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Mostrando ítems 1-10 de 12
Artículo
Design of lead-free PVDF/CNT/BaTiO3 piezocomposites for sensing and energy harvesting: The role of polycrystallinity, nanoadditives, and anisotropy
(IOP Publishing Ltd, 2020-01)
Lead-free piezoelectric composites with polymeric matrices offer a scalable and eco-friendly solution to sensing and energy harvesting applications. Piezoelectric polymers such as PVDF are particularly interesting because ...
Ponencia
An xfem-based numerical scheme to compute crack-induced electrical resistivity changes in cracked cnt-reinforced composites using ansys
(American Institute of Physics Inc., 2020-11-30)
This paper presents an eXtended Finite Element Method (XFEM)-based numerical scheme to compute electrical resistivity changes caused by the presence of cracks. Using the commercial finite element package ANSYS, the virtual ...
Artículo
Lead-free piezocomposites with CNT-modified matrices: Accounting for agglomerations and molecular defects
(Elsevier, 2019-09)
Piezoelectric matrix-inclusion composites based on lead-free ceramics have attracted attention due to the possibility of manufacturing environmentally friendly devices using scalable emerging technologies such as 3D printing. ...
Artículo
Analytical expressions to estimate the effective piezoelectric tensor of a textured polycrystal for any crystal symmetry
(Elsevier, 2020-12)
This work introduces a set of analytical expressions that simplify the procedure for obtaining closed-form formulas to estimate the effective piezoelectric properties of polycrystalline aggregates formed by crystals of all ...
Artículo
Bending and free vibration analysis of functionally graded graphene vs. carbon nanotube reinforced composite plates
(Elsevier, 2018-02)
Carbon-based nanomaterials have drawn the attention of a large section of the scientific community in recent years. Most research has focused on carbon nanotubes after some experimental studies reported outstanding ...
Artículo
Crack-induced electrical resistivity changes in cracked CNT-reinforced composites
(Elsevier, 2020-04)
Carbon nanotube (CNT)-reinforced composites exhibit a piezoresistive behavior that permits their use as sensors in novel structural health monitoring (SHM) applications, by measuring the electrical resistivity change of ...
Artículo
MWCNT/epoxy strip-like sensors for buckling detection in beam-like structures
(Elsevier, 2018-12)
Buckling of slender structures constitutes a hazardous failure mechanism that can yield partial or total collapses. Nonetheless, given that buckling failure is characterized by a highly non-linear and sudden loss of ...
Artículo
Crack-face frictional contact modelling in cracked piezoelectric materials
(Springer, 2019-06)
Actuators, sensors, micro- and nano-electromechanical systems and other piezoelectirc components are generally constructed in block form or as a thin laminated composites. The study of the integrity of such materials in ...
Artículo
Crack detection and localization in RC beams through smart MWCNT/epoxy strip-like strain sensors
(IOP Publishing, 2018-10)
In recent years, self-sensing structural materials have drawn enormous attention of scientific community due to their potential to enable continuous monitoring of the integrity of structures. The new paradigm of smart ...
Artículo
XFEM crack growth virtual monitoring in self-sensing CNT reinforced polymer nanocomposite plates using ANSYS
(Elsevier, 2022-03)
This paper presents an eXtended Finite Element Method (XFEM)-based numerical scheme to compute electrical resistivity changes caused by the presence of cracks and the crack growth. Using the commercial finite element package ...