SMA biomedical applications

Auricchio, Ferdinando; Boatti, Elisa; Conti, Michele; Marconi, Stefania

doi:10.1016/b978-0-12-819264-1.00019-4

Cited by 15 publications

(6 citation statements)

References 66 publications

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“…On the other hand, some SMAs demonstrate potential toxicity [168], limited ductility, brittleness [136], and slow responses [179]. Due to the strong capabilities of SMA materials, they are suitable for use in aerospace [177], neurosurgical [180], and biomedical [181] applications.…”

Section: Four-dimensional Printing Materialsmentioning

confidence: 99%

A Comprehensive Review of 4D Printing: State of the Arts, Opportunities, and Challenges

Aldawood

2023

Actuators

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Over the past decade, 3D printing technology has been leading the manufacturing revolution. A recent development in the field of 3D printing has added time as a fourth dimension to obtain 4D printing parts. A fabricated design created by 3D printing is static, whereas a design created by 4D printing is capable of altering its shape in response to environmental factors. The phrase “4D printing” was introduced by Tibbits in 2013, and 4D printing has since grown in popularity. Different smart materials, stimulus, and manufacturing methods have been published in the literature to promote this new technology. This review paper provides a description of 4D printing technology along with its features, benefits, limitations, and drawbacks. This paper also reviews a variety of 4D printing applications in fields such as electronics, renewable energy, aerospace, food, healthcare, and fashion wear. The review discusses gaps in the research, the current challenges in 4D printing, and the future of 4D printing.

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Section: Four-dimensional Printing Materialsmentioning

confidence: 99%

A Comprehensive Review of 4D Printing: State of the Arts, Opportunities, and Challenges

Aldawood

2023

Actuators

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“…Ejemplos de este tipo de aleaciones incluyen aleaciones como FeMnSi, CuZnAl, CuAlNi, pero sobre todo, NiTi, más popularmente conocido como nitinol. Las aleaciones de nitinol son biocompatibles gracias a la capa protectora de óxido de titanio que se forma en su superficie [24], y puede encontrase en varios dispositivos, sobre todo en aplicaciones cardiovasculares, pero también en ortopedia y ortodoncia [25].…”

Section: Impresión 4d De Aleaciones Con Memoria De Forma: Materiales ...unclassified

Impresión 4D empleando polímeros y aleaciones con memoria de forma para una nueva generación de dispositivos médicos inteligentes

2022

Congreso Iberoamericano De Ingeniería Mecánica-Cibim 2022

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ResumenLas tecnologías de fabricación aditiva, comúnmente denominadas de "impresión 3D", están revolucionando la práctica médica promoviendo la obtención de dispositivos médicos con diseños personalizados y que presentan características biomiméticas para una mejor interacción con el organismo humano. Sin embargo, muchas de estas propuestas de aplicación de las tecnologías aditivas o de impresión 3D a la salud, especialmente en el caso del desarrollo de implantes, son estáticas y no permiten una interacción dinámica con los tejidos de los pacientes, que posibilite cirugías mínimamente invasivas o permitan una adaptación geométrica conforme a sus procesos de curación o crecimiento. El emergente ámbito de la "impresión 4D", que aplica tecnologías aditivas a la obtención de dispositivos capaces de modificar su geometría de forma controlada, presenta un gran potencial para el desarrollo de dispositivos médicos "inteligentes", que interactúen de forma dinámica con el organismo. Este estudio presenta diferentes estrategias para progresar hacia los citados biodispositivos inteligentes y que se basan en la fabricación aditiva de dos de las familias mas notables de materiales multifuncionales: los polímeros con memoria de forma y las aleaciones con memoria de forma. Se analizan los principios básicos de diseño para impresión 4D, se explican diferentes opciones para potenciar los cambios de forma, se detalla la impresión 4D de polímeros y aleaciones con memoria de forma y se revisan los principales ámbitos de aplicación médica, así como las principales tendencias de investigación.Palabras clave: impresión 3D y 4D; polímeros y aleaciones con memoria de forma; materiales inteligentes; dispositivos médicos.

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“…Shape memory alloys (SMAs) are intelligent materials that find widespread application in the fields of aerospace [1], biomedical [2], and civil engineering [3], owing to their unique shape memory effect (SME) and superelasticity (SE). In the field of actuator design, the main principle utilized is SME, which refers to the ability of certain materials to recover a predetermined shape when heated.…”

Section: Introductionmentioning

confidence: 99%

Experiment and simulation study on the functional fatigue of shape memory alloy beam actuators

Wang,

Leng,

Rao

et al. 2024

Smart Mater. Struct.

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The functional fatigue behavior of shape memory alloy (SMA) beam actuators is gaining importance as their utilization in engineering applications becomes more widespread. However, research on the functional fatigue behavior of SMA beam actuators under bending conditions is not as extensive as that on SMA wires. In this paper, an experimental study and theoretical analysis of the functional fatigue behavior of SMA beam actuators were conducted. A measuring method for bending deflection and an automatic thermal cyclic test bench was designed. A series of functional fatigue tests were conducted on SMA beam actuators under different bias load conditions and the functional fatigue patterns were obtained. The material damage factor is defined and calculated through specimen tests. By incorporating the damage factor to modify the existing constitutive model, a model considering functional fatigue and tension-compression asymmetry is obtained. Finite Element Analysis (FEA) is performed based on this modified model to simulate the actuating performance of SMA beam actuators and to compute the deflection at different numbers of cycles. Additionally, a small parameter study on the actuator shape is conducted using FEA. By comparing the FEA results with functional fatigue experimental data, the effectiveness of the modified model is validated, demonstrating its capability to describe functional fatigue and predict actuator lifespan.

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SMA biomedical applications

Cited by 15 publications

References 66 publications

A Comprehensive Review of 4D Printing: State of the Arts, Opportunities, and Challenges

A Comprehensive Review of 4D Printing: State of the Arts, Opportunities, and Challenges

Impresión 4D empleando polímeros y aleaciones con memoria de forma para una nueva generación de dispositivos médicos inteligentes

Experiment and simulation study on the functional fatigue of shape memory alloy beam actuators

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