scholarly journals Measurement of Multiaxial Ply Strength by an Off-Axis Flexure Test

Author(s):  
JH Crews ◽  
RA Naik
Keyword(s):  
2010 ◽  
Vol 44 (21) ◽  
pp. 2487-2507 ◽  
Author(s):  
G. Vargas ◽  
F. Mujika

The aim of this work is to compare from an experimental point of view the determination of in-plane shear strength of unidirectional composite materials by means of two off-axis tests: three-point flexure and tensile. In the case of the off-axis three-point flexure test, the condition of small displacements and the condition of lift-off between the specimen and the fixture supports have been taken into account. Some considerations regarding stress and displacement fields are presented. The in-plane shear characterization has been performed on a carbon fiber reinforced unidirectional laminate with several fiber orientation angles: 10°, 20°, 30°, and 45°. Test conditions for both off-axis experimental methods, in order to ensure their applicability, are presented. Off-axis flexure test is considered more suitable than off-axis tensile test for the determination of in-plane shear strength.


2015 ◽  
Vol 143 ◽  
pp. 63-79 ◽  
Author(s):  
A. Boyano ◽  
V. Mollón ◽  
J. Bonhomme ◽  
J. De Gracia ◽  
A. Arrese ◽  
...  

Author(s):  
Rui Chen ◽  
Justin H. Chow ◽  
Christine Taylor ◽  
Jeffrey Meth ◽  
Suresh K. Sitaraman

2008 ◽  
Vol 368-372 ◽  
pp. 1618-1620 ◽  
Author(s):  
Li Tong Guo ◽  
Ji Qiang Gao ◽  
Xiao Chen Liu ◽  
Tian Wen Guo ◽  
Zeng Ying He

Low-fusing dental porcelain was fused on titanium surface. The adhesion between the titanium and porcelain was evaluated by three-point flexure test. It was shown that the failure of the titaniumporcelain predominantly occurred at the alloy-oxide interface. Rutile phase was present on the interface debonding from porcelain. The influence of corrosion on bonding strength was also investigated. The results suggested that, after being immersed in artificial saliva with pH of 2.7, 5.4 and 7.0, no decreasing of the bonding strength of Ti-porcelain occurred.


Author(s):  
Wei-Yang Lu ◽  
John Korellis ◽  
Terry Hinnerichs

The orthotropic crush model has commonly been used to describe the constitutive behavior of honeycomb [1]. To completely define the model parameters of a honeycomb, experimental data of axial crushes in T, L, and W principal directions as well as shear stress-strain curves in TL, TW, and LW planes are required. The axial crushes of high-density aluminum honeycombs, e.g., 38 pcf (pound per cubic foot), under various loading speeds and temperatures have been investigated and reported [2]. This paper describes experiments and model simulations of the shear deformation of the same high-density aluminum honeycomb. Results of plate shear test, beam flexure test, and off-axis compression are presented and discussed.


2010 ◽  
Vol 77 (1) ◽  
pp. 51-70 ◽  
Author(s):  
A. Arrese ◽  
N. Carbajal ◽  
G. Vargas ◽  
F. Mujika
Keyword(s):  
Mode Ii ◽  

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