A Study on the Determination of Fracture Parameters for Rubber Toughened Polymeric Materials Using on Instrumented Charpy Impact Test

2002 ◽  
Vol 26 (8) ◽  
pp. 1520-1526
Author(s):  
Myeong-Gyun Park ◽  
Yeong-Sik Choe ◽  
Se-Man Park ◽  
Jin-Seung Yang
Keyword(s):  
Impact Test ◽  
Charpy Impact ◽  
Polymeric Materials ◽  
Charpy Impact Test ◽  
Fracture Parameters ◽  
Rubber Toughened

Verification of the Charpy Impact Test Capability to Determine the Constants of the Johnson-Cook Model

2016 ◽  
Vol 250 ◽  
pp. 197-202 ◽  
Author(s):  
Michal Stopel Stopel ◽  
Dariusz Skibicki
Keyword(s):  
Experimental Test ◽  
Impact Test ◽  
Charpy Impact ◽  
Material Model ◽  
Charpy Impact Test ◽  
Feasibility Analysis ◽  
Model Parameters ◽  
Strain Rates ◽  
Split Hopkinson

Feasibility analysis of replacing split Hopkinson bars test by Charpy impact test for determination of Johnson-Cook’s material model parameters. The results show that the Charpy impact test may, due to the strain rates achieved, successfully replace the mentioned experimental test. Moreover the results shows that some further studies should be conducted to improve efficiency of the proposed method.

Determination of Failure Causes of a Steam Turbine Casing

2011 ◽  
Vol 183 ◽  
pp. 37-42 ◽  
Author(s):  
Janusz Cwiek ◽  
Jerzy Łabanowski ◽  
Santina Topolska ◽  
Maria Sozańska
Keyword(s):  
Steam Turbine ◽  
Impact Test ◽  
Cast Steel ◽  
Charpy Impact ◽  
Hardness Test ◽  
Charpy Impact Test ◽  
Outer Shell ◽  
Turbine Casing ◽  
Vickers Hardness Test

The paper presents results of research and failure analysis undertaken to determine failure causes of a steam turbine casing. After 130,000 hours of service the crack in a outer shell of the turbine casing was found. The inner shell of the casing was made of cast steel grade G21CrMoV5-7, and the outer shell of grade G20CrMo4-5. Following research were performed in order to determine causes of the casing failure: chemical analysis; microstructure examinations with the use of light microscope, scanning electron microscope (SEM); mechanical properties examinations using the Charpy impact test, and Vickers hardness test; fracture mode evaluation with SEM.

Determination of the limit of forced elasticity in the charpy impact test

1987 ◽  
Vol 29 (9) ◽  
pp. 2205-2207
Author(s):  
G.V. Kozlov ◽  
R.A. Shetov ◽  
A.K. Mikitayev
Keyword(s):  
Impact Test ◽  
Charpy Impact ◽  
Charpy Impact Test

Influence of Honeycomb Core Compression on the Mechanical Properties of the Sandwich Structure

2013 ◽  
Vol 486 ◽  
pp. 283-288
Author(s):  
Ladislav Fojtl ◽  
Soňa Rusnáková ◽  
Milan Žaludek
Keyword(s):  
Mechanical Properties ◽  
Impact Test ◽  
Charpy Impact ◽  
Charpy Impact Test ◽  
Low Velocity Impact ◽  
Bending Test ◽  
Honeycomb Core ◽  
Low Velocity ◽  
Three Point Bending ◽  
Core Technology

This research paper deals with an investigation of the influence of honeycomb core compression on the mechanical properties of sandwich structures. These structures consist of prepreg facing layers and two different material types of honeycomb and are produced by modified compression molding called Crush-Core technology. Produced structures are mechanically tested in three-point bending test and subjected to low-velocity impact and Charpy impact test.

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