New Method to Determine Young’s Modulus of Micro Crystal Based on Raman Spectrometer

Author(s):  
Sheng Bo Sang
1996 ◽  
Vol 99 (4) ◽  
pp. 2183-2187 ◽  
Author(s):  
Qing‐Tian Tao ◽  
Zhi‐Liang Zhang

2006 ◽  
Vol 129 (2) ◽  
pp. 284-292 ◽  
Author(s):  
Pal Jen Wei ◽  
Jen Fin Lin

In this study, the load-depth (P‐h) relationships matching the experimental results of the nanoindentation tests exhibited at the subregions of small and large depths are obtained, respectively. The relationships associated with these two subregions are then linked by the hyperbolic logarithm function to attain a single expression that is applied in the evaluation of the specimen’s elastic recovery ability, as shown in the unloading process. A new method is developed in the present study to evaluate both Young’s modulus and the yield strength of either a ductile or brittle material through the uses of the appropriate P‐h relationships developed in the load and unloading processes. The results of the Young’s modulus and the yield strength achieved by the present method are compared to those obtained from the conventional material tests for a lump material. The scattering of the experimental data shown in the loading and unloading processes are also interpreted by different causes.


Nano Letters ◽  
2006 ◽  
Vol 6 (9) ◽  
pp. 1904-1909 ◽  
Author(s):  
Qihua Xiong ◽  
N. Duarte ◽  
S. Tadigadapa ◽  
P. C. Eklund

2006 ◽  
Vol 3-4 ◽  
pp. 53-58 ◽  
Author(s):  
Atsumi Ohtsuki

This paper describes a development of a new method (: Cantilever Method) to measure Young’s modulus of flexible materials. The method is based on a nonlinear deformation theory that takes into account large deformation behaviors. A set of testing devices was designed and machined. Measurements were carried out on two kinds of flexible materials (PVC: a high-polymer material and SWPA: a steel material). The modulus measured by this method is “Secant modulus”. The results of my evaluation confirm that the new method is suitable for flexible thin plates or rods. Based on the assessments made the method can be further applied to thin sheet and fiber materials (e.g., steel belt, glass fiber, carbon fiber, optical fiber, etc.).


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