Analysis of micro-Raman spectra combined with electromagnetic simulation and stress simulation for local stress distribution in Si devices

2012 ◽  
Vol 101 (24) ◽  
pp. 243511 ◽  
Author(s):  
Tetsuya Tada ◽  
Vladimir Poborchii ◽  
Toshihiko Kanayama
Keyword(s):  
Stress Distribution ◽  
Raman Spectra ◽  
Local Stress ◽  
Electromagnetic Simulation ◽  
Stress Simulation

Evaluation of Local Stress Distribution Near Notch and Crack Tips in Al2O3 by Synchrotron Radiation

2005 ◽  
Vol 490-491 ◽  
pp. 35-40 ◽  
Author(s):  
Yoshihisa Sakaida ◽  
Yozo Sawaki ◽  
Keisuke Tanaka ◽  
Yoshiaki Akiniwa
Keyword(s):  
Synchrotron Radiation ◽  
Stress Distribution ◽  
Local Stress ◽  
Crack Tips

Modelling Recovery and Recrystallisation Kinetics after Intercritical Deformation in 0.19 wt% C 1.5 wt% Mn Steel

2004 ◽  
Vol 467-470 ◽  
pp. 329-334 ◽  
Author(s):  
A. Smith ◽  
A. Miroux ◽  
Haiwen Luo ◽  
Jilt Sietsma ◽  
Sybrand van der Zwaag
Keyword(s):  
Stress Relaxation ◽  
Stress Distribution ◽  
Strain Distribution ◽  
Local Stress ◽  
Stress Strain ◽  
Simple Modification ◽  
Single Grain ◽  
Grain Model ◽  
Mn Steel ◽  
Kinetics Of

The softening kinetics of a 0.19 wt% C 1.5 wt% Mn steel deformed at two intercritical temperatures have been characterised using the stress relaxation technique. Recrystallisation of intercritical austenite has been modelled using a single grain model (Chen et al., 2002 [1]), whilst recovery of both intercritical austenite and ferrite has been modelled using a model in the literature [Verdier et al., 1999 [2]). The models are combined to predict the overall softening kinetics with a rule of mixtures formulation. Comparison of the model with experiment shows significant deviations. The reasons are discussed with reference to the mixture rule and to the local stress-strain distribution which exists in the deformed samples. A simple modification to the model is proposed which takes into account the effect of a local stress distribution in deformed austenite.

Cross Sectional Local Stress Distribution for Trench Isolation

1991 ◽  
Author(s):  
Mamoru Tomozane ◽  
Barbara Vasquez ◽  
Teruki Ikeda
Keyword(s):  
Stress Distribution ◽  
Local Stress ◽  
Cross Sectional ◽  
Trench Isolation

Analysis Research of Frame-Supported Transfer Beam with Opening Using Finite Element

2010 ◽  
Vol 163-167 ◽  
pp. 1620-1625
Author(s):  
Ji Yao ◽  
Ze Li ◽  
Ming Jun Peng
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Mechanical Behavior ◽  
Local Stress ◽  
Weak Spot ◽  
High Rise ◽  
Finite Element Software ◽  
Weak Part ◽  
Working Performance

This paper presents research on mechanical behavior of frame-supported transfer beams with or without opening in the high-rise buildings using commercial finite element software ANSYS. The result indicated that the hole only impacted the local stress distribution of transfer beam. From the overall view, stress distribution of frame-supported transfer beam with or without opening was almost same. But hole undermined the whole working performance of transfer beam and reduced transfer beam bearing capacity. Influence of the hole as the result of the stress concentration on transfer beam maked the spot became weak part. This weak spot needed to be strengthened in the practical struction members.

scholarly journals Protruded Four-Point Bending Testing Method and Characterization of Near Interface Cracking in Thermal Barrier Coatings

1999 ◽  
Author(s):  
Zhehua Zhang ◽  
T. E. Bloomer ◽  
J. Kameda ◽  
S. Sakurai
Keyword(s):  
Stress Distribution ◽  
Thermal Barrier Coatings ◽  
Local Stress ◽  
Thermal Barrier ◽  
Element Analysis ◽  
Cracking Behavior ◽  
Barrier Coatings ◽  
Testing Method ◽  
Four Point Bending ◽  
Plasma Sprayed

A protruded four-point bending testing method has been developed to characterize the crack initiation of thermal barrier coatings (TBC) near the interface. Two types of protruded TBC specimens, with and without a reinforcement attached on the top of the protruded TBC, were prepared from in-service used transition ducts made of TBC (6% Y2O3 stabilized ZrO2) and bond coatings (NiCoCrAlY) plasma-sprayed over a superalloy substrate. In the unreinforced protruded TBC specimen tests, pre-existing TBC cracks extended in the transverse direction while near interface TBC cracking did not occur. The reinforced protruded TBC specimen hindered the transverse TBC cracking and allowed the formation of TBC cracks adjacent to the oxidized TBC/bond coating interface in a similar mode to in-service TBC spalling. The onset of TBC cracks was identified by a change in the loading rate in the elastic deformation regime. The local stress distribution at the edges of the reinforced protruded TBC was analyzed using finite element analysis. The critical local tensile stress for the initiation of TBC cracks near the interface was estimated for the in-service used transition duct. The near interface TBC cracking behavior in the protruded TBC tests is discussed in light of the applied and residual stress distribution.

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