Variant of the geometrically nonlinear theory of anisotropic shells with allowance for transverse shear

1972 ◽  
Vol 5 (5) ◽  
pp. 766-772
Author(s):  
V. E. Spiro
Keyword(s):  
Nonlinear Theory ◽  
Transverse Shear ◽  
Geometrically Nonlinear ◽  
Geometrically Nonlinear Theory ◽  
Anisotropic Shells

Incompatibility of Martensite Variant Clusters in Self-accommodation Microstructure in Ti-Ni-Pd High Temperature Shape Memory Alloy

2015 ◽  
Vol 1760 ◽  
Author(s):  
Takeshi Teramoto ◽  
Masaki Tahara ◽  
Hideki Hosoda ◽  
Tomonari Inamura
Keyword(s):  
High Temperature ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Habit Plane ◽  
Nonlinear Theory ◽  
Geometrically Nonlinear ◽  
Martensite Variant ◽  
Geometrically Nonlinear Theory ◽  
Electron Backscattering Diffraction ◽  
Diamond Cluster

ABSTRACTThe formation frequency of habit plane variant (HPV) clusters in Ni-25Pd-50Ti shape memory alloy was analyzed using electron backscattering diffraction (EBSD) on the basis of the geometrically nonlinear theory of martensite. Two types of cluster, diamond and wedge, were most commonly observed. The ratio of the formation frequency of the diamond to wedge clusters was approximately 1 : 3, whereas the rotation to keep the kinematic compatibility (KC) condition, θ *, was 3.9° and 0.0032°, respectively. The ratio of the formation frequency is quantified by the value of θ * which is an indicator of the incompatibility of the cluster. The origin of the diamond cluster is discussed based on the degree of incompatibility.

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