A new active composite

Drobez, Hervé; L’Hostis, Gildas; Gautier, Karine; Laurent, Fabrice; Durand, Bernard

doi:10.1088/0964-1726/18/2/025020

Cited by 13 publications

(13 citation statements)

References 10 publications

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“…An asymmetrical composite behaves as an active composite [19][20]. This active composite works on the principle of internal heating source i. e. the carbon yarns.…”

Section: Introductionmentioning

confidence: 99%

The recovery properties under load of a shape memory polymer composite material

Basit

L’Hostis

Durand

2019

Materialwissenschaft Werkst

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In many applications, shape memory alloys are being replaced by shape memory polymers as they have some better properties than shape memory alloys. Nevertheless, shape memory alloys can recover under load which shape memory polymers cannot. Shape memory polymers are not capable of giving full recovery even lifting a tiny load. The melting temperature or the glass transition temperature is the transition temperatures to which shape memory polymers are closely heated. Then a deforming force up to a certain position is applied to the heated shape memory polymers. After that shape memory polymer is permitted to cool while keeping it deformed. After the cooling, shape memory polymer obtains the temporary shape which can be recovered by reheating it at the similar transition temperature (glass transition or melting). Consequently, it recovers at its initial state. Shape memory polymer can achieve constrained recovery and unconstrained recovery, nonetheless; under stress, it is partly recovered. In current work, recovery under load has been investigated of an asymmetrical shape memory composite. It is established that it is capable to recover under various loads. Under various loads, it shows full recovery in reference to initial state. The ability to recover under load can be potentially used in diverse applications.

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“…An asymmetrical composite behaves as an active composite [19][20]. This active composite works on the principle of internal heating source i. e. the carbon yarns.…”

Section: Introductionmentioning

confidence: 99%

The recovery properties under load of a shape memory polymer composite material

Basit

L’Hostis

Durand

2019

Materialwissenschaft Werkst

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“…Some applications can be mentioned. In the thermally activated composite (smart material), the deformation of the structure can be controlled by acting on the internal heat source [1] . It requires to know the thermo-mechanical response of the structure for various localized thermal sollicitations.…”

Section: Introductionmentioning

confidence: 99%

Thermal and thermo-mechanical solution of laminated composite beam based on a variables separation for arbitrary volume heat source locations

Vidal

Gallimard

Ranc

et al. 2017

Applied Mathematical Modelling

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In this work, a method to compute explicit thermal solutions for laminated and sandwich beams with arbitrary heat source location is developed. The temperature is written as a sum of separated functions of the axial coordinate x , the transverse coordinate z and the volumetric heat source location x 0. The derived non-linear problem implies an iterative process in which three 1D problems are solved successively at each iteration. In the thickness direction, a fourth-order expansion in each layer is considered. For the axial description, classical Finite Element method is used. The presented approach is assessed on various laminated and sandwich beams and comparisons with reference solutions with a fixed heat source location are proposed. Based on the accurate results of the thermal analysis, thermo-mechanical response is also addressed using also a separated representation.

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“…The concept of a thermal activation based on a bimetallic effect, CBCM effect [7,8] has been studied for morphing structure, the objective of this work is to show the ability of this technology in the field of vibration control of composite structures. For the control of vibration the main actuator remains the piezoelectric, for example the Macro Fiber Composite [9,10]. However in the literature, some application using SMA actuators can be found.…”

Section: Introductionmentioning

confidence: 99%

Thermal Activation of Asymetrical Composites for Vibration Control

Imbert

L’Hostis

Rigel³

et al. 2013

MME

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The CBCM (Controlled Behaviour Composite Material) is a thermal active composite, which has been developed for morphing applications. The thermal activation is made by a source of heating generated within the composite structure. The coupling between the induced thermal field and the thermomechanical properties of the various components of the composite structure leads to the change of the structure shape. The heat source is generated by Joule effect, Carbon yarns inserted in the composite, are connected to a power supply. The application field of CBCM technology is the domain of shape modification and active assembly. The objective of this work is to illustrate the capabilities of CBCM in the domain of vibration control. We will study several reference plates with different constitution. The influences of these different constitutions, of the CBCM effect and the loss of stiffness for the matrix will be highlighted, for two boundary conditions, free/free and embedded/embedded.

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A new active composite

Cited by 13 publications

References 10 publications

The recovery properties under load of a shape memory polymer composite material

The recovery properties under load of a shape memory polymer composite material

Thermal and thermo-mechanical solution of laminated composite beam based on a variables separation for arbitrary volume heat source locations

Thermal Activation of Asymetrical Composites for Vibration Control

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