Journal publications

• Qvale, Paul; Nordhagen, Håkon Ottar; Ås, Sigmund Kyrre; Skallerud, Bjørn Helge. (2022) Effect of long periods of corrosion on the fatigue lifetime of offshore mooring chain steel. Marine Structures. vol. 85.
• Qvale, Paul; P. Zarandi, Ershad; Arredondo, Alberto; Ås, Sigmund Kyrre; Skallerud, Bjørn Helge. (2022) Effect of cyclic softening and mean stress relaxation on fatigue crack initiation in a hemispherical notch. Fatigue & Fracture of Engineering Materials & Structures (FFEMS).
• Qvale, Paul; P. Zarandi, Ershad; Ås, Sigmund Kyrre; Skallerud, Bjørn Helge. (2021) Digital image correlation for continuous mapping of fatigue crack initiation sites on corroded surface from offshore mooring chain. International Journal of Fatigue. vol. 151.
• Savio, Luca; Sileo, Lucia; Ås, Sigmund Kyrre. (2020) A comparison of physical and numerical modeling of homogenous isotropic propeller blades. Journal of Marine Science and Engineering. vol. 8 (1).
• Hallberg, Håkan; Ås, Sigmund Kyrre; Skallerud, Bjørn Helge. (2018) Crystal plasticity modeling of microstructure influence on fatigue crack initiation in extruded Al6082-T6 with surface irregularities. International Journal of Fatigue. vol. 111.
• Skallerud, Bjørn Helge; Ås, Sigmund Kyrre; Ottosen, Niels S.. (2018) A gradient-based multiaxial criterion for fatigue crack initiation prediction in components with surface roughness. International Journal of Fatigue. vol. 117.
• S. Azar, Amin; Ås, Sigmund Kyrre; Akselsen, Odd Magne. (2012) Analytical Modeling of Weld Bead Shape in Dry Hyperbaric GMAW Using Ar-He Chamber Gas Mixtures. Journal of materials engineering and performance (Print). vol. 22 (3).
• Shahrestani Azar, Amin; Ås, Sigmund Kyrre; Akselsen, Odd Magne. (2012) Determination of Welding Heat Source Parameters Using the Actual Bead Shape. Computational Materials Science. vol. 54.
• Ås, Sigmund Kyrre; Fjeldstad, Arne. (2009) Fatigue Assessment of Aluminum Rectangular Hollow Section T-joints by Hot-Spot Stress Approach. ISOPE - International Offshore and Polar Engineering Conference. Proceedings.
• Tveiten, Bård Wathne; Ås, Sigmund Kyrre; Fjeldstad, Arne. (2009) Fatigue Assessment of Aluminum Rectangular Hollow Section T-joints by Hot-Spot Stress Approach. ISOPE - International Offshore and Polar Engineering Conference. Proceedings.
• Ås, Sigmund Kyrre; Skallerud, Bjørn Helge; Tveiten, Bård Wathne. (2008) Surface roughness characterization for fatigue life predictions using finite element analysis. International Journal of Fatigue. vol. 30 (12).
• Ås, Sigmund; Skallerud, Bjørn Helge; Tveiten, Bård; Holme, Børge. (2005) Fatigue life prediction of machined components using finite element analysis of surface topography. International Journal of Fatigue. vol. 27.

Books

• Ås, Sigmund Kyrre. (2006) Fatigue Life Prediction of an Aluminium Alloy Automotive Component Using Finite Element Analysis of Surface Topography. 2006. ISBN 8247177900. Doktoravhandlinger ved NTNU (2006:25).

Part of book/report

• Garbatov, Y.; Ås, Sigmund Kyrre; Branner, K.; Choi, B.K.; Den Besten, J.H.; Dong, P.; Lillemäe, I.; Lindstrom, P.; Lourenco de Souza, M.; Parmentier, G.; Quéméner, Y.; Rizzo, C.M.; Rörup, J.; Vhanmane, S; Villavicencio, R; Wang, F; Yue, J.. (2018) Committee III.2: Fatigue and Fracture. Ebook: Proceedings of the 20th International Ship and Offshore Structures Congress (ISSC 2018) - Volume I.
• Akselsen, Odd Magne; Ren, Xiaobo; Ås, Sigmund Kyrre. (2014) Review of Laser and Hybrid Laser-Arc Welding. Proceedings of the Twenty-fourth (2014) International Offshore and Polar Engineering Conference, Busan, Korea.
• Ås, Sigmund Kyrre; Fjær, Hallvard Gustav; Olden, Vigdis; Lindholm, Dag; Akselsen, Odd Magne. (2014) Simulation of multipass welding of a steel pipe including modelling of hydrogen diffusion and fracture mechanics assessment. Mathematical Modelling of Weld Phenomena 10.
• Ren, Xiaobo; Akselsen, Odd Magne; Ås, Sigmund Kyrre; Kaplan, Alexander. (2013) Residual stresses of hybrid laser-arc welding for arctic application. The 14th Nordic Laser Materials Processing Conference.
• Ren, Xiaobo; Akselsen, Odd Magne; Ås, Sigmund Kyrre; Nyhus, Bård. (2012) Numerical analysis of residual stresses in hyperbaric welding. Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE2012 Volume 6.
• Ren, Xiaobo; Ås, Sigmund Kyrre; Akselsen, Odd Magne; Nyhus, Bård. (2012) Residual Stresses of X80 Pipe Girth Weld. Proceedings of the Twenty-second (2012) International Offshore and Polar Engineering Conference.
• Ren, Xiaobo; Akselsen, Odd Magne; Ås, Sigmund Kyrre; Nyhus, Bård. (2011) NUMERICAL SIMULATION OF HYBRID LASER-ARC WELDING OF X70 PIPELINE STEEL. The 13th conference on laser materials processing in the Nordic countries.