Article
Engineering, Manufacturing
M-N Avettand-Fenoel, T. Sapanathan, T. Pirling, G. Racineux, A. Simar, J-M Drezet
Summary: Residual stresses in a dissimilar AA1050-DP450 steel magnetic pulse weld were investigated using neutron diffraction for the first time. Tensile residual stresses were observed in the Al sheet and compressive residual stresses in the steel sheet, with different distributions at the joint interface. The asymmetrical shape of the rectangular joint line resulted in lower magnitude of residual stresses along the short side of the weld.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Engineering, Civil
Mehran Ghafouri, Antti Ahola, Joseph Ahn, Timo Bjork
Summary: This study investigates the influence of welding sequences and external constraints on angular distortion and residual stresses in short fillet welds made of high strength steel. The findings show that external constraint has a larger impact than welding sequence on the development of angular distortion and peak residual stresses. Furthermore, the results demonstrate that short fillet welds have larger peak magnitudes of localized transverse residual stress fields compared to continuous fillet welds. The stiffness of external constraint has a greater influence on preventing angular distortion in continuous fillet welds than in short fillet welds.
ENGINEERING STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Shirley Alexandra Garcia Ruano, Auteliano Antunes Dos Santos Junior
Summary: This study characterizes the behavior of friction stir welding on 7050-T7451 aluminum alloy and proposes a manufacturing quality index based on the magnitude and distribution of residual stresses. The research finds that higher traverse and rotational speeds result in higher residual stresses.
MATERIALS & DESIGN
(2022)
Article
Nanoscience & Nanotechnology
Madhumanti Bhattacharyya, Thomas Gnaupel-Herold, S. Krishnan Raja, Jens Darsell, Saumyadeep Jana, Indrajit Charit
Summary: Friction stir welding was used to repair simulated cracks on 304L SS plates created by electrical discharge machining. Two different tool temperatures resulted in varying residual stress fields, with differences in peak stress observed at different depths of the welds. The 725 degrees C weld exhibited higher peak stress compared to the 825 degrees C weld due to a lack of stress relief at the lower temperature.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Mechanical
Omar S. Salih, Hengan Ou, Wei Sun
Summary: This study developed a novel three-dimensional fully coupled thermo-mechanical finite element model based on the Coupled Eulerian-Lagrangian approach to simulate the friction stir welding (FSW) process. The model successfully captured the evolution of temperature, plastic deformation, and residual stresses and was validated with experimental testing. The results revealed that the tool rotation speed significantly influenced temperature evolution and plastic deformation, with higher plastic deformation resulting in improved weld quality.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
X. X. Zhang, H. Andrae, S. Harjo, W. Gong, T. Kawasaki, A. Lutz, M. Lahres
Summary: In-situ neutron diffraction was used to investigate the residual strains, stresses, and dislocation density in LPBF AlSi10Mg during loading-unloading-reloading deformation. The study revealed that the AlSi10Mg alloy exhibits notable dislocation annihilation phenomenon in the Al matrix during unloading stages, driven by compressive residual stresses.
MATERIALS & DESIGN
(2021)
Article
Engineering, Mechanical
Le Wang, Xudong Qian
Summary: This paper presents experimental and numerical investigations on the welding residual stresses and their relaxation in butt-welded plates under fatigue actions. The experimental findings show that the relaxation of residual stresses occurs predominantly in the first loading cycle, and the amount of relaxation depends on the plastic deformation and the maximum load of the cyclic loads.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Multidisciplinary
Foroogh Hosseinzadeh, Behrooz Tafazzoli-Moghaddam, Ho Kyeom Kim, Peter John Bouchard, Vasileios Akrivos, Anastasia N. Vasileiou, Mike Smith
Summary: This paper presents the characterization of residual stress in two thin-walled austenitic girth welded pipes using two independent measurement techniques, the contour method and neutron diffraction. The results obtained from these techniques are compared and the specific characteristics of residual stress distribution are discussed.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2023)
Article
Engineering, Manufacturing
Bryan Lim, Keita Nomoto, Amy J. Clarke, Sudarsanam Suresh Babu, Sophie Primig, Xiaozhou Liao, Andrew J. Breen, Simon P. Ringer
Summary: Complex geometries and topology optimisations are driving the additive manufacturing of Ni-based superalloys, but there are thermal signature differences in complex components compared to commonly studied test coupons, leading to unaccounted microstructure-property variations. The effects of topological changes, such as engineered internal voids, on the mechanical performance of as-fabricated Haynes 282 monolith are investigated, revealing the influence of changing thermal conditions on the local mechanical property response.
ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Marine
M. Hashemzadeh, Y. Garbatov, C. Guedes Soares
Summary: This study investigates the welding-induced residual stresses and distortions of butt-welded non-corroded and corroded steel plates, taking into account environmental conditions and material properties. The importance of considering steel ageing in the repair process is highlighted, and the developed methodology allows for critical operational decisions to be made with greater ease and confidence. Different welding sequence scenarios can also be analysed to minimize repair costs in repairing ageing structures.
Article
Materials Science, Multidisciplinary
M. Weltevreden, H. Coules, I. Hadley, Y. J. Janin
Summary: Residual stresses from welding affect fracture mechanisms of cracks and flaws around welds. Excessive residual stress can lead to unexpected failures and is an important factor in fitness-for-service calculations. In this study, a statistical analysis of an experimental database on the residual stress of low heat input austenitic girth welds is conducted, revealing a moderate influence of dimension ratio on residual stress in piping components.
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
(2023)
Article
Engineering, Manufacturing
Pradeeptta Kumar Taraphdar, Manas Mohan Mahapatra, Arun Kumar Pradhan, Pavan Kumar Singh, Kamal Sharma, Suranjit Kumar
Summary: This study investigated the effects of various factors on the through-thickness residual stress distribution in multipass pressure vessel steel welds through experiments and numerical simulations, focusing on the influence of welding thermal history on microstructure and hardness.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2021)
Article
Automation & Control Systems
Sachin Bhardwaj, R. M. Chandima Ratnayake, Efthymios Polatidis, Jan Capek
Summary: This study investigated the residual stresses on girth welds fabricated at proximity using neutron diffraction. The findings revealed that the residual axial stresses at a 5-mm proximity distance were greater than the yield strength of the structural steel, grade S355. These findings provide technical justification for minimizing residual stresses and developing welding procedures for welds fabricated at proximity.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Keyou S. Mao, Aaron J. French, Xiang Liu, Yaqiao Wu, Lucille A. Giannuzzi, Cheng Sun, Megha Dubey, Paula D. Freyer, Jonathan K. Tatman, Frank A. Garner, Lin Shao, Janelle P. Wharry
Summary: This study investigates the integrity of laser welds on neutron irradiated, He-containing steels. Laser welding nearly eliminates all irradiation-induced cavities and suppresses He-induced cracking. Laser welding induces Cr-rich precipitation and suppresses grain boundary radiation-induced segregation.
MATERIALS & DESIGN
(2021)
Article
Engineering, Manufacturing
Houman Alipooramirabad, Anna Paradowska, Mark Reid, Reza Ghomashchi
Summary: This study used in-situ neutron diffraction to investigate the effects of holding time on the relaxation of residual strains during Post-Weld Heat Treatment (PWHT) for multi-pass High-Strength Low-Alloy (HSLA) steel welds. The findings suggest that holding time has little influence on strain relaxations, while creep may be the primary cause of stress relaxation during PWHT.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Engineering, Industrial
Quan Lai, Ralph Abrahams, Wenyi Yan, Cong Qiu, Peter Mutton, Anna Paradowska, Mehdi Soodi, Xinhua Wu
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2019)
Article
Instruments & Instrumentation
A. S. Tremsin, A. V. Sokolova, F. Salvemini, V. Luzin, A. Paradowska, O. Muransky, H. J. Kirkwood, B. Abbey, C. M. Wensrich, E. H. Kisi
REVIEW OF SCIENTIFIC INSTRUMENTS
(2019)
Article
Mechanics
H. J. Kirkwood, C. M. Wensrich, M. Paradowska, B. Abbey
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2019)
Article
Materials Science, Multidisciplinary
P. E. Aba-Perea, P. J. Withers, T. Pirling, A. Paradowska, D. Ma, M. Preuss
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2019)
Article
Engineering, Mechanical
Taposh Roy, Ralph Abrahams, Anna Paradowska, Quan Lai, Peter Mutton, Mehdi Soodi, Panahsadat Fasihi, Wenyi Yan
Article
Construction & Building Technology
Tuan Le, Anna Paradowska, Mark A. Bradford, Xinpei Liu, Hamid R. Valipour
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2020)
Article
Engineering, Mechanical
Shi D. Sun, Daniel Fabijanic, Murugesan Annasamy, Santiago Corujeira Gallo, Ian Fordyce, Anna Paradowska, Martin Leary, Mark Easton, Milan Brandt
Article
Construction & Building Technology
Dongxu Li, Anna Paradowska, Brian Uy, Jia Wang, Mahbub Khan
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2020)
Article
Engineering, Industrial
Taposh Roy, Anna Paradowska, Ralph Abrahams, Michael Law, Peter Mutton, Mehdi Soodi, Wenyi Yan
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2020)
Article
Chemistry, Physical
Houman Alipooramirabad, Anna Paradowska, Shahrooz Nafisi, Mark Reid, Reza Ghomashchi
Article
Materials Science, Multidisciplinary
Anna Ermakova, Nima Razavi, Sandra Cabeza, Elzbieta Gadalinska, Mark Reid, Anna Paradowska, Supriyo Ganguly, Filippo Berto, Ali Mehmanparast
Summary: This study investigates the possibility of enhancing the fatigue life of low carbon steel components built through Wire Arc Additive Manufacturing (WAAM) by applying rolling and laser shock peening surface treatment techniques. Fatigue crack propagation tests were conducted on both surface treated and untreated specimens to analyze and compare their performance. The effects of specimen orientation, extraction location, and residual stresses on the fatigue behavior of WAAM built components were discussed. Texture analysis was also performed to provide insights into the advantages and disadvantages of different surface treatment techniques.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Mechanics
Yiping Wu, Chung Lun Pun, Pu Huang, Darrien Welsby, Peter Mutton, Anna Paradowska, Wenyi Yan
Summary: In heavy-haul railway systems, the high traction force in curved tracks accelerates rolling contact fatigue crack growth. However, there is limited research on the influence of creepage on this crack growth behavior. This paper proposes a numerical method to investigate non-proportional mixed-mode crack growth in the presence of severe creepage. Results show that lateral and spin creepages significantly affect the phase and magnitude of stress intensity factors, with spin creepage having a more detrimental effect.
ENGINEERING FRACTURE MECHANICS
(2023)
Proceedings Paper
Engineering, Manufacturing
Kai Siang Chin, Sridhar Idapalapati, Anna Paradowska, Mark Reid, Shashwat Shukla, Dennise Tanoko Ardi
ADVANCED SURFACE ENHANCEMENT, INCASE 2019
(2020)
Article
Imaging Science & Photographic Technology
Anton S. Tremsin, Winfried Kockelmann, Joe F. Kelleher, Anna M. Paradowska, Ranggi S. Ramadhan, Michael E. Fitzpatrick
JOURNAL OF IMAGING
(2018)
Proceedings Paper
Engineering, Civil
Taposh Roy, Ralph Abrahams, Quan Lai, Peter Mutton, Mehdi Soodi, Anna Paradowska, Wenyi Yan
RAILWAY DEVELOPMENT, OPERATIONS, AND MAINTENANCE: PROCEEDINGS OF THE FIRST INTERNATIONAL CONFERENCE ON RAIL TRANSPORTATION 2017 (ICRT 2017)
(2018)
