Micromechanics modeling of shape memory alloy fiber composites with slightly weakened interfaces

2008 ◽  
Author(s):  
R. Avazmohammadi ◽  
J. Arghavani ◽  
R. Naghdabadi
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Fiber Composites ◽  
Micromechanics Modeling

Study on Enhancement of Mechanical Strength by Knotted Shape Memory Alloy Fiber in TiNi Fiber Composites

2008 ◽  
Vol 385-387 ◽  
pp. 421-424
Author(s):  
Yong Li Zhao ◽  
Jie Li ◽  
Ming Jin
Keyword(s):  
Shape Memory Alloy ◽  
Mechanical Strength ◽  
Shape Memory ◽  
Fiber Composite ◽  
Stress Transfer ◽  
Fiber Composites ◽  
Tension Test ◽  
Fiber Tension ◽  
The Matrix ◽  
Straight Fiber

In this paper, the experimental investigation into the enhancement of mechanical strength in shape memory alloy (SMA) fiber composites is made by using knotted fiber at the two ends instead of straight fiber. TiNi SMA fiber with both ends knotted is used for purpose of better ensuring stress transfer from the matrix to the fiber than straight fiber. Tension test is carried out above the austenitic finish temperature in air. Specimens are heated by means of electrical resistive lamplight heating. The results indicate that the mechanical strength is larger in the knotted fiber composite than in the straight fiber composite. Knotted fiber exerts the superiority of TiNi SMA fiber composite.

Stress distributions in single shape memory alloy fiber composites

2011 ◽  
Vol 32 (7) ◽  
pp. 3783-3789 ◽  
Author(s):  
Yulong Wang ◽  
Limin Zhou ◽  
Zhenqing Wang ◽  
Haitao Huang ◽  
Lin Ye
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Fiber Composites ◽  
Stress Distributions

Variational Estimates for the Effective Response of Shape Memory Alloy Actuated Fiber Composites

2002 ◽  
Vol 69 (4) ◽  
pp. 470-480 ◽  
Author(s):  
J. P. Briggs ◽  
P. Ponte Castaneda
Keyword(s):  
Composite Materials ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Thermal Activation ◽  
Fiber Composites ◽  
Homogenization Procedure ◽  
Effective Response ◽  
Linear Elastic ◽  
The Matrix ◽  
Active Composite

The homogenization procedure of Ponte Castan˜eda is used to estimate the effective behavior of active composite materials consisting of aligned shape memory alloy (SMA) fibers embedded in a linear elastic matrix. Results are presented for thermal activation of the SMA with various applied tractions on the composite. While increasing stiffness of the matrix phase inhibits the contraction of the SMA, the simulations indicate that the use of a prestress in the manufacturing of the composite may provide an increase in the response time of the system without reducing performance.

Sign in / Sign up

Export Citation Format

Share Document