An experimental characterization of the acoustically dissipative properties of light-weight nanocomposite polyurethane foams augmented with carbon nanotubes

2012 ◽  
Vol 131 (4) ◽  
pp. 3271-3271 ◽  
Author(s):  
Andrew Willemsen
Keyword(s):  
Carbon Nanotubes ◽  
Polyurethane Foams ◽  
Light Weight ◽  
Experimental Characterization

scholarly journals Experimental Characterization of Traditional Mortars and Polyurethane Foams in Masonry Wall

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Dora Foti ◽  
Michela Lerna ◽  
Vitantonio Vacca
Keyword(s):  
Applied Load ◽  
Thermal Inertia ◽  
Masonry Wall ◽  
Polyurethane Foams ◽  
Masonry Walls ◽  
Masonry Buildings ◽  
Experimental Characterization ◽  
Shear Tests ◽  
The Poor

Masonry is a composite material largely used in construction. It exhibits several advantages, including significant compressive strength, thermal inertia, and aesthetic beauty. A disadvantage of masonry is mainly related to the inadequate shear strength due to the poor capacity and ductility of the adopted mortar. This aspect is crucial in seismic areas. In this paper, the behavior of polyurethane foams, used as adhesives for the construction of thin joints brick masonry walls, has been investigated. First, the characterization of components was carried out, followed by laboratory uniaxial tests on masonry walls and shear tests on triplets. Moreover, a comparison of the behavior of the foam-brick walls with respect to the traditional mortars masonry was carried out, as the type of joints varies and the arrangement of the holes of the bricks varies with respect to the direction of the applied load. Results provide indications on which adhesive has to be adopted for masonry buildings in reference to the site of construction (i.e., seismic hazard).

Experimental characterization of a pultruded GFRP bridge deck for light-weight vehicles

2007 ◽  
Vol 80 (1) ◽  
pp. 141-151 ◽  
Author(s):  
Jaehong Lee ◽  
Youngbin Kim ◽  
Jinwoo Jung ◽  
John Kosmatka
Keyword(s):  
Bridge Deck ◽  
Light Weight ◽  
Experimental Characterization

Preparation and Characterization of Aluminium Nanocomposites Based on MWCNT

2014 ◽  
Vol 550 ◽  
pp. 30-38
Author(s):  
S. Sivananthan ◽  
S. Gnanasekaran ◽  
Jerold Samuel C. Samson
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Metal Matrix ◽  
High Strength ◽  
Light Weight ◽  
Matrix Composites ◽  
Wide Range ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Metal Matrix Composites (MMC) has wide range of engineering applications such as high strength, temperature, stiffness, yield strength and modulus of rigidity. Among the metals, aluminium is widely used due to its light weight. However, the electrical conductivity of aluminium is low when compared with copper. This paper deals with the development of aluminium nanocomposites based on Multi Walled Carbon Nanotubes (MWCNT) in order to enhance the electrical resistivity of aluminium. Morphology and electrical properties of the nanocomposites has been analyzed and compared with aluminium.

Simulation and experimental characterization of polymer/carbon nanotubes composites for strain sensor applications

2014 ◽  
Vol 116 (5) ◽  
pp. 054307 ◽  
Author(s):  
B. De Vivo ◽  
P. Lamberti ◽  
G. Spinelli ◽  
V. Tucci ◽  
L. Vertuccio ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Strain Sensor ◽  
Experimental Characterization ◽  
Sensor Applications

Experimental Characterization of the Reliability of 3-Terminal Dual-Damascene Copper Interconnect Trees

2002 ◽  
Vol 716 ◽  
Author(s):  
C. L. Gan ◽  
C. V. Thompson ◽  
K. L. Pey ◽  
W. K. Choi ◽  
F. Wei ◽  
...  
Keyword(s):  
Stress Conditions ◽  
Experimental Characterization ◽  
Contact Lines ◽  
Tree Structures ◽  
Similar Test ◽  
Dual Damascene ◽  
Copper Interconnect ◽  
Test Conditions

AbstractElectromigration experiments have been carried out on simple Cu dual-damascene interconnect tree structures consisting of straight via-to-via (or contact-to-contact) lines with an extra via in the middle of the line. As with Al-based interconnects, the reliability of a segment in this tree strongly depends on the stress conditions of the connected segment. Beyond this, there are important differences in the results obtained under similar test conditions for Al-based and Cu-based interconnect trees. These differences are thought to be associated with variations in the architectural schemes of the two metallizations. The absence of a conducting electromigrationresistant overlayer in Cu technology, and the possibility of liner rupture at stressed vias lead to significant differences in tree reliabilities in Cu compared to Al.

Experimental Characterization of Mechanical Behavior of Cord-Rubber Composites

1982 ◽  
Vol 10 (1) ◽  
pp. 37-54 ◽  
Author(s):  
M. Kumar ◽  
C. W. Bert
Keyword(s):  
Response Characteristic ◽  
Cord Compression ◽  
Complete Characterization ◽  
Strain Response ◽  
Strain Gages ◽  
Experimental Characterization ◽  
Rubber Composites ◽  
Stress Strain ◽  
Strain Data

Abstract Unidirectional cord-rubber specimens in the form of tensile coupons and sandwich beams were used. Using specimens with the cords oriented at 0°, 45°, and 90° to the loading direction and appropriate data reduction, we were able to obtain complete characterization for the in-plane stress-strain response of single-ply, unidirectional cord-rubber composites. All strains were measured by means of liquid mercury strain gages, for which the nonlinear strain response characteristic was obtained by calibration. Stress-strain data were obtained for the cases of both cord tension and cord compression. Materials investigated were aramid-rubber, polyester-rubber, and steel-rubber.

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