scholarly journals Mechanical Testing Methods for Measuring Young's Modulus of Thin Flexible Multi-layered Materials (Own-Weight Multi-layered Cantilever Method)

2011 ◽  
pp. 25-31
Author(s):  
Atsumi OHTSUKI ◽  
Masatoshi SUZUKI
Keyword(s):  
Young’S Modulus ◽  
Mechanical Testing ◽  
Young's Modulus ◽  
Layered Materials ◽  
Testing Methods

scholarly journals Synthesis, Characterization, and Modeling of Nanotube Materials with Variable Stiffness Tethers

2004 ◽  
Vol 851 ◽  
Author(s):  
S. J. V. Frankland ◽  
M. N. Herzog ◽  
G. M. Odegard ◽  
T. S. Gates ◽  
C. C. Fay
Keyword(s):  
Carbon Nanotube ◽  
Young’S Modulus ◽  
Mechanical Testing ◽  
Storage Modulus ◽  
Young's Modulus ◽  
Base Material ◽  
Variable Stiffness ◽  
Cross Linking ◽  
The Cross

ABSTRACTSynthesis, mechanical testing, and modeling have been performed for a carbon nanotube material in which the nanotubes are functionalized with variable stiffness tethers (VST) capable of cross-linking the nanotubes. Tests using nanoindentation indicated a six-fold enhancement in the storage modulus when comparing the base material (the cross-linking agent with no nanotubes) to the composite (functionalized nanotube material) that contained 5.3 wt% of nanotubes. To understand how crosslinking the nanotubes may further alter the stiffness, a model of the system was constructed using nanotubes crosslinked with the VST. The model predicted that for a composite with 5 wt% nanotubes at random orientations, crosslinked with the VST, the bulk Young's modulus was reduced to 30% that of the non-crosslinked equivalent.

scholarly journals Mechanical Characterisation of Polybutadiene-Cellulose Diacetate Composites

1995 ◽  
Vol 4 (3) ◽  
pp. 096369359500400
Author(s):  
G. Hernández ◽  
R. Rodríguez ◽  
A. Maciel ◽  
M.V. García-Garduño ◽  
V.M. Castaño
Keyword(s):  
Young’S Modulus ◽  
Mechanical Testing ◽  
Young's Modulus ◽  
Interfacial Bonding ◽  
Cellulose Diacetate ◽  
Chemically Modified ◽  
Mechanical Characterisation ◽  
Mechanical Models

Mechanical testing the behaviour of polybutadiene-cellulose diacetate (functionallized) was performed. The cellulose diacetate was chemically modified to improve the interfacial bonding between the components. The results indicate that the Young's modulus is increased substantially as the content of the functionallized component is increased. Finally, a comparison to theoretical mechanical models is shown.

scholarly journals An Innovative Circular Ring Method for Measuring Young’s Modulus of Thin Flexible Multi-Layered Materials

Proceedings ◽  
2018 ◽  
Vol 2 (8) ◽  
pp. 553
Author(s):  
Atsumi Ohtsuki
Keyword(s):  
Young’S Modulus ◽  
Young's Modulus ◽  
Horizontal Displacement ◽  
Vertical Displacement ◽  
Layered Materials ◽  
Circular Ring ◽  
Thin Layers ◽  
New Method ◽  
Thin Wires ◽  
Ring Method

An innovative mechanical testing method (Compressive Circular Ring Method) is provided for measuring Young’s modulus of each layer in a flexible multi-layered material. The method is based on a nonlinear large deformation theory. By just measuring the vertical displacement or the horizontal displacement of the ring, Young’s modulus of each layer can be easily obtained for various thin multi-layered materials. Measurements were carried out on an electrodeposited twolayered wire. The results confirm that the new method is suitable for flexible multi-layered thin wires. In the meantime, the new method can be applied widely to measure Young’s modulus of thin layers formed by PVD, CVD, Coating, Paint, Cladding, Lamination, and others.

scholarly journals Mechanical Researches on Young's Modulus of SCS Nanostructures

2009 ◽  
Vol 2009 ◽  
pp. 1-6 ◽  
Author(s):  
Qinhua Jin ◽  
Tie Li ◽  
Ping Zhou ◽  
Yuelin Wang
Keyword(s):  
Young’S Modulus ◽  
Surface Effect ◽  
Young's Modulus ◽  
Tensile Tests ◽  
Testing Methods ◽  
Bending Tests ◽  
Resonance Test ◽  
Experimental Errors ◽  
The Difference ◽  
Experimental Researches

Nanostructures of SingleCrystalSilicon (SCS) with superior electrical, mechanical, thermal, and optical properties are emerging in the development of novel nanodevices. Mechanical properties especially Young's modulus are essential in developing and utilizing such nanodevices. In this paper, experimental researches including bending tests, resonance tests, and tensile tests on Young' s modulus of nanoscaled SCS are reviewed, and their results are compared. It was found that the values ofEmeasured by different testing methods cannot match to each other. As the differences cannot be explained as experimental errors, it should be understood by taking surface effect into account. With a simplified model, we qualitatively explained the difference inEvalue measured by tensile test and by resonance test for Si nanobeams.

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