Additive Manufacturing of Smart Composite Structures Based on Flexinol Wires

3D printing of a composite structure with shape memory materials requires a special approach to the subject, at the stage of the design and printing process. This paper presents the design steps during the development of a 3D-printed composite structure with shape memory material. The connection points between the SMA fibers and the printer filament are developed in the MATLAB environment. Finite element method is used to simulate the shortening of the shape memory material under the influence of temperature and its effect on the printed polymer material is presented. In the MATLAB environment, evolutionary algorithms were used to determine the shape of the SMA fiber alignment. This work demonstrates the use of shape memory effect in 3D printed smart composite structures, where the component takes a predetermined shape. The structure obtained as a result of such printing changes with the heat generated by the current voltage, making it the desired fourth dimension.

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Epitaxial films of the magnetic shape memory material

Journal of Magnetism and Magnetic Materials ◽

10.1016/j.jmmm.2006.10.1046 ◽

2007 ◽

Vol 310 (2) ◽

pp. 2779-2781 ◽

Cited By ~ 35

Author(s):

G. Jakob ◽

H.J. Elmers

Keyword(s):

Shape Memory ◽

Epitaxial Films ◽

Shape Memory Material ◽

Magnetic Shape Memory ◽

Memory Material

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Finite Element Martensite Ratio Derivation on NiTi via Measurable Criteria of Strain Rate

Volume 1: Active Materials, Mechanics and Behavior; Modeling, Simulation and Control ◽

10.1115/smasis2009-1452 ◽

2009 ◽

Author(s):

Abbas Amini ◽

Hamid Mehdigholi ◽

Mohammad Elahinia

Keyword(s):

Mathematical Model ◽

Strain Rate ◽

Composite Structures ◽

High Sensitivity ◽

Smart Composite ◽

Rate Dependency ◽

Smart Composites ◽

Measurable Amount ◽

Macro Scale ◽

Smart Composite Structures

The shape memory alloys (SMAs) and smart composites have a large use in high and low level industry, while a lot of research is being done in this field. The existence of smart composite structures is because of the advance mechanical benefits of the above materials. This work refers to dynamic and quasi static nonlinear explanation of these materials. After mathematical model consideration on the rate of strain, a model which is about martensite ratio of NiTi has been presented. This work has been done because of the high sensitivity of these materials to strain rate and use of visual and measurable engineering criteria to access other variables. As the martensite ratio is not engineering measurable amount, it needs to have macro scale property to measure this important nano scale criteria. Relative experiments are done to show the rate dependency of NiTi.

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