Real-time stress analysis of low-temperature Ge nanodot growth on H-terminated Si(111) 1×1 and Si(111) 7×7 surfaces

2008 ◽  
Vol 8 (3-4) ◽  
pp. 246-248 ◽  
Author(s):  
H. Asaoka ◽  
T. Yamazaki ◽  
S. Shamoto
Keyword(s):  
Low Temperature ◽  
Stress Analysis ◽  
Real Time ◽  
Time Stress

scholarly journals Real time stress analysis by a scanning infrared camera.

1986 ◽  
Vol 52 (478) ◽  
pp. 1553-1558
Author(s):  
Masaki SHIRATORI ◽  
Toshiro MIYOSHI ◽  
Akihisa MARUYAMA ◽  
Takashi NAKANISHI
Keyword(s):  
Stress Analysis ◽  
Real Time ◽  
Infrared Camera ◽  
Time Stress

scholarly journals Photogrammetric Process to Monitor Stress Fields Inside Structural Systems

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4023
Author(s):  
Leonardo M. Honório ◽  
Milena F. Pinto ◽  
Maicon J. Hillesheim ◽  
Francisco C. de Araújo ◽  
Alexandre B. Santos ◽  
...  
Keyword(s):  
Boundary Element ◽  
Real Time ◽  
Stress Fields ◽  
Structural Systems ◽  
Unknown Boundary ◽  
Stress Distributions ◽  
Displacement Fields ◽  
Time Stress ◽  
Beam Surface ◽  
Measured Displacement

This research employs displacement fields photogrammetrically captured on the surface of a solid or structure to estimate real-time stress distributions it undergoes during a given loading period. The displacement fields are determined based on a series of images taken from the solid surface while it experiences deformation. Image displacements are used to estimate the deformations in the plane of the beam surface, and Poisson’s Method is subsequently applied to reconstruct these surfaces, at a given time, by extracting triangular meshes from the corresponding points clouds. With the aid of the measured displacement fields, the Boundary Element Method (BEM) is considered to evaluate stress values throughout the solid. Herein, the unknown boundary forces must be additionally calculated. As the photogrammetrically reconstructed deformed surfaces may be defined by several million points, the boundary displacement values of boundary-element models having a convenient number of nodes are determined based on an optimized displacement surface that best fits the real measured data. The results showed the effectiveness and potential application of the proposed methodology in several tasks to determine real-time stress distributions in structures.

Real-time stress assessment using thermal imaging

2015 ◽  
Vol 32 (11) ◽  
pp. 1369-1377 ◽  
Author(s):  
Kan Hong ◽  
Sheng Hong
Keyword(s):  
Real Time ◽  
Thermal Imaging ◽  
Stress Assessment ◽  
Time Stress

scholarly journals Single-molecule real-time sequencing of the full-length transcriptome of loquat under low-temperature stress

PLoS ONE ◽  
2020 ◽  
Vol 15 (9) ◽  
pp. e0238942
Author(s):  
Cuiping Pan ◽  
Yongqing Wang ◽  
Lian Tao ◽  
Hui Zhang ◽  
Qunxian Deng ◽  
...  
Keyword(s):  
Low Temperature ◽  
Real Time ◽  
Temperature Stress ◽  
Single Molecule ◽  
Low Temperature Stress ◽  
Full Length

On-Line Remaining Life Assessment of Hot Reheat Pipe Bend

2005 ◽  
Author(s):  
B. K. Dutta ◽  
S. Guin ◽  
M. K. Samal
Keyword(s):  
Stress Analysis ◽  
Real Time ◽  
Control Valve ◽  
Life Assessment ◽  
Fe Model ◽  
Remaining Life ◽  
Process Data ◽  
Pipe Bend ◽  
Constant Weight ◽  
On Line

An ageing in-service Hot Reheat (HRH) pipe bend before Intermediate Pressure (IP) Stop/ Control Valve of a Utility was identified for real-time creep-fatigue damage assessment. A data acquisition system has been installed to record thermal hydraulic parameters, such as pressure, temperature and flow on real time basis. The HRH piping including low pressure bypass line incorporating various supports such as directional restraints, constant weight hangers and spring hangers, was modeled using straight and bend elements. Static stress analysis was performed to find out the forces and moments at either ends of the pipe-bend for sustained and expansion loadings using piping analysis program CAESAR-II. A detailed 3-D Finite Element Model of the pipe bend was also developed using 20-noded brick elements. The 3-D FE model along with material parameters and loading are used by code BOSSES for on-line monitoring of damage. The nodal temperatures (obtained by temperature transient analysis), recorded internal pressure, associated piping loads, etc. are then used in a stress analysis module to calculate stresses at different gauss points of the pipe bend. The temperatures and stresses at different time are then used to compute fatigue and creep damage and to assess growth of different postulated cracks at various locations of pipe bend, as well as remaining life. All the information are upgraded and restart files are saved for successive computation. The real-time process data of the pipe bend are made available to the Researcher’s Desk through Client-Server Network.

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