Local Stress Analysis Methods Using a Micro Focused X-ray Spectrometer and Computer Simulations for ULSIs

1989 ◽  
Author(s):  
Naoki Yamamoto ◽  
Shinji Sakata
Keyword(s):  
Stress Analysis ◽  
Computer Simulations ◽  
Local Stress ◽  
X Ray ◽  
Analysis Methods

scholarly journals A local stress analysis technology for ULSIS using a micro focused X-ray spectrometer and a computer simulation.

1990 ◽  
Vol 29 (4) ◽  
pp. 256-258
Author(s):  
N. Yamamoto ◽  
S. Sakata ◽  
Y. Hosokawa ◽  
Y. Takano
Keyword(s):  
Computer Simulation ◽  
Stress Analysis ◽  
Local Stress ◽  
X Ray

A High Resolution Study of G.P. Zones in Aluminum - 4.2 at % Silver

1982 ◽  
Vol 40 ◽  
pp. 722-723 ◽  
Author(s):  
R. Gronsky
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
High Resolution ◽  
Computer Simulations ◽  
Structural Characteristics ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Resolution Study

The phenomenon of clustering in Al-Ag alloys has been extensively studied since the early work of Guinierl, wherein the pre-precipitation state was characterized as an assembly of spherical, ordered, silver-rich G.P. zones. Subsequent x-ray and TEM investigations yielded results in general agreement with this model. However, serious discrepancies were later revealed by the detailed x-ray diffraction - based computer simulations of Gragg and Cohen, i.e., the silver-rich clusters were instead octahedral in shape and fully disordered, atleast below 170°C. The object of the present investigation is to examine directly the structural characteristics of G.P. zones in Al-Ag by high resolution transmission electron microscopy.

Scale transition models and X-ray stress analysis

2003 ◽  
Vol 100 (12) ◽  
pp. 1137-1149
Author(s):  
M. François
Keyword(s):  
Stress Analysis ◽  
X Ray ◽  
Scale Transition ◽  
Transition Models

The Structure Features of Synthetic Apatites With Ree Impurities by Data of Spectroscopy and X-Ray Analysis Methods: II. Fluorhydroxyapatites

2016 ◽  
Vol 38 (2) ◽  
pp. 15-32
Author(s):  
E. Kalinichenko ◽  
A. Brik ◽  
A. Nikolaev ◽  
A. Kalinichenko ◽  
O. Frank-Kamenetskaya ◽  
...  
Keyword(s):  
X Ray ◽  
Analysis Methods

Application of a high temperature chamber for X-ray stress analysis

2005 ◽  
Vol 47 (5) ◽  
pp. 294-298
Author(s):  
Michael H. Ott ◽  
Andreas Kämpfe ◽  
Detlef Löhe
Keyword(s):  
High Temperature ◽  
Stress Analysis ◽  
X Ray

Comparative study of stress analysis of gears with different helix angle using the ISO 6336 standard and tooth contact analysis methods

2016 ◽  
Vol 230 (7-8) ◽  
pp. 1350-1358 ◽  
Author(s):  
Layue Zhao ◽  
Robert C Frazer ◽  
Brian Shaw
Keyword(s):  
Stress Analysis ◽  
Contact Stress ◽  
Helix Angle ◽  
Contact Analysis ◽  
Bending Stress ◽  
Contact Ratio ◽  
Tooth Contact Analysis ◽  
Tooth Contact ◽  
Iso Standard ◽  
Analysis Methods

With increasing demand for high speed and high power density gear applications, the need to optimise gears for minimum stress, noise and vibration becomes increasingly important. ISO 6336 contact and bending stress analysis are used to determine the surface load capacity and tooth bending strength but dates back to 1956 and although it is constantly being updated, a review of its performance is sensible. Methods to optimise gear performance include the selection of helix angle and tooth depth to optimise overlap ratio and transverse contact ratio and thus the performance of ISO 6336 and tooth contact analysis methods requires confirmation. This paper reviews the contact and bending stress predicted with four involute gear geometries and proposes recommendations for stress calculations, including a modification to contact ratio factor Zɛ which is used to predict contact stress and revisions to form factor YF and helix angle factor Yβ which are cited to evaluate bending stress. The results suggest that there are some significant deviations in predicted bending and contact stress values between proposal methods and original ISO standard. However, before the ISO standard is changed, the paper recommends that allowable stress numbers published in ISO 6336-5 are reviewed because the mechanisms that initiate bending and contact fatigue have also changed and these require updating.

scholarly journals 50 Hz X‐Ray Diffraction Stress Analysis and Numerical Process Simulation at Laser Surface Line Hardening of Web Structures

2021 ◽  
Author(s):  
Dominik Kiefer ◽  
Florian Lang ◽  
Nicola Simon ◽  
Felix Beckmann ◽  
Fabian Wilde ◽  
...  
Keyword(s):  
Stress Analysis ◽  
Process Simulation ◽  
Laser Surface ◽  
X Ray Diffraction ◽  
X Ray ◽  
Numerical Process

scholarly journals Re-evaluation of formulae for X-ray stress analysis in polycrystalline specimens with fibre texture. Erratum

2009 ◽  
Vol 42 (3) ◽  
pp. 547-547
Author(s):  
Ryouichi Yokoyama ◽  
Jimpei Harada
Keyword(s):  
Stress Analysis ◽  
X Ray ◽  
Fibre Texture

Errors in the paper by Yokoyama & Harada [J. Appl. Cryst.(2009),42, 185–191] are corrected.

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