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Showing 1 to 20 of 30 for “"Damage Sensing"”.
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Multifunctional composite structures with damage sensing capabilities
… multifunctional composite structures with damage sensing capabilities towards the development of integrated non-destructive inspection (NDI) and structural health monitoring (SHM) capabilities. Two routes were identified and selected for further investigation; the enhancement of …
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Piezoresistive Hybrid Nanocomposites for Strain and Damage Sensing: Experimental and Numerical Analysis
… of these nanocomposites makes them ideal for sensing applications. Besides, hybrid nanocomposites with multiple fillers like carbon nanotubes (CNTs) and graphite nanoplatelets (GNPs) are known to exhibit improved electrical and mechanical performance when compared to mono-filler …
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Multifunctional Nanocomposites and Particulate Composites with Nanocomposite Binders for Deformation and Damage Sensing
… efforts focus primarily on the sensors and sensing systems for detecting instances and locations of damage through techniques such as X-ray, micro CT, acoustic emission, infrared thermography, lamb wave etc., which only detect cracks at relatively large length scales and rely heavily on …
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Computational Micromechanics Analysis of Deformation and Damage Sensing in Carbon Nanotube Based Nanocomposites
… health monitoring is primarily reliant on sensing deformation of structures at discrete locations using sensors and detecting damage using techniques such as X-ray, microCT, acoustic emission, impedance methods etc., primarily employed at specified intervals of service life. There is a need …
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Deformability and Dynamics in Linear and Looped/Supercoiled DNA with Implications for Damage Sensing
Damage-sensing proteins must scan billions of base pairs (bp) of genomic DNA to identify damaged sites and initiate repair. These proteins diffuse rapidly along DNA, with <500 µs “dwell” time per site, while damage recognition—often involving DNA bending or unwinding—occurs over much slower …
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Coupled Electromechanical Peridynamics Modeling of Strain and Damage Sensing in Carbon Nanotube Reinforced Polymer Nanocomposites
… reinforced nanocomposites for the purpose of sensing deformation and damage in materials. Peridynamics, a non-local continuum theory which was originally formulated for modeling problems in solid mechanics, has been extended in this research to electromechanical fields and applied to study the …
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Computational Investigation of Strain and Damage Sensing in Carbon Nanotube Reinforced Nanocomposites with Descriptive Statistical Analysis
… Monitoring of the formation and growth of damage at the mesoscale is considered through the inclusion of a piezoresistive carbon nanotube network within the energetic binder providing embedded strain and damage sensing. A coupled multiphysics thermo-electro-mechanical peridynamics framework …
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Multiscale Modeling of CNT-Polymer Nanocomposites and Fuzzy Fiber Reinforced Polymer Composites for Strain and Damage Sensing
… on modeling the coupled effect between continuum damage and piezoresistivity in the CNT-polymer nanocomposites by using computational micromechanics techniques based on a concurrent multiscale finite element analysis. The results show that there is a good correlation between continuum damage and …
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Expeditious detection of DNA damage: Probing the sequence-sensing and damage-sensing mechanism(s) of the XPD helicase
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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Development and Characterization of Piezoresistive Nanocomposites for Sensing Applications
… properties with many potentials in strain and damage sensing applications. In this work, we fabricate hybrid nanocomposites with carbon nanotube (CNT) sheet and graphene nanoplatelets (GNP) as fillers with epoxy matrix. An improvement in both electrical conductivity and piezoresistivity is …
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Piezoresistivity Characterization of Polymer Bonded Energetic Nanocomposites under Cyclic Load Cases for Structural Health Monitoring Applications
The strain and damage sensing abilities of randomly oriented multi-walled carbon nanotubes (MWCNTs) dispersed in the polymer binder of energetic composites were experimentally investigated. Ammonium perchlorate (AP) crystals served as the inert energetic and atomized aluminum as the metallic fuel, …
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Method Development for Transmission Electron Microscopy of Carbon Nanotubes and for Distributed Sensing With Triboluminescent Materials in the Premise of Sustainable Infrastructure
… and cementitious matricesand for distributed sensing employing fracto-luminescent materials. The developed techniques will likely allow for improvement in durability and health monitoring of cementitious composites and thus will likely contribute toward a sustainable use of cementitious …
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Investigating mechanisms of ovotoxicity of Perfluorooctanoic acid and Zearalenone exposure and the influence of altered metabolic status on ovarian function
… no impacts of obesity on several markers of DNA damage were noted, LC-MS/MS analysis provided mechanistic insight into the impact of obesity in a rat model on ovarian endpoints related to genotoxicant response. Per- and polyfluoroalkylated substances (PFAS) including PFOA are characterized by …
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Mechanical and Electrical Characterization of Hybrid Carbon Nanotube Sheet-Graphene Nanocomposites for Sensing Applications
… deformation is applied facilitates their use in sensing applications.</p> <p>In this work, carbon nanotube sheet- epoxy nanocomposites with the matrix modified with various contents of coarse and fine graphene nanoplatelets are fabricated. The addition of a secondary filler results in …
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Synthesis and Development of Novel Cyclobutane Mechanophores
Mechanical damage of polymers is often a destructive and irreversible process. However, desirable effects may be achieved by controlling the location of chain cleavage events through careful design and incorporation of mechanically active chemical moieties known as mechanophores. These …
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The interaction of CtIP with DNA damage response proteins
… in vivo with, and directly binds to, the DNA damage mediator proteins containing BRCT domains: 53BP1, MDC1, TopBP1 and NBS1. The binding sites on all of these proteins have been mapped establishing which regions of CtlP interact directly with 53BP1, MDC1, TopBP1 and NBS1 and vice versa. This …
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Experimental Nanoengineering of Multifunctionality into an Advanced Composite Laminate
… notched tensile strength with equivalent damage progression as revealed through in situ testing using synchrotron radiation computed tomography (SRCT). The IMCs demonstrated here, with electrically and thermally conductive interlaminar regions and surfaces, support future demonstrations of …
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The Role of Galectin-3 in Pathogen Sensing and Cell Autonomous Defense
… which are used as a danger signal to possible damage induced by a pathogen. These damage patterns are present in the lifestyle of the pathogens, making it nearly impossible for them to avoid completely. Bacterial secretion systems cause vacuolar instability, and when a phagosome or pathogen …
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Design and Performance of Intrinsic Self-sensing Cementitious Composites for Smart Structural Health Monitoring of Civil Infrastructure
Intrinsic self-sensing cementitious composites which simultaneously own the load bearing capacity and self-sensing capacity, have attracted increasing research interests in recent years to fulfil the multifunctional requirements for the next generation of biomimetic, intelligent and resilient …
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Graphite-enabled Cementitious Composites: A Smart and Resilient Solution for Future Infrastructure
… conductive fillers to develop an intrinsic self-sensing concrete to monitor structures without the need for embedded, attached, or remote sensors while maintaining or improving its mechanical properties and durability. Graphite is a particularly attractive filler to use in practical engineering …
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