Effect of plastic deformation and H2S on dynamic fracture toughness of high strength casing steel

2015 ◽  
Vol 30 (2) ◽  
pp. 397-403 ◽  
Author(s):  
Dezhi Zeng ◽  
Naiyan Zhang ◽  
Gang Tian ◽  
Junying Hu ◽  
Zhi Zhang ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Plastic Deformation ◽  
Dynamic Fracture ◽  
High Strength ◽  
Dynamic Fracture Toughness

Dynamic Fracture Toughness of High-Strength 5KhN3МА Steel

2021 ◽  
Vol 2021 (9) ◽  
pp. 1051-1059
Author(s):  
L. R. Botvina ◽  
M. R. Tyutin ◽  
Yu. S. Perminova ◽  
A. V. Utkin
Keyword(s):  
Fracture Toughness ◽  
Dynamic Fracture ◽  
High Strength ◽  
Dynamic Fracture Toughness

Dynamic fracture toughness of a high strength armor steel

2009 ◽  
Vol 16 (8) ◽  
pp. 2567-2575 ◽  
Author(s):  
F. Gálvez ◽  
D. Cendón ◽  
N. García ◽  
A. Enfedaque ◽  
V. Sánchez-Gálvez
Keyword(s):  
Fracture Toughness ◽  
Dynamic Fracture ◽  
High Strength ◽  
Dynamic Fracture Toughness ◽  
Armor Steel

scholarly journals Influence of Welding on Dynamic Fracture Toughness of Strenx 700MC Steel

Metals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 494 ◽  
Author(s):  
Eva Schmidová ◽  
Fatih Bozkurt ◽  
Bohumil Culek ◽  
Sunil Kumar ◽  
Lenka Kuchariková ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Dynamic Fracture ◽  
Fracture Behavior ◽  
Microstructural Analysis ◽  
High Strength Steels ◽  
High Strength ◽  
Degradation Process ◽  
Structural Heterogeneity ◽  
Dynamic Fracture Toughness ◽  
Specific Fracture

Thermomechanically processed high-strength steels feature specific fracture behavior. One of the decisive criteria for their application is their stability against internal defects during impact loads, especially in connection with the welding. The work is focused on experimental analyses of the influence of welding on static and dynamic fracture toughness of Strenx 700MC steel. The fracture toughness was determined using the circumferentially notched round bar specimens during static loads and two dynamic load levels. To achieve a homogeneous zone for the requirements of fracture toughness tests, simulation of the welding influence was performed. Fractographic and metallographic analyses described a specific fracture behavior controlled by the internal structural heterogeneity. A limiting degradation process due to welding was identified by the microstructural analysis.

scholarly journals Mechanical behavior of patched steel panels at elevated temperatures

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
S Surendran ◽  
G L Manjunath ◽  
S K Lee
Keyword(s):  
Fracture Toughness ◽  
Dynamic Fracture ◽  
High Strength Steel ◽  
High Strength ◽  
Dynamic Fracture Toughness ◽  
Fiber Reinforced ◽  
Fiber Reinforced Plastic ◽  
Reinforced Plastic ◽  
Steel Panels ◽  
The Impact

Preventive maintenance is an accepted practice in engineering to keep the structural reliability of ship hulls at the highest possible level. Designers ensure a longer period in between the consecutive maintenance of ship hull parts to optimize expenditure. This is relevant in view of the difficulty in reaching farthest corners in ballast tanks, fuel storage tanks, cofferdams etc. Prior maintenance of the deck and hull parts save a considerable amount of the owner’s budget.A portable technology like patching becomes more handy and economic. Performance of both unpatched and patched samples during dynamic loading conditions being examined in the present investigation. The high strength steel panels with a dimension of 70mm×15mm×3mm were edge cracked for lengths of 4mm and 7mm, with width of 1mm for both. The edge cracked high strength steel panels are repaired with composite patches using GFRP (glass fiber reinforced plastic), CFRP (carbon fiber reinforced plastic) and AFRP (aramid fiber reinforced plastic). The patching was done by 3 and 5 layered and impact tested by Charpy impact tester at ranges of high temperatures. The amount of energy absorbed in the impact is converted to dynamic fracture toughness values and compared for evaluating the performance of FRP (fiber reinforced plastics). Finite element analysis was done for evaluating the stress intensity factors at different types of patching and testing conditions. Comparatively the AFRP patched samples showed better dynamic fracture toughness values at different temperatures.

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