scholarly journals Brittle Fracture Modeling for Steel Structures operated in the Extreme

2017 ◽  
Vol 5 ◽  
pp. 777-784 ◽  
Author(s):  
Valeriy Lepov ◽  
Albert Grigoriev ◽  
Mbelle Samuel Bisong ◽  
Kyunna Lepova
Keyword(s):  
Brittle Fracture ◽  
Steel Structures ◽  
Fracture Modeling

09.12: Assessment of old mild steel structures related to brittle fracture

ce/papers ◽  
2017 ◽  
Vol 1 (2-3) ◽  
pp. 2451-2460
Author(s):  
Lars Sieber ◽  
Richard Stroetmann
Keyword(s):  
Brittle Fracture ◽  
Mild Steel ◽  
Steel Structures

scholarly journals The Effect of Notch Depth on CTOD Values in Fracture Tests of Structural Steel Elements

2018 ◽  
Vol 25 (2) ◽  
pp. 85-91
Author(s):  
Jakub Kowalski ◽  
Janusz Kozak
Keyword(s):  
Brittle Fracture ◽  
Test Procedure ◽  
Charpy Impact ◽  
Steel Structures ◽  
Charpy Impact Test ◽  
Offshore Structures ◽  
The Arctic ◽  
Notch Depth ◽  
Crack Tip Opening Displacement ◽  
Opening Displacement

Abstract In elements of steel structures working at low temperatures, there is a risk of appearance of brittle fracture. This risk is reduced through the use of certified materials having guaranteed strength at a given temperature. A method which is most frequently used to determine brittle fracture toughness is the Charpy impact test, preformed for a given temperature. For offshore structures intended to work in the arctic climate, the certifying institutions more and more often require Crack Tip Opening Displacement (CTOD) tests instead of conventional impact tests, especially for steel and welded joints of more than 40 mm in thickness in the case of high-strength steel, and more than 50 mm for the remaining steels. The geometry of specimens and the test procedure are standardised; however, these standards provide some margin for specimen notch depth. The paper analyses the effect of notch depth difference, within the range permitted by the standards, on the recorded CTOD values of a given material. The analysis was performed via numerical modelling of destruction of specimens with different notch geometries and further verification of the obtained numerical results in laboratory tests. The calculations were carried out at the Academic Computer Centre in Gdansk.

scholarly journals Study on Fracture Modeling to Predict Brittle Fracture Resistance under Mixed Mode Loading

2018 ◽  
Vol 36 (4) ◽  
pp. 274-284
Author(s):  
Kazuma SHIMIZU ◽  
Hiroto SHOJI ◽  
Taichiro KATO ◽  
Hiroyasu TANIGAWA ◽  
Mitsuru OHATA
Keyword(s):  
Brittle Fracture ◽  
Fracture Resistance ◽  
Mixed Mode ◽  
Mixed Mode Loading ◽  
Brittle Fracture Resistance ◽  
Fracture Modeling
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