X-Ray Triaxial Evaluation of Thermal Residual Stress in Continuous Alumina Fiber Reinforced Aluminum Composite.

1994 ◽  
Vol 43 (490) ◽  
pp. 792-798 ◽  
Author(s):  
Yasukazu IKEUCHI ◽  
Koji IGA ◽  
Takao HANABUSA
Keyword(s):  
Residual Stress ◽  
Thermal Residual Stress ◽  
Alumina Fiber ◽  
Fiber Reinforced ◽  
Aluminum Composite ◽  
X Ray

Studying the nonlinear properties and strain-rate sensitivity of SiC short fiber-reinforced Al matrix composites

2017 ◽  
Vol 24 (4) ◽  
pp. 521-529
Author(s):  
Junjie Ye ◽  
Yuanying Qiu ◽  
Yumin He ◽  
Juan Ma ◽  
Xinglong Zhang ◽  
...  
Keyword(s):  
Residual Stress ◽  
Composite Structures ◽  
Early Stage ◽  
Strain Analysis ◽  
Prediction Method ◽  
Short Fiber ◽  
Thermal Residual Stress ◽  
Fiber Reinforced ◽  
Nonlinear Properties ◽  
Stress Influences

AbstractStress-strain analysis has been an interesting issue for the mechanical design of composite structures. In this paper, a three-dimensional mechanical model based on generalized method of cells is presented to study the thermal residual stress and loading rates influence on the mechanical responses of short fiber-reinforced (SFR) composites. The effects of the fiber shape on the elastic constant of the SFR were investigated. To verify the prediction method, the calculated elastic modulus was compared with the results of finite element method. On this basis, a unified constitutive model is used to acquire the nonlinear properties of matrix materials. For comparison, SFR composites with and without consideration of thermal residual stress influences on the nonlinear responses are both considered. The results show that the distinct difference for SFR composites can be found at an early stage of loading. Meanwhile, the thermal residual stress influences on the mechanical behaviors present two characteristic stages.

Residual Stresses in Locally Long Fiber Reinforced Aluminum Parts

2011 ◽  
Vol 284-286 ◽  
pp. 284-292 ◽  
Author(s):  
Shao Chun Sun ◽  
Zhi Yuan Chen ◽  
Qiang Wu ◽  
De Xin Ma ◽  
Yu Tao Zhao
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Residual Stresses ◽  
Tensile Residual Stress ◽  
Fiber Reinforced ◽  
X Ray Diffraction ◽  
X Ray ◽  
Fem Method ◽  
The Matrix ◽  
Compressive Residual Stresses

In locally long fiber reinforced aluminum parts two types residual stresses exist. They are the microscopic residual stress between fiber and matrix and the macroscopic residual stress between reinforced and unreinforced zones. The residual stresses between fiber and matrix in γ-Al2O3 long fiber reinforced aluminum alloy Al-6-1-1 were measured with X-ray Diffraction process as well as simulated with FEM method. The results indicated that the residual stresses in both fiber and matrix were distributed very unequally. The maximum tensile residual stress occurred at the boundary in the matrix and the maximum compressive residual stresses occurred near the boundary in the fiber. The macroscopic residual stresses between the reinforced and unreinforced zones were also measured with borehole method as well as simulated with FEM. It was found that the macroscopic residual stresses at most locations in both the reinforced and unreinforced zones were not harmfully high. However in both reinforced and unreinforced zones there were small sub-zones of very large tensile residual stresses.

Response of an alumina fiber-reinforced aluminum composite to combined tension torsion

1992 ◽  
Vol 32 (1) ◽  
pp. 49-53 ◽  
Author(s):  
N. Tsangarakis ◽  
G. P. Pelletier ◽  
M. S. Pepi
Keyword(s):  
Alumina Fiber ◽  
Fiber Reinforced ◽  
Aluminum Composite
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