Fatigue behavior of porous biomaterials manufactured using selective laser melting

Yavari, Saber Amin; Wauthlé, Ruben; Stok, Johan van der; Riemslag, A.C.; Janssen, M.; Mulier, Michiel; Kruth, Jean‐Pierre; Schrooten, Jan; Weinans, Harrie; Zadpoor, Amir A.

doi:10.1016/j.msec.2013.08.006

Cited by 301 publications

(213 citation statements)

References 41 publications

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“…Figure 2 shows a schematic graph to present the working principle of the SLM [46]. Table 3 provides a summary about the key machine parameters and working conditions via a typical SLM machine, SLM 280 HL [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46]. …”

Section: Selective Laser Melting (Slm)mentioning

confidence: 99%

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

Yan¹,

Yu²

2015

Sintering Techniques of Materials

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Section: Selective Laser Melting (Slm)mentioning

confidence: 99%

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

Yan¹,

Yu²

2015

Sintering Techniques of Materials

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“…Mechanical fatigue behavior of polymer scaffolds have been barely assessed in the literature 3,4 , despite their large importance in actual applications. The mechanical properties of dry scaffold are not representative of the behavior of the material when immersed in cell culture media or during in vivo experiments, as the porous will be filled with aqueous media and/or growing tissue that will strongly contribute to the scaffold mechanical response.…”

Section: Introductionmentioning

confidence: 99%

In vitromechanical fatigue behavior of poly‐ɛ‐caprolactone macroporous scaffolds for cartilage tissue engineering: Influence of pore filling by a poly(vinyl alcohol) gel

et al. 2014

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In vitro mechanical fatigue behavior of poly-ɛ-caprolactone macroporous scaffolds for cartilage tissue engineering: Influence of pore filling by a poly(vinyl alcohol) gel AbstractPolymeric scaffolds used in regenerative therapies are implanted in the damaged tissue and submitted to repeated loading cycles. In the case of articular cartilage engineering, an implanted scaffold is typically subjected to long-term dynamic compression. The evolution of the mechanical properties of the scaffold during bioresorption has been deeply studied in the past, but the possibility of failure due to mechanical fatigue has not been properly addressed. Nevertheless, the macroporous scaffold is susceptible to failure after repeated loading-unloading cycles. In this work fatigue studies of polycaprolactone scaffolds were carried by subjecting the scaffold to repeated compression cycles in conditions simulating the scaffold implanted in the articular cartilage. The behavior of the polycaprolactone sponge with the pores filled with a poly(vinyl alcohol) gel simulating the new formed tissue within the pores was compared with that of the material immersed in water. Results were analyzed with Morrow's criteria for failure and accurate fittings are obtained just up to 200 loading cycles. It is also shown that the presence of poly(vinyl alcohol) increases the elastic modulus of the scaffolds, the effect being more pronounced with increasing the number of freeze/thawing cycles. AbstractPolymeric scaffolds used in regenerative therapies are implanted in the damaged tissue and submitted to repeated loading cycles. In the case of articular cartilage engineering, an implanted scaffold is typically subjected to long term dynamic compression. The evolution of the mechanical properties of the scaffold during bioresorption has been deeply studied in the past, but the possibility of failure due to mechanical fatigue has not been properly addressed.Nevertheless, the macroporous scaffold is susceptible to failure after repeated loading-unloading cycles. In this work fatigue studies of polycaprolactone scaffolds were carried by subjecting the scaffold to repeated compression cycles in conditions simulating the scaffold implanted in the articular cartilage. The behaviour of the polycaprolactone sponge with the pores filled with a poly(vinyl alcohol) gel simulating the new formed tissue within the pores was compared with that of the material immersed in water. Results were analyzed with Morrow's criteria for failure 2 and accurate fittings are obtained just up to 200 loading cycles. It is also shown that the presence of poly(vinyl alcohol) increases the elastic modulus of the scaffolds, the effect being more pronounced with increasing the number of freeze/thawing cycles.

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“…Although increasing the controlled porosity reduces the stiffness and provides space for bone ingrowth, fatigue properties may suffer [61]. Therefore, relying on static mechanical tests alone is not sufficient.…”

Section: Characterizationmentioning

confidence: 99%

“…The material properties of struts are needed to be known for characterization, since this information will affect the predicted results. Yavari et al [61] predicted that using the same energy density in all lattice structures would result in the same material properties and that there would be no significant differences between the bulk and strut material properties. Experiments performed by Tsopanos et al [69] indicated a reduction of 74% in the stiffness of struts as compared to bulk.…”

Section: Modelling and Validationmentioning

confidence: 99%

Lattice Structures and Functionally Graded Materials Applications in Additive Manufacturing of Orthopedic Implants: A Review

Mahmoud

Elbestawi

2017

JMMP

201

117

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A major advantage of additive manufacturing (AM) technologies is the ability to print customized products, which makes these technologies well suited for the orthopedic implants industry. Another advantage is the design freedom provided by AM technologies to enhance the performance of orthopedic implants. This paper presents a state-of-the-art overview of the use of AM technologies to produce orthopedic implants from lattice structures and functionally graded materials. It discusses how both techniques can improve the implants' performance significantly, from a mechanical and biological point of view. The characterization of lattice structures and the most recent finite element analysis models are explored. Additionally, recent case studies that use functionally graded materials in biomedical implants are surveyed. Finally, this paper reviews the challenges faced by these two applications and suggests future research directions required to improve their use in orthopedic implants.

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Fatigue behavior of porous biomaterials manufactured using selective laser melting

Cited by 301 publications

References 41 publications

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

In vitromechanical fatigue behavior of poly‐ɛ‐caprolactone macroporous scaffolds for cartilage tissue engineering: Influence of pore filling by a poly(vinyl alcohol) gel

Lattice Structures and Functionally Graded Materials Applications in Additive Manufacturing of Orthopedic Implants: A Review

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