Smart materials: Properties, design and mechatronic applications

Spaggiari, Andrea; Castagnetti, Davide; Golinelli, Nicola; Dragoni, Eugenio; Mammano, Giovanni Scirè

doi:10.1177/1464420716673671

Cited by 51 publications

(48 citation statements)

References 126 publications

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“…A review of smart materials such as piezoelectric devices and shape memory alloys and their uses in industry has also been conducted. 81 Therefore, the containing cluster is named smart products/parts/ materials. Figure 12 shows various characteristics and technologies that are a part of this smart products/ parts/materials' cluster.…”

Section: Technology Clustersmentioning

confidence: 99%

Smart manufacturing: Characteristics, technologies and enabling factors

Mittal

Khan

Romero

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part B:

387

261

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The purpose of this article is to collect and structure the various characteristics, technologies and enabling factors available in the current body of knowledge that are associated with smart manufacturing. Eventually, it is expected that this selection of characteristics, technologies and enabling factors will help compare and distinguish other initiatives such as Industry 4.0, cyber-physical production systems, smart factory, intelligent manufacturing and advanced manufacturing, which are frequently used synonymously with smart manufacturing. The result of this article is a comprehensive list of such characteristics, technologies and enabling factors that are regularly associated with smart manufacturing. This article also considers principles of ''semantic similarity'' to establish the basis for a future smart manufacturing ontology, since it was found that many of the listed items show varying overlaps; therefore, certain characteristics and technologies are merged and/or clustered. This results in a set of five defining characteristics, 11 technologies and three enabling factors that are considered relevant for the smart manufacturing scope. This article then evaluates the derived structure by matching the characteristics and technology clusters of smart manufacturing with the design principles of Industry 4.0 and cyber-physical systems. The authors aim to provide a solid basis to start a broad and interdisciplinary discussion within the research and industrial community about the defining characteristics, technologies and enabling factors of smart manufacturing.

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Section: Technology Clustersmentioning

confidence: 99%

Smart manufacturing: Characteristics, technologies and enabling factors

Mittal

Khan

Romero

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part B:

387

261

View full text Add to dashboard Cite

show abstract

“…The magnetic interactions between the particles in these composite materials depend on the magnetic orientation of each particle and their spatial relationship, which leads to an interesting number of magneto-mechanical phenomena (De Vicente et al, 2011;Ginder et al, 2000;Kallio, 2005). The aim is to expand the applicability of MREs towards the more widespread field of magnetorheological fluids (MRFs) which exploit the same principle using a fluid matrix and are already used in many industrial applications, especially for vibration damping and shock absorbers (Carlson and Jolly, 2000;Chen et al, 2007;Shen et al, 2004;Spaggiari et al, 2016;Yang et al, 2015). [AQ: 3] [AQ: 4] MREs include a large variety of composite materials, but their main components are always ferromagnetic particles immersed in a non-magnetic elastomeric matrix.…”

mentioning

confidence: 99%

Magneto-mechanical characterization of magnetorheological elastomers

Bellelli

Spaggiari

2019

Journal of Intelligent Material Systems and Structures

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This work analyses the properties and the magneto-mechanical characteristics of magnetorheological elastomers, a class of smart materials not yet broadly investigated. First, set of several samples of this material was manufactured, each one characterized by a different percentage of ferromagnetic material inside the viscoelastic matrix. The specimens were manufactured in order to create isotropic and anisotropic configurations, respectively, with randomly dispersed ferromagnetic particles or with an aligned distribution, obtained through and external magnetic field. Then, the mechanical behaviour of each sample was analysed by conducting a compression test, both with and without an external magnetic field. Moreover, a three-point bending test was also performed on the same specimens. Stiffness, deformation at maximum stress and specific energy dissipated were calculated based on the experimental data. The results were analysed considering the mechanical responses, and an analysis of variance was carried out in order to assess the statistical influence of each variable. The experimental results highlighted a strong correlation between the percentage of ferromagnetic material in each sample and its mechanical behaviour. The anisotropicity of the material, aligned in columnar structures, also affects the stiffness measured in the compression test, while the external magnetic field’s main contribution is to reduce the samples’ maximum deformation. Using analysis of variance results as guidelines, we built a simple phenomenological model which produces quite reliable predictions regarding the mechanical response of the magnetorheological elastomers under compressive stress.

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“…[1][2][3] A typical MRF is prepared by blending magnetic particles of size 3-10 mm in a carrier fluid such as mineral oil, synthetic oil, water and glycol. 4,5 Surfactants are usually added to avoid settling of MRF. 6 MRFs and MR grease (MRG) are two kinds of suspensions that are commonly used in brakes and clutches.…”

Section: Introductionmentioning

confidence: 99%

Design and development of a wedge shaped magnetorheological clutch

Singh

Thakur

Sarkar

2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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This paper presents a novel drum magnetorheological clutch design having a wedge shaped boundary. The converging film formed due to the direction of motion of the magnetorheological clutch and the inclination of the wedge planes helps to produce the pressure generating mechanism in the magnetorheological grease film. The resistance force developed due to this mechanism in the proposed case exceeds that of the conventional drum clutch. The proposed wedge shaped drum magnetorheological clutch consists of bimetallic discs made up of aluminium and mild steel. Mild steel disc has a certain number of inclined sliders shaped like a wedge at its boundary, which is immersed in the magnetorheological grease. The yield stress of the magnetorheological grease varies as a function of the magnetic field created by electric current passing through the electromagnet. Bingham model has been employed in the present study to analyse theoretically the torque generated by wedge-shaped drum magnetorheological clutch. The proposed magnetorheological drum clutch with wedge shaped boundary and conventional drum clutch have been designed and fabricated with similar material parameters and magnetic circuits. The experiment has been performed for the different current values (0 A, 0.25 A and 0.52 A). Torque results are plotted and compared for both cases. Experimental results suggest that the proposed wedge shaped drum magnetorheological clutch produces more torque than the conventional drum magnetorheological clutch, and thus it has better performance.

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Smart materials: Properties, design and mechatronic applications

Cited by 51 publications

References 126 publications

Smart manufacturing: Characteristics, technologies and enabling factors

Smart manufacturing: Characteristics, technologies and enabling factors

Magneto-mechanical characterization of magnetorheological elastomers

Design and development of a wedge shaped magnetorheological clutch

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