344 the consecrated metallic materials used in medicine [66][67][68] but higher than values than those of the 345 ceramic ones [19,69,70]. In contrast, for compressive loading on cortical bone, rapid hardening occurs after yielding, followed by softening.…”

mentioning

confidence: 69%

Novel Synthesis of Core-Shell Biomaterials from Polymeric Filaments with a Bioceramic Coating for Biomedical Applications

et al. 2020

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Bone tissue engineering is constantly in need of new material development with improved biocompatibility or mechanical features closer to those of natural bone. Other important factors are the sustainability, cost, and origin of the natural precursors involved in the technological process. This study focused on two widely used polymers in tissue engineering, namely polylactic acid (PLA) and thermoplastic polyurethane (TPU), as well as bovine-bone-derived hydroxyapatite (HA) for the manufacturing of core-shell structures. In order to embed the ceramic particles on the polymeric filaments surface, the materials were introduced in an electrical oven at various temperatures and exposure times and under various pressing forces. The obtained core-shell structures were characterized in terms of morphology and composition, and a pull-out test was used to demonstrate the particles adhesion on the polymeric filaments structure. Thermal properties (modulated temperature and exposure time) and the pressing force's influence upon HA particles' insertion degree were evaluated. More to the point, the form variation factor and the mass variation led to the optimal technological parameters for the synthesis of core-shell materials for prospect additive manufacturing and regenerative medicine applications.Coatings 2020, 10, 283 2 of 18 importance. Among these, PLA was widely used, mainly due to its biocompatibility with the human organism and the advantageous synthesis alternative from sustainable natural resources (e.g., beet or maize) [14]. Along with PLA, TPU was remarked in the additive manufacturing technology [15]. The TPU applications in the medical field spread from blood vessels, implants, and prosthetics, to scaffolding in tissue engineering, dialysis membranes, or breast implants [16].Furthermore, naturally derived hydroxyapatite (HA) is a bioactive ceramic, with similar chemical and structural properties to the mineral component of the natural bone tissue, and exceptional biocompatibility and osteoconductivity. HA can be synthesized from various renewable resources (e.g. fish, sheep, cattle or bovine bones [17,18] or marine shells [19,20]).Along with the development of new biomaterials, the cost-efficient and highly performant processing techniques for final products manufacturing are also in need of improvement. Additive manufacturing (AM) or 3D printing can be considered 21st century technology due to the possibility to attain patient-customized and adapted products [14]. However, the most widely and accessible used technique in orthopedics is fused deposition modeling (FDM) or fused filler fabrication (FFF) [8,14,21,22], which provide 3D scaffolds with a well-defined design by extruding a digital 3D model from thermoplastic polymeric materials heated to their melting point [22].This study aims to provide a new core-shell material that can be used in the FDM technique, targeted due to its rigorous control of parameters (temperature, bed temperature, feed rate, printing speed, etc.) [23][24][25][26][27].Therefore, thi...

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Fatigue behavior of Ti6Al4V and 316 LVM blasted with ceramic particles of interest for medical devices

Cited by 30 publications

References 30 publications

Computational prediction of the fatigue behavior of additively manufactured porous metallic biomaterials

Computational prediction of the fatigue behavior of additively manufactured porous metallic biomaterials

Improvement of the blasting induced effects on medical 316 LVM stainless steel by short-term thermal treatments

Novel Synthesis of Core-Shell Biomaterials from Polymeric Filaments with a Bioceramic Coating for Biomedical Applications

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