Crystal plasticity analysis of fatigue-creep behavior at cooling holes in single crystal Nickel based gas turbine blade components

C Skamniotis, N Grilli, ACF Cocks - International Journal of Plasticity, 2023 - Elsevier
We build a crystal plasticity finite element framework to investigate slip localisation and
fatigue-creep behaviour at the cooling holes of single crystal Nickel (Ni) based components …

Multiscale analysis of thermomechanical stresses in double wall transpiration cooling systems for gas turbine blades

C Skamniotis, M Courtis, ACF Cocks - International Journal of Mechanical …, 2021 - Elsevier
Double wall transpiration cooling (DWTC) is a new technology that allows the gas turbine
inlet temperatures to be increased beyond current levels to promote higher engine …

Physics-based probabilistic assessment of creep-fatigue failure for pressurized components

X Wang, J Yang, H Chen, F Xuan - International Journal of Mechanical …, 2023 - Elsevier
To achieve a high-reliability design of high-temperature structures with a feasible balance
between accuracy and efficiency, the physics-based probabilistic assessment for creep …

Designing against severe stresses at compound cooling holes of double wall transpiration cooled engine components

C Skamniotis, ACF Cocks - Aerospace Science and Technology, 2021 - Elsevier
Advanced thermal protection technology is key for allowing hotter gas turbine cycle
temperatures towards minimising fuel consumption and emissions. While effusion holes are …

[HTML][HTML] Thermal and centrifugal stresses in curved double wall transpiration cooled components with temperature dependent thermoelastic properties

C Skamniotis, ACF Cocks - International Journal of Solids and Structures, 2022 - Elsevier
The integration of double wall transpiration cooling (DWTC) into gas turbines and
hypersonic vehicles is key for addressing future needs in aerospace and power generation …

Creep-plasticity-fatigue calculations in the design of porous double layers for new transpiration cooling systems

C Skamniotis, ACF Cocks - International Journal of Fatigue, 2021 - Elsevier
New porous double layer (PDL) transpiration cooling technologies can allow gas turbine
entry temperatures to be increased beyond current limits towards higher engine efficiency …

Shakedown analysis and assessment method of four-stress parameters Bree-type problems

H Bao, J Shen, Y Liu, H Chen - International Journal of Mechanical …, 2022 - Elsevier
For pressure equipment in the industrial field, the shakedown design methods presented in
the ASME and other international design codes are mainly based on the Bree problem. The …

Ratchetting and creep failure in twin-wall turbine blades experiencing severe thermal and centrifugal loading

C Skamniotis, ACF Cocks - Journal of Applied …, 2022 - asmedigitalcollection.asme.org
Twin-wall structures can be cooled both externally and internally, raising great potential for
use in high-temperature applications. However, their increased geometric complexity …

[HTML][HTML] Analytical shakedown, ratchetting and creep solutions for idealized twin-wall blade components subjected to cyclic thermal and centrifugal loading

C Skamniotis, ACF Cocks - European Journal of Mechanics-A/Solids, 2022 - Elsevier
Double-wall transpiration cooling systems offer the potential for performance improvements
over conventional single wall systems in aerospace applications. Here we idealise the …

Ratcheting response and boundary of austenitic stainless steel in a pressurized straight pipe subjected to in-plane bending cycles

Y Tian, X Chen, T Chen, L Zhu… - International Journal of …, 2023 - Elsevier
Ratcheting behavior of pressurized straight pipes made of Z2CND18. 10 austenitic stainless
steel alloy was evaluated under in-plane bending cycles and under displacement-and force …