Energy Dissipation and the High‐Strain Rate Dynamic Response of Vertically Aligned Carbon Nanotube Ensembles Grown on Silicon Wafer Substrate

Mantena, P. Raju; Tadepalli, T.; Pramanik, Brahmananda; Boddu, Veera M.; Brenner, Matthew; Stephenson, L. D.; Kumar, Ashok

doi:10.1155/2013/259458

Cited by 5 publications

(8 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The individual CNT forests were fabricated using the wellestablished method of floating catalyst chemical vapor deposition (FC-CVD) [24][25][26][27][28] on silicon wafers [Wafer World, Inc., 100 mm diameter, Type P Boron doped (100) orientation, Palm Beach County, FL, USA] cut to a size of about 6 mm by 60 mm in a quartz reactor (2 in. diameter and 38 in.…”

Section: Experimental Methods and Proceduresmentioning

confidence: 99%

“…The CNT growth process was continued for 30 min. The process time of 30 min was selected based on previous CNT growth studies [26][27][28]. After the 30-min process time, the precursor solution and H 2 flow were turned off while the N 2 flow rate was set to 1000 mL/min to flush the residual chemical species from the reactor.…”

Section: Experimental Methods and Proceduresmentioning

confidence: 99%

See 1 more Smart Citation

Energy dissipation in intercalated carbon nanotube forests with metal layers

Boddu

Brenner

2016

Appl. Phys. A

Self Cite

View full text Add to dashboard Cite

Vertically aligned carbon nanotube (CNT) forests were synthesized to study their quasi-static mechanical properties in a layered configuration with metallization. The top and bottom surfaces of CNT forests were metalized with Ag, Fe, and In using paste, sputtering, and thermal evaporation, respectively. Stacks of one, two, and three layers of these forests were assembled and compressed to measure their mechanical properties. The samples were strain limited to 0.7, and the results indicate that energy dissipation is approximately linear with respect to the number of layers and relatively independent of metal type. The energy per unit volume was approximately the same for all samples. Successive stacking of CNT forests reduces local buckling events, which is enhanced with a thick Ag deposition on the CNT forest surface. Young's modulus was also observed to increase as the number of layers was increased. These results are useful in the design of composite materials for high energy absorption and high stiffness applications.

show abstract

Section: Experimental Methods and Proceduresmentioning

confidence: 99%

Section: Experimental Methods and Proceduresmentioning

confidence: 99%

Energy dissipation in intercalated carbon nanotube forests with metal layers

Boddu

Brenner

2016

Appl. Phys. A

Self Cite

View full text Add to dashboard Cite

show abstract

“…In a following study where the silicon wafer covered with a CNT forest was tested, the mechanism for the enhanced damping was discussed. The primary energy dissipation is also believed to be a general result of the interfacial friction between individual CNTs, caused by their entanglements under cyclic deformation …”

Section: Vibration Damping In Carbon Nanotube Assembliesmentioning

confidence: 99%

“…Besides such effect of intertube friction, the CNT entanglement plays more important roles in determining the viscoelasticity. (Even in CNT forests, the effect of entanglement is still non‐negligible …”

Section: Vibration Damping In Carbon Nanotube Assembliesmentioning

confidence: 99%

Vibration Damping of Carbon Nanotube Assembly Materials

et al. 2017

View full text Add to dashboard Cite

Vibration reduction is of great importance in various engineering applications, and a material that exhibits good vibration damping along with high strength and modulus has become more and more vital. Owing to the superior mechanical property of carbon nanotube (CNT), new types of vibration damping material can be developed. This paper presents recent advancements, including our progresses, in the development of highdamping macroscopic CNT assembly materials, such as forests, gels, films, and fibers. In these assemblies, structural deformation of CNTs, zipping and unzipping at CNT connection nodes, strengthening and welding of the nodes, and sliding between CNTs or CNT bundles are playing important roles in determining the viscoelasticity, and elasticity as well. Towards the damping enhancement, strategies for micro-structure and interface design are also discussed.

show abstract

“…It was observed that VACNT based sandwich composites showed higher flexural rigidity and damping compared to samples consisting of carbon fiber fabric stacks without VACNT. In previous research [8] conducted at the Blast and Impact Dynamics laboratory, University of Mississippi, the dynamic mechanical behavior and high strain-rate response of a FGM system consisting of VACNT grown on a silicon (Si) wafer substrate have been investigated. It was found that VACNT forests grown on Si wafer substrate exhibited significantly higher flexural stiffness, damping, and specific energy absorption.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Mechanical Analysis and High Strain‐Rate Energy Absorption Characteristics of Vertically Aligned Carbon Nanotube Reinforced Woven Fiber‐Glass Composites

Kim

Mantena

Daryadel

et al. 2015

Journal of Nanomaterials

Self Cite

View full text Add to dashboard Cite

The dynamic mechanical behavior and energy absorption characteristics of nano-enhanced functionally graded composites, consisting of 3 layers of vertically aligned carbon nanotube (VACNT) forests grown on woven fiber-glass (FG) layer and embedded within 10 layers of woven FG, with polyester (PE) and polyurethane (PU) resin systems (FG/PE/VACNT and FG/PU/VACNT) are investigated and compared with the baseline materials, FG/PE and FG/PU (i.e., without VACNT). A Dynamic Mechanical Analyzer (DMA) was used for obtaining the mechanical properties. It was found that FG/PE/VACNT exhibited a significantly lower flexural stiffness at ambient temperature along with higher damping loss factor over the investigated temperature range compared to the baseline material FG/PE. For FG/PU/VACNT, a significant increase in flexural stiffness at ambient temperature along with a lower damping loss factor was observed with respect to the baseline material FG/PU. A Split Hopkinson Pressure Bar (SHPB) was used to evaluate the energy absorption and strength of specimens under high strain-rate compression loading. It was found that the specific energy absorption increased with VACNT layers embedded in both FG/PE and FG/PU. The compressive strength also increased with the addition of VACNT forest layers in FG/PU; however, it did not show an improvement for FG/PE.

show abstract

Energy Dissipation and the High‐Strain Rate Dynamic Response of Vertically Aligned Carbon Nanotube Ensembles Grown on Silicon Wafer Substrate

Cited by 5 publications

References 12 publications

Energy dissipation in intercalated carbon nanotube forests with metal layers

Energy dissipation in intercalated carbon nanotube forests with metal layers

Vibration Damping of Carbon Nanotube Assembly Materials

Dynamic Mechanical Analysis and High Strain‐Rate Energy Absorption Characteristics of Vertically Aligned Carbon Nanotube Reinforced Woven Fiber‐Glass Composites

Contact Info

Product

Resources

About