東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Rate and Microstructure Effects on t...

Thevamaran, Ramathasan.

FindBook

Google Book

Amazon

博客來

Rate and Microstructure Effects on the Dynamics of Carbon Nanotube Foams.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Rate and Microstructure Effects on the Dynamics of Carbon Nanotube Foams./
作者:	Thevamaran, Ramathasan.
面頁冊數:	189 p.
附註:	Source: Dissertation Abstracts International, Volume: 77-07(E), Section: B.
Contained By:	Dissertation Abstracts International77-07B(E).
標題:	Mechanical engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10019648
ISBN:	9781339511313

Rate and Microstructure Effects on the Dynamics of Carbon Nanotube Foams.
Thevamaran, Ramathasan.

Rate and Microstructure Effects on the Dynamics of Carbon Nanotube Foams. - 189 p.

Source: Dissertation Abstracts International, Volume: 77-07(E), Section: B.

Thesis (Ph.D.)--California Institute of Technology, 2015.

Soft hierarchical materials often present unique functional properties that are sensitive to the geometry and organization of their micro- and nano-structural features across different lengthscales. Carbon Nanotube (CNT) foams are hierarchical materials with fibrous morphology that are known for their remarkable physical, chemical and electrical properties. Their complex microstructure has led them to exhibit intriguing mechanical responses at different lengthscales and in different loading regimes. Even though these materials have been studied for mechanical behavior over the past few years, their response at high-rate finite deformations and the influence of their microstructure on bulk mechanical behavior and energy dissipative characteristics remain elusive.

ISBN: 9781339511313Subjects--Topical Terms:

649730
Mechanical engineering.

Rate and Microstructure Effects on the Dynamics of Carbon Nanotube Foams.
LDR:03512nmm a2200325 4500 001 2077126
005 20161114130227.5
008 170521s2015 ||||||||||||||||| ||eng d
020 $a 9781339511313
035 $a (MiAaPQ)AAI10019648
035 $a AAI10019648
040 $a MiAaPQ $c MiAaPQ
100 1 $a Thevamaran, Ramathasan. $3 3192620
245 1 0 $a Rate and Microstructure Effects on the Dynamics of Carbon Nanotube Foams.
300 $a 189 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-07(E), Section: B.
500 $a Includes supplementary digital materials.
500 $a Adviser: Chiara Daraio.
502 $a Thesis (Ph.D.)--California Institute of Technology, 2015.
520 $a Soft hierarchical materials often present unique functional properties that are sensitive to the geometry and organization of their micro- and nano-structural features across different lengthscales. Carbon Nanotube (CNT) foams are hierarchical materials with fibrous morphology that are known for their remarkable physical, chemical and electrical properties. Their complex microstructure has led them to exhibit intriguing mechanical responses at different lengthscales and in different loading regimes. Even though these materials have been studied for mechanical behavior over the past few years, their response at high-rate finite deformations and the influence of their microstructure on bulk mechanical behavior and energy dissipative characteristics remain elusive.
520 $a In this dissertation, we study the response of aligned CNT foams at the high strain-rate regime of 102 - 104 s -1. We investigate their bulk dynamic response and the fundamental deformation mechanisms at different lengthscales, and correlate them to the microstructural characteristics of the foams. We develop an experimental platform, with which to study the mechanics of CNT foams in high-rate deformations, that includes direct measurements of the strain and transmitted forces, and allows for a full field visualization of the sample's deformation through high-speed microscopy. We synthesize various CNT foams (e.g., vertically aligned CNT (VACNT) foams, helical CNT foams, micro-architectured VACNT foams and VACNT foams with microscale heterogeneities) and show that the bulk functional properties of these materials are highly tunable either by tailoring their microstructure during synthesis or by designing micro-architectures that exploit the principles of structural mechanics. We also develop numerical models to describe the bulk dynamic response using multiscale mass-spring models and identify the mechanical properties at length scales that are smaller than the sample height.
520 $a The ability to control the geometry of microstructural features, and their local interactions, allows the creation of novel hierarchical materials with desired functional properties. The fundamental understanding provided by this work on the key structure-function relations that govern the bulk response of CNT foams can be extended to other fibrous, soft and hierarchical materials. The findings can be used to design materials with tailored properties for different engineering applications, like vibration damping, impact mitigation and packaging.
590 $a School code: 0037.
650 4 $a Mechanical engineering. $3 649730
650 4 $a Mechanics. $3 525881
650 4 $a Nanotechnology. $3 526235
690 $a 0548
690 $a 0346
690 $a 0652
710 2 $a California Institute of Technology. $b Mechanical Engineering. $3 2093076
773 0 $t Dissertation Abstracts International $g 77-07B(E).
790 $a 0037
791 $a Ph.D.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10019648