東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back to Search results for [ null ]

Switch To: Labeled | MARC Mode | ISBD

The development of advanced material...

Wang, Yun-Che.

Linked to FindBook

Google Book

Amazon

博客來

The development of advanced materials: Negative Poisson's ratio materials, high damping and high stiffness materials, and composites with negative stiffness inclusions and their stability.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The development of advanced materials: Negative Poisson's ratio materials, high damping and high stiffness materials, and composites with negative stiffness inclusions and their stability./
Author:	Wang, Yun-Che.
Description:	208 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 1945.
Contained By:	Dissertation Abstracts International65-04B.
Subject:	Applied Mechanics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3128061
ISBN:	049675324X

The development of advanced materials: Negative Poisson's ratio materials, high damping and high stiffness materials, and composites with negative stiffness inclusions and their stability.
Wang, Yun-Che.

The development of advanced materials: Negative Poisson's ratio materials, high damping and high stiffness materials, and composites with negative stiffness inclusions and their stability. - 208 p.

Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 1945.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2004.

The manufacture of negative Poisson's ratio polymeric foams was based on a thermal transformation technique to convert the convex cell shape of conventional foams to a concave or re-entrant shape through triaxial compression and heating. Poisson's ratio measurements were performed with a laser-based setup for non-transparent materials with high accuracy. Contrary to the predictions of the theory of elasticity, we observed cell size influences on Poisson's ratio of conventional and transformed foams. The theoretical study of the contact problem involving materials with negative Poisson's ratios revealed a further reduction on contact pressure between the contacting two bodies in comparison with materials with positive Poisson's ratio. The classical Hertz contact theory and 3D elasticity solution in an asymptotic form for finite-thickness, layered media indented by an elastic spherical were used.

ISBN: 049675324XSubjects--Topical Terms:

1018410
Applied Mechanics.

The development of advanced materials: Negative Poisson's ratio materials, high damping and high stiffness materials, and composites with negative stiffness inclusions and their stability.
LDR:03477nmm 2200289 4500 001 1847552
005 20051108095423.5
008 130614s2004 eng d
020 $a 049675324X
035 $a (UnM)AAI3128061
035 $a AAI3128061
040 $a UnM $c UnM
100 1 $a Wang, Yun-Che. $3 1935593
245 1 4 $a The development of advanced materials: Negative Poisson's ratio materials, high damping and high stiffness materials, and composites with negative stiffness inclusions and their stability.
300 $a 208 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 1945.
500 $a Supervisor: Roderic S. Lakes.
502 $a Thesis (Ph.D.)--The University of Wisconsin - Madison, 2004.
520 $a The manufacture of negative Poisson's ratio polymeric foams was based on a thermal transformation technique to convert the convex cell shape of conventional foams to a concave or re-entrant shape through triaxial compression and heating. Poisson's ratio measurements were performed with a laser-based setup for non-transparent materials with high accuracy. Contrary to the predictions of the theory of elasticity, we observed cell size influences on Poisson's ratio of conventional and transformed foams. The theoretical study of the contact problem involving materials with negative Poisson's ratios revealed a further reduction on contact pressure between the contacting two bodies in comparison with materials with positive Poisson's ratio. The classical Hertz contact theory and 3D elasticity solution in an asymptotic form for finite-thickness, layered media indented by an elastic spherical were used.
520 $a As for advanced composite materials, theoretically, significant amplification was found in composites' mechanical, thermal, electrical or coupled field properties due to negative stiffness inclusions. Experimentally, we fabricated high damping and high stiffness composite materials, SiC-InSn, to obtain a realization of the prediction from composite theory. With the idea of using negative stiffness components, we manufactured Sn, Zn or Al composites with 1% VO2 particles by volume, where the transforming particles, VO 2, were used as a negative stiffness source, and observed anomalies both in overall stiffness and tan delta. Broadband viscoelastic spectroscopy (BVS) was used to measure mechanical properties. The transformation of the eutectoid ZnAl was studied with resonant ultrasound spectroscopy (RUS), and about a 30% increase in shear modulus and tan delta, respectively, were observed. To investigate the stability of systems with negative stiffness elements, several discrete viscoelastic models were analyzed. With the Lyapunov indirect stability theorem, we found that extreme high mechanical damping can exist in an unconditional stable manner. Equilibrium configurations corresponding to extreme high stiffness were metastable. The metastability was dominated by the viscosity of the systems. The observability of the metastable systems can be achieved when the rate of divergence was slower than the rate of switching states. Strong ellipticity and stability theorems in elasticity for continuum media were studied.
590 $a School code: 0262.
650 4 $a Applied Mechanics. $3 1018410
650 4 $a Engineering, Materials Science. $3 1017759
690 $a 0346
690 $a 0794
710 2 0 $a The University of Wisconsin - Madison. $3 626640
773 0 $t Dissertation Abstracts International $g 65-04B.
790 1 0 $a Lakes, Roderic S., $e advisor
790 $a 0262
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3128061