Thermo-mechanical properties of shape memory polymer nanocomposites reinforced by carbon nanotubes

Effects of nano-sized silica particles on the off-axis creep performance of unidirectional fiber-reinforced polymer hybrid composites

“…The SUC model is an analytical micromechanical method to predict the bulk properties of heterogeneous materials. [45][46][47] As mentioned in the previous section, the HPMC system can be viewed as a composite material in which the carbon fibers are embedded in the silica nanoparticle-polymer nanocomposite matrix. Figure 2 (a) illustrates a typical off-axis coupon of HPMC under consideration.…”

“…Also, the applied normal stress on the RVE does not lead to any shear stress inside the RVE sub-cells and vice versa. 35,36,[45][46][47][48] The stress components in the principal material coordinate are expressed from the applied stressŜ x by the transformation law as followŝ…”

“…Figure 2(d) displays a schematic diagram of the idealized cross-section of HPMC with square array packing of carbon fibers. In the unit cell-based models, 45–48 the representative volume element (RVE) of fibrous composite is usually represented by a rectangular cross-section fiber and matrix sub-cells. Considering this assumption, the RVE of the SUC model for simulating HPMCs is constructed, and shown in Figure 2(e).…”

Effects of critical interfacial shear strength between a polymer matrix and carbon nanotubes on the interphase strength and Pukanszky's “B” interphase parameter

“…11,12 Accordingly, polymer CNT nanocomposites are good candidates for many applications such as electronics, biosensors, actuators, aerospace structures and automotive components. [13][14][15][16][17][18][19][20][21] The main difficulties for the production of polymer CNT nanocomposites include the deprived spreading of CNTs and the poor interfacial attachment between polymer media and CNTs. 22,23 As a result, improving the processing terms and using the modied/functionalized nanoparticles are recommended to solve these problems and promote the nanocomposite performance.…”

Thermo-electro–elastic behavior of a carbon nanotubes bundles–reinforced electro-active polymer hollow cylinder considering hierarchical structure of the bundles

“…Considering interfacial thermal resistance between the CNT and shape memory polymer agglomerated state of CNTs into the shape memory polymer matrix and non-straight shape of the CNT, Hassanzadeh-Aghdam and Ansari 37 and Hassanzadeh-Aghdam et al. 38 reported a new micromechanical formulation based on a unit cell model to predict the effective thermal conductivities of CNT–shape memory polymer nanocomposites, and investigated the comprehensive characterization of thermoelastic properties of shape memory polymer nanocomposites containing CNTs. With the effective medium micromechanics-based method, Hassanzadeh-Aghdam et al.…”