The Value of Dynamic Fracture Toughness and Its Dependence on Material Properties and Loading Conditions

1981 ◽  
Author(s):  
George Herrmann
Keyword(s):  
Fracture Toughness ◽  
Dynamic Fracture ◽  
Material Properties ◽  
Dynamic Fracture Toughness ◽  
Loading Conditions

scholarly journals Dynamic Fracture Toughness of Magnesium Alloy under Impact Loading Conditions

2013 ◽  
Vol 53 ◽  
pp. 639-644 ◽  
Author(s):  
Mohd Ahadlin Mohd Daud ◽  
Nurulhilmi Zaedah Nasir ◽  
Ahmad Rivai ◽  
Mohd Zulkefli Selamat
Keyword(s):  
Fracture Toughness ◽  
Magnesium Alloy ◽  
Dynamic Fracture ◽  
Impact Loading ◽  
Dynamic Fracture Toughness ◽  
Loading Conditions

An Evaluation of Analysis Methodologies for Predicting Cleavage Arrest of a Deep Crack in an RPV Subjected to PTS Loading Conditions

1994 ◽  
Vol 116 (2) ◽  
pp. 128-135
Author(s):  
J. A. Keeney ◽  
B. R. Bass
Keyword(s):  
Fracture Toughness ◽  
Finite Element ◽  
Finite Element Model ◽  
Dynamic Fracture ◽  
Element Model ◽  
Dynamic Fracture Toughness ◽  
Loading Conditions ◽  
Dynamic Finite Element ◽  
Static Models ◽  
Deep Crack

Several calculational procedures are compared for predicting cleavage arrest of a deep crack in the wall of a prototypical reactor pressure vessel (RPV) subjected to pressurized-thermal-shock (PTS) types of loading conditions. Three procedures examined in this study utilized the following models: 1) a static finite-element model (full bending); 2) a radially constrained static model; and 3) a thermo-elastic dynamic finite-element model. A PTS transient loading condition was selected that produced a deep arrest of an axially oriented initially shallow crack according to calculational results obtained from the static (full-bending) model. Results from the static models were compared with those generated from detailed thermoelastic dynamic finite-element analysis. The dynamic analyses modeled cleavage-crack propagation using a node-release technique and an application-mode methodology based on dynamic fracture toughness curves generated from measured data. Comparisons presented here indicate that the degree to which the dynamic solutions can be approximated by the static models is highly dependent on several factors, including the material dynamic fracture curves and the propensity for cleavage reinitiation of the arrested crack under PTS loading conditions. Additional work is required to develop and validate a satisfactory dynamic fracture toughness model applicable to post cleavage arrest conditions in an RPV.

Dynamic fracture toughness (JId) behavior of armor-grade Q&T steel weldments: Effect of weld metal composition and microstructure

2009 ◽  
Vol 15 (6) ◽  
pp. 1017-1026 ◽  
Author(s):  
Govindaraj Magudeeswaran ◽  
Visvalingam Balasubramanian ◽  
S. Sathyanarayanan ◽  
Gankidi Madhusudhan Reddy ◽  
A. Moitra ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Weld Metal ◽  
Dynamic Fracture ◽  
Dynamic Fracture Toughness ◽  
Metal Composition ◽  
Weld Metal Composition

Investigation of loading rate and plate thickness effects in dynamic fracture toughness of PMMA

1997 ◽  
Vol 57 (4) ◽  
pp. 459-460
Author(s):  
H. Wada ◽  
M. Seika ◽  
T.C. Kennedy ◽  
C.A. Calder ◽  
K. Murase
Keyword(s):  
Fracture Toughness ◽  
Dynamic Fracture ◽  
Loading Rate ◽  
Plate Thickness ◽  
Dynamic Fracture Toughness
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