Direct Holographic Determination Of The Rotation And Strain Fields By Means Of The Fringe Visibility Method

1986 ◽  
Author(s):  
Marek J. Matczak
Keyword(s):  
Fringe Visibility ◽  
Strain Fields

Determination of Strain Rate Depended Stress and Strain Fields in PVD Coatings on Cemented Carbide Inserts during the Repetitive Impact Test

2020 ◽  
Vol 404 ◽  
pp. 45-52
Author(s):  
Antonios Bouzakis ◽  
Georgios Skordaris ◽  
Konstantinos Dionysios Bouzakis ◽  
Mehmet Gökhan Gökcen ◽  
Apostolos Boumpakis ◽  
...  
Keyword(s):  
Strain Rate ◽  
Cemented Carbide ◽  
Stress And Strain ◽  
Strain Fields ◽  
Rate Dependent ◽  
Impact Forces ◽  
Repetitive Impact ◽  
Carbide Inserts ◽  
Fatigue Endurance

Recently, stress, strain, strain-rate dependent curves for cemented carbide have become an established tool for evaluating the mechanical properties. In this paper, related strain-rate dependent data of a K05 insert were employed to define the developed stress and strain fields occurring in the compound coating-substrate at impact forces of various durations. In this way, the occurring maximum strains at various impact loads and times were analytically calculated. These maximum values and related fatigue endurance coating strain-rate dependent limits were consequently used to validate published coating fatigue critical impact forces associated with certain impact times.

Lomer Dislocations in Al: Deformation Field Analysis

1994 ◽  
Vol 47 (6S) ◽  
pp. S321-S325
Author(s):  
Rob Phillips
Keyword(s):  
High Resolution ◽  
Microscopic Analysis ◽  
Field Analysis ◽  
Atomistic Simulations ◽  
Image Simulation ◽  
Strain Fields ◽  
High Resolution Data ◽  
Trial Structure ◽  
Traditional Approaches

We examine two issues that arise in connection with the description of dislocations in metals. First, the experiments of Mills and Stadelmann on Lomer dislocations in Al are considered in light of atomistic simulations of their core structures. It is shown that the results of such a microscopic analysis are consistent with those obtained earlier on the basis of image simulation. Secondly, we examine these Lomer dislocations using the recently developed technique of Computational Fourier Transform Moire` (CFTM) analysis. This technique allows for a determination of the strain fields near a defect directly from a high-resolution image without the necessity of obtaining a trial structure for the defect, complementing traditional approaches to the interpretation of high-resolution data.

On a direct determination of non-uniform internal strain fields using fibre Bragg gratings

2004 ◽  
Vol 14 (1) ◽  
pp. 127-136 ◽  
Author(s):  
Philippe Giaccari ◽  
Gabriel R Dunkel ◽  
Laurent Humbert ◽  
John Botsis ◽  
Hans G Limberger ◽  
...  
Keyword(s):  
Direct Determination ◽  
Bragg Gratings ◽  
Internal Strain ◽  
Strain Fields ◽  
Fibre Bragg Gratings
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