[1] [1] ASTM. 2009.Committee F42 on Additive Manufacturing Technologies. (ASTM, West Conshohocken, PA, USA).

[2] [2] Treutler K and Wesling V. 2021. The current state of research of wire arc additive manufacturing (WAAM): a review.Appl. Sci.11, 8619.

[3] [3] Li Y, Su C and Zhu J J. 2022. Comprehensive review of wire arc additive manufacturing: hardware system, physical process, monitoring, property characterization, application and future prospects.Results Eng.13, 100330.

[4] [4] Ngo T D, Kashani A, Imbalzano G, Nguyen K T Q and Hui D. 2018. Additive manufacturing (3D printing): a review of materials, methods, applications and challenges.Composites B143, 172–196.

[5] [5] Tan C L, Deng C, Li S, Abena A, Jamshidi P, Essa K, Wu L K, Xu G H, Attallah M M and Liu J. 2022. Mechanical property and biological behaviour of additive manufactured TiNi functionally graded lattice structure.Int. J. Extrem. Manuf.4, 045003.

[6] [6] Srikanth M, Mathew A T and Bhagchandani R K. 2024. Model performance evaluation of build time using geometric shape complexity and process parameters in material extrusion.Addit. Manuf.91, 104337.

[7] [7] Mattera G, Nele L and Paolella D. 2024. Monitoring and control the Wire Arc Additive Manufacturing process using artificial intelligence techniques: a review.J. Intell. Manuf.35, 467–497.

[8] [8] Dias M, Pragana J P M, Ferreira B, Ribeiro I and Silva C M A. 2022. Economic and environmental potential of wire-arc additive manufacturing.Sustainability14, 5197–5216.

[9] [9] Chen X, Kong F R, Fu Y H, Zhao X S, Li R S, Wang G L and Zhang H O. 2021. A review on wire-arc additive manufacturing: typical defects, detection approaches, and multisensor data fusion-based model.Int. J. Adv. Manuf. Technol.117, 707–727.

[10] [10] Chen X H, Li J, Cheng X, He B, Wang H M and Huang Z. 2017. Microstructure and mechanical properties of the austenitic stainless steel 316L fabricated by gas metal arc additive manufacturing.Mater. Sci. Eng. A703, 567–577.

[11] [11] Lan B, Wang Y P, Liu Y H, Hooper P, Hopper C, Zhang G D, Zhang X J and Jiang J. 2021. The influence of microstructural anisotropy on the hot deformation of wire arc additive manufactured (WAAM) Inconel 718.Mater. Sci. Eng. A823, 141733.

[12] [12] Bambach M, Sizova I, Sydow B, Hemes S and Meiners F. 2020. Hybrid manufacturing of components from Ti-6Al-4V by metal forming and wire-arc additive manufacturing.J. Mater. Process. Technol.282, 116689.

[13] [13] Zhu Z F, Hu Z H, Seet H L, Liu T T, Liao W H, Ramamurty U and Nai S M L. 2023. Recent progress on the additive manufacturing of aluminum alloys and aluminum matrix composites: microstructure, properties, and applications.Int. J. Mach. Tools Manuf.190, 104047.

[14] [14] Khne R, Feldmann M, Citarelli S, Reisgen U, Sharma R and Oster L. 2019. 3D printing in steel construction with the automated Wire Arc Additive Manufacturing.Ce/papers3, 577–583.

[15] [15] Le V T, Bui M C, Pham T Q D, Tran H S and Van Tran X. 2023. Efficient prediction of thermal history in wire and arc additive manufacturing combining machine learning and numerical simulation.Int. J. Adv. Manuf. Technol.126, 4651–4663.

[16] [16] Lin Z D, Song K J and Yu X H. 2021. A review on wire and arc additive manufacturing of titanium alloy.J. Manuf. Process.70, 24–45.

[17] [17] Rosli N A, Alkahari M R, Abdollah M F B, Maidin S, Ramli F R and Herawan S G. 2021. Review on effect of heat input for wire arc additive manufacturing process.J. Mater. Res. Technol.11, 2127–2145.

[18] [18] Srivastava M, Rathee S, Tiwari A and Dongre M. 2023. Wire arc additive manufacturing of metals: a review on processes, materials and their behaviour.Mater. Chem. Phys.294, 126988.

[19] [19] Zhao T et al. 2024. A comprehensive review of process planning and trajectory optimization in arc-based directed energy deposition.J. Manuf. Process.119, 235–254.

[20] [20] Xia C Y, Pan Z X, Polden J, Li H J, Xu Y L, Chen S B and Zhang Y M. 2020. A review on wire arc additive manufacturing: monitoring, control and a framework of automated system.J. Manuf. Syst.57, 31–45.

[21] [21] Tripathi U, Saini N, Mulik R S and Mahapatra M M. 2022. Effect of build direction on the microstructure evolution and their mechanical properties using GTAW based wire arc additive manufacturing.CIRP J. Manuf. Sci. Technol.37, 103–109.

[22] [22] Huang L, Chen X Z, Konovalov S, Su C C, Fan P F, Wang Y H, Xiaoming P and Panchenko I. 2023. A review of challenges for wire and arc additive manufacturing (WAAM).Trans. Indian Inst. Met.76, 1123–1139.

[23] [23] Sun Q S, Xue Z X, Chen Y, Xia R D, Wang J M, Xu S, Zhang J and Yue Y N. 2022. Modulation of the thermal transport of micro-structured materials from 3D printing.Int. J. Extrem. Manuf.4, 015001.

[24] [24] Denlinger E R, Heigel J C, Michaleris P and Palmer T A. 2015. Effect of inter-layer dwell time on distortion and residual stress in additive manufacturing of titanium and nickel alloys.J. Mater. Process. Technol.215, 123–131.

[25] [25] Zhu H H, Lu L and Fuh J Y H. 2006. Study on shrinkage behaviour of direct laser sintering metallic powder.Proc. Inst. Mech. Eng. B220, 183–190.

[26] [26] Bandyopadhyay A, Mitra I, Avila J D, Upadhyayula M and Bose S. 2023. Porous metal implants: processing, properties, and challenges.Int. J. Extrem. Manuf.5, 032014.

[27] [27] Sui S, Chew Y, Weng F, Tan C L, Du Z L A and Bi G J. 2022. Study of the intrinsic mechanisms of nickel additive for grain refinement and strength enhancement of laser aided additively manufactured Ti–6Al–4V.Int. J. Extrem. Manuf.4, 035102.

[28] [28] Chen W, Gu D D, Yang J K, Yang Q, Chen J and Shen X F. 2022. Compressive mechanical properties and shape memory effect of NiTi gradient lattice structures fabricated by laser powder bed fusion.Int. J. Extrem. Manuf.4, 045002.

[29] [29] Ding D H, Pan Z X, Cuiuri D and Li H J. 2015. A practical path planning methodology for wire and arc additive manufacturing of thin-walled structures.Robot. Comput. Integr. Manuf.34, 8–19.

[30] [30] Ding D H, Yuan L, Huang R, Jiang Y, Wang X W and Pan Z X. 2023. Corner path optimization strategy for wire arc additive manufacturing of gap-free shapes.J. Manuf. Process.85, 683–694.

[31] [31] Shao C W, Li H Y, Zhu Y K, Li P, Yu H Y, Zhang Z F, Gleiter H, Mc Donald A and Hogan J. 2023. Nano-additive manufacturing of multilevel strengthened aluminum matrix composites.Int. J. Extrem. Manuf.5, 015102.

[32] [32] Ding D H, Pan Z X, Cuiuri D and Li H J. 2014. A tool-path generation strategy for wire and arc additive manufacturing.Int. J. Adv. Manuf. Technol.73, 173–183.

[33] [33] Michel F, Lockett H, Ding J L, Martina F, Marinelli G and Williams S. 2019. A modular path planning solution for Wire + Arc Additive Manufacturing.Robot. Comput. Integr. Manuf.60, 1–11.

[34] [34] Liu H H, Zhao T, Li L Y, Liu W J, Wang T Q and Yue J F. 2020. A path planning and sharp corner correction strategy for wire and arc additive manufacturing of solid components with polygonal cross-sections.Int. J. Adv. Manuf. Technol.106, 4879–4889.

[35] [35] Ma G C, Zhao G, Li Z H and Xiao W L. 2019. A path planning method for robotic wire and arc additive manufacturing of thin-walled structures with varying thickness.IOP Conf. Ser.: Mater. Sci. Eng.470, 012018.

[36] [36] Li Z H, Hou Z M, Pan Z X, Wu D and Xu J. 2023. A nonautore-gressive dynamic model based welding parameter planning method for varying geometry beads in WAAM.IEEE Trans. Ind. Electron.70, 2770–2779.

[37] [37] Chen C R, He H, Zhou J X, Lian G F, Huang X and Feng M Y. 2022. A profile transformation based recursive multi-bead overlapping model for robotic wire and arc additive manufacturing (WAAM).J. Manuf. Process.84, 886–901.

[38] [38] Lam T F, Xiong Y, Dharmawan A G, Foong S and Soh G S. 2020. Adaptive process control implementation of wire arc additive manufacturing for thin-walled components with overhang features.Int. J. Adv. Manuf. Technol.108, 1061–1071.

[39] [39] Nguyen L, Buhl J and Bambach M. 2020. Continuous Eulerian tool path strategies for wire-arc additive manufacturing of rib-web structures with machine-learning-based adaptive void filling.Addit. Manuf.35, 101265.

[40] [40] Zhou Z Y, Shen H Y, Lin J H, Liu B and Sheng X J. 2022. Continuous tool-path planning for optimizing thermomechanical properties in wire-arc additive manufacturing: an evolutional method.J. Manuf. Process.83, 354–373.

[41] [41] Diourt A, Bugarin F, Bordreuil C and Segonds S. 2021. Continuous three-dimensional path planning (CTPP) for complex thin parts with wire arc additive manufacturing.Addit. Manuf.37, 101622.

[42] [42] Veiga F, Arizmendi M, Suarez A, Bilbao J and Uralde V. 2022. Different path strategies for directed energy deposition of crossing intersections from stainless steel SS316L-Si.J. Manuf. Process.84, 953–964.

[43] [43] He T Y, Yu S F, Shi Y S and Dai Y L. 2019. High-accuracy and high-performance WAAM propeller manufacture by cylindrical surface slicing method.Int. J. Adv. Manuf. Technol.105, 4773–4782.

[44] [44] Zhang C, Shen C, Hua X M, Li F, Zhang Y L and Zhu Y Y. 2020. Influence of wire-arc additive manufacturing path planning strategy on the residual stress status in one single buildup layer.Int. J. Adv. Manuf. Technol.111, 797–806.

[45] [45] Yuan L, Pan Z X, Polden J, Ding D H, van Duin S and Li H J. 2022. Integration of a multi-directional wire arc additive manufacturing system with an automated process planning algorithm.J. Ind. Inf. Integr.26, 100265.

[46] [46] Nguyen L, Buhl J and Bambach M. 2020. Multi-bead overlapping models for tool path generation in wire-arc additive manufacturing processes.Proc. Manuf.47, 1123–1128.

[47] [47] Mu H C, Polden J, Li Y X, He F Y, Xia C Y and Pan Z X. 2022. Layer-by-layer model-based adaptive control for wire arc additive manufacturing of thin-wall structures.J. Intell. Manuf.33, 1165–1180.

[48] [48] Qin J, Wang Y P, Ding J L and Williams S. 2022. Optimal droplet transfer mode maintenance for wire+arc additive manufacturing (WAAM) based on deep learning.J. Intell. Manuf.33, 2179–2191.

[49] [49] Lizarralde N, Coutinho F and Lizarralde F. 2022. Online coordinated motion control of a redundant robotic wire arc additive manufacturing system.IEEE Robot. Autom. Lett.7, 9675–9682.

[50] [50] Alomari Y, Birosz M T and And M. 2023. Part orientation optimization for Wire and Arc Additive Manufacturing process for convex and non-convex shapes.Sci. Rep.13, 2203.

[51] [51] Ruiz C, Bhatt P M, Gupta S K and Huang Q. 2023. Process-informed segmentation of dense point clouds for layer quality assessment in large-scale metal additive manufacturing.In Proc. 2023 IEEE 19th International Conference on Automation Science and Engineering. (IEEE, Auckland, New Zealand). pp 1–6.

[52] [52] Petrik J and Bambach M. 2023. Reinforcement learning and optimization based path planning for thin-walled structures in wire arc additive manufacturing.J. Manuf. Process.93, 75–89.

[53] [53] Hu Z Q, Hua L, Qin X P, Ni M, Liu Z M and Liang C M. 2022. Region-based path planning method with all horizontal welding position for robotic curved layer wire and arc additive manufacturing.Robot. Comput. Integr. Manuf.74, 102286.

[54] [54] Li N, Fan D, Huang J K, Yu S R, Yuan W and Han M M. 2021. Self-adaptive control system for additive manufacturing using double electrode micro plasma arc welding.Chin. J. Mech. Eng.34, 59.

[55] [55] Liu B, Shen H Y, Zhou Z Y, Jin J A and Fu J Z. 2021. Research on support-free WAAM based on surface/interior separation and surface segmentation.J. Mater. Process. Technol.297, 117240.

[56] [56] Shi J B, Li F, Chen S J and Zhao Y. 2019. T-GMAW based novel Multi-node trajectory planning for fabricating grid stiffened panels: an efficient production technology.J. Clean. Prod.238, 117919.

[57] [57] Giordano A, Diourt A, Bordreuil C, Bugarin F and Segonds S. 2022. Thermal scalar field for continuous three-dimensional toolpath strategy using wire arc additive manufacturing for free-form thin parts.Comput. Aided Des.151, 103337.

[58] [58] Zhao Y, Li F, Chen S J and Lu Z Y. 2019. Unit block–based process planning strategy of WAAM for complex shell–shaped component.Int. J. Adv. Manuf. Technol.104, 3915–3927.

[59] [59] Cui J Y, Yuan L, Commins P, He F Y, Wang J and Pan Z X. 2021. WAAM process for metal block structure parts based on mixed heat input.Int. J. Adv. Manuf. Technol.113, 503–521.

[60] [60] Wang X L, Wang A M and Li Y B. 2019. A sequential pathplanning methodology for wire and arc additive manufacturing based on a water-pouring rule.Int. J. Adv. Manuf. Technol.103, 3813–3830.

[61] [61] Radel S, Diourte A, Souli F, Company O and Bordreuil C. 2019. Skeleton arc additive manufacturing with closed loop control.Addit. Manuf.26, 106–116.

[62] [62] Ding D H, Shen C, Pan Z X, Cuiuri D, Li H J, Larkin N and van Duin S. 2016. Towards an automated robotic arc-welding-based additive manufacturing system from CAD to finished part.Comput. Aided Des.73, 66–75.

[63] [63] Yu Z P, Pan Z X, Ding D H, Polden J, He F Y, Yuan L and Li H J. 2021. A practical fabrication strategy for wire arc additive manufacturing of metallic parts with wire structures.Int. J. Adv. Manuf. Technol.115, 3197–3212.

[64] [64] Yang J and Wang A M. 2024. Surface flatness and height dimensional control of complex structural components with wire arc additive manufacturing.Weld. World69, 973–988.

[65] [65] Bourell D L, Leu M C and Rosen D W. 2009.Roadmap for Additive Manufacturing: Identifying the Future of Freeform Processing. (The University of Texas at Austin, Austin, Texas).

[66] [66] Marques D A, Oliveira J P and Baptista A C. 2023. A short review on the corrosion behaviour of wire and arc additive manufactured materials.Metals13, 641.

[67] [67] Wang L W, Wu T, Wang D L, Liang Z M, Yang X, Peng Z Z, Liu Y, Liang Y M, Zeng Z and Oliveira J P. 2023. A novel heterogeneous multi-wire indirect arc directed energy deposition for in-situ synthesis Al-Zn-Mg-Cu alloy: process, microstructure and mechanical properties.Addit. Manuf.72, 103639.

[68] [68] Wang C, Tan X P, Tor S B and Lim C S. 2020. Machine learning in additive manufacturing: state-of-the-art and perspectives.Addit. Manuf.36, 101538.

[69] [69] Yang D Q, Wang G and Zhang G J. 2017. Thermal analysis for single-pass multi-layer GMAW based additive manufacturing using infrared thermography.J. Mater. Process. Technol.244, 215–224.

[70] [70] Whip B, Sheridan L and Gockel J. 2019. The effect of primary processing parameters on surface roughness in laser powder bed additive manufacturing.Int. J. Adv. Manuf. Technol.103, 4411–4422.

[71] [71] Tang F S, Luo Y, Cai Y H, Yang S Q, Zhang F Y and Peng Y R. 2022. Arc length identification based on arc acoustic signals in GTA-WAAM process.Int. J. Adv. Manuf. Technol.118, 1553–1563.

[72] [72] Mattera G, Polden J and Norrish J. 2024. Monitoring the gas metal arc additive manufacturing process using unsupervised machine learning.Weld. World68, 2853–2867.

[73] [73] Zhang C, Gao M, Chen C and Zeng X Y. 2019. Spectral diagnosis of wire arc additive manufacturing of Al alloys.Addit. Manuf.30, 100869.

[74] [74] Chabot A, Laroche N, Carcreff E, Rauch M and Hascot J Y. 2020. Towards defect monitoring for metallic additive manufacturing components using phased array ultrasonic testing.J. Intell. Manuf.31, 1191–1201.

[75] [75] Li H, Gao F, Jiao J Y, Liu Z Y, Ji D C and Lin J. 2023. Acoustic emission-based cross-domain process health monitoring for additive manufacturing.IEEE Trans. Instrum. Meas.72, 3534408.

[76] [76] Wang Y M, Lu J, Zhao Z, Deng W X, Han J, Bai L F, Yang X W and Yao J Y. 2021. Active disturbance rejection control of layer width in wire arc additive manufacturing based on deep learning.J. Manuf. Process.67, 364–375.

[77] [77] Fang J Z, Wang Z D, Liu W B, Lauria S, Zeng N Y, Prieto C, Sikstrm F and Liu X H. 2024. A new particle swarm optimization algorithm for outlier detection: industrial data clustering in wire arc additive manufacturing.IEEE Trans. Autom. Sci. Eng.21, 1244–1257.

[78] [78] He X, Wang T Q, Wu K X and Liu H H. 2021. Automatic defects detection and classification of low carbon steel WAAM products using improved remanence/magneto-optical imaging and cost-sensitive convolutional neural network.Measurement173, 108633.

[79] [79] Wang Z Y, Zimmer-Chevret S, Lonard F and Abba G. 2022. Control of bead geometry using multiple model approach in wire-arc additive manufacturing (WAAM).Int. J. Adv. Manuf. Technol.122, 2939–2951.

[80] [80] Xiong J, Zhang Y Y and Pi Y P. 2021. Control of deposition height in WAAM using visual inspection of previous and current layers.J. Intell. Manuf.32, 2209–2217.

[81] [81] Taheri H, Dababneh F, Weaver G and Butsch B. 2022. Assessment of material property variations with resonant ultrasound spectroscopy (RUS) when using additive manufacturing to print over existing parts.J. Adv. Joining Process.5, 100117.

[82] [82] Vithanage R K W, Mohseni E, Lines D, Loukas C, Foster E, MacLeod C N, Pierce S G, Gachagan A, Ding J L and Williams S. 2022. Development of a phased array ultrasound roller probe for inspection of wire + arc additive manufactured components.J. Manuf. Process.80, 765–774.

[83] [83] Li W H, Zhang H O, Wang G L, Xiong G, Zhao M H, Li G K and Li R S. 2023. Deep learning based online metallic surface defect detection method for wire and arc additive manufacturing.Robot. Comput. Integr. Manuf.80, 102470.

[84] [84] Huang Y M, Hou S S, Yang L J, Tian G, Yong Z and Liu S Y. 2021. Effect of arc dynamic behavior on deposition quality of additive manufactured aluminum alloys.J. Mater. Process. Technol.295, 117172.

[85] [85] Ramalho A, Santos T G, Bevans B, Smoqi Z, Rao P and Oliveira J P. 2022. Effect of contaminations on the acoustic emissions during wire and arc additive manufacturing of 316L stainless steel.Addit. Manuf.51, 102585.

[86] [86] Reisch R, Hauser T, Lutz B, Pantano M, Kamps T and Knoll A. 2020. Distance-based multivariate anomaly detection in wire arc additive manufacturing.In Proc. 2020 19th IEEE International Conference on Machine Learning and Applications. (IEEE, Miami, FL, USA). pp 659–664.

[87] [87] Oyama K, Diplas S, M’hamdi M, Gunns A E and Azar A S. 2019. Heat source management in wire-arc additive manufacturing process for Al-Mg and Al-Si alloys.Addit. Manuf.26, 180–192.

[88] [88] Diao Z W, Yang F, Chen L, Wang R, Zhang Y, Sun J R, Wu Y F and Rong M Z. 2023. Effects of deposition height stability of CuCrZr alloy based on arc voltage sensing: influence of materials and energy saving on wire arc additive manufacturing.J. Clean. Prod.425, 138665.

[89] [89] Wang X, Zhou C, Luo M L, Liu L L and Liu F. 2022. Fused plus wire arc additive manufacturing materials and energy saving in variable-width thin-walled.J. Clean. Prod.373, 133765.

[90] [90] Cunha F G, Santos T G and Xavier J. 2022. In situ monitoring of wire and arc additive manufacturing by digital image correlation: a case study.Proc. Struct. Integr.37, 33–40.

[91] [91] Zimermann R, Mohseni E, Vithanage R K W, Lines D, Foster E, Macleod C N, Pierce S G, Marinelli G, Williams S and Ding J L. 2022. Increasing the speed of automated ultrasonic inspection of as-built additive manufacturing components by the adoption of virtual source aperture.Mater. Des.220, 110822.

[92] [92] Alcaraz J Y II, Foqu W, Sharma A and Tjahjowidodo T. 2024. Indirect porosity detection and root-cause identification in WAAM.J. Intell. Manuf.35, 1607–1628.

[93] [93] Biswal R, Zhang X, Shamir M, Al Mamun A, Awd M, Walther F and Syed A K. 2019. Interrupted fatigue testing with periodic tomography to monitor porosity defects in wire+arc additive manufactured Ti-6Al-4V.Addit. Manuf.28, 517–527.

[94] [94] Couto M O, Rodrigues A G, Coutinho F, Costa R R, Leite A C, Lizarralde F and Filho J C P. 2022. Mapping of bead geometry in wire arc additive manufacturing systems using passive vision.J. Control Autom. Electr. Syst.33, 1136–1147.

[95] [95] Ma Y Y, Hu Z L, Tang Y, Ma S X, Chu Y W, Li X, Luo W, Guo L B, Zeng X Y and Lu Y F. 2020. Laser opto-ultrasonic dual detection for simultaneous compositional, structural, and stress analyses for wire + arc additive manufacturing.Addit. Manuf.31, 100956.

[96] [96] Xiong J and Zhang K. 2022. Monitoring multiple geometrical dimensions in WAAM based on a multi-channel monocular visual sensor.Measurement204, 112097.

[97] [97] Gler O and Diner E. 2023. Measuring and qualification on camera recordings in wire arc additive manufacturing monitoring.In Proc. 2023 5th International Congress on Human-Computer Interaction, Optimization and Robotic Applications. (IEEE, Istanbul, Turkiye). pp 1–2.

[98] [98] Mu H C, Pan Z X, Li Y X, He F Y, Polden J and Xia C Y. 2021. MIMO model predictive control of bead geometry in wire arc additive manufacturing.In Proc. 2021 IEEE 11th Annual International Conference on CYBER Technology in Automation, Control, and Intelligent Systems. (IEEE, Jiaxing, China). pp 169–174.

[99] [99] Xia C Y, Pan Z X, Zhang S Y, Li H J, Xu Y L and Chen S B. 2020. Model-free adaptive iterative learning control of melt pool width in wire arc additive manufacturing.Int. J. Adv. Manuf. Technol.110, 2131–2142.

[100] [100] Bento J B, Lopez A, Pires I, Quintino L and Santos T G. 2019. Non-destructive testing for wire+arc additive manufacturing of aluminium parts.Addit. Manuf.29, 100782.

[101] [101] Chabot A, Rauch M and Hascot J Y. 2021. Novel control model of Contact-Tip-to-Work Distance (CTWD) for sound monitoring of arc-based DED processes based on spectral analysis.Int. J. Adv. Manuf. Technol.116, 3463–3472.

[102] [102] Zimermann R, Mohseni E, Lines D, Vithanage R K W, MacLeod C N, Pierce S G, Gachagan A, Javadi Y, Williams S and Ding J L. 2021. Multi-layer ultrasonic imaging of as-built Wire + Arc Additive Manufactured components.Addit. Manuf.48, 102398.

[103] [103] Dellarre A, Braud N, Tardif N, Vignat F, Villeneuve F and Limousin M. 2023. Qualify a NIR camera to detect thermal deviation during aluminum WAAM.Int. J. Adv. Manuf. Technol.127, 625–634.

[104] [104] Xiong J, Zhu B B, Chen H and Zheng S M. 2020. Peak elimination of cross structures in wire and arc additive manufacturing using closed-loop control.J. Manuf. Process.58, 368–376.

[105] [105] Lukacs P, Davis G, Stratoudaki T, Williams S, MacLeod C N and Gachagan A. 2021. Remote ultrasonic imaging of a wire arc additive manufactured ti-6ai-4v component using laser induced phased array.In Proc. 2021 IEEE International Instrumentation and Measurement Technology Conference. (IEEE, Glasgow, United Kingdom).

[106] [106] Huang C, Wang G L, Song H, Li R S and Zhang H O. 2022. Rapid surface defects detection in wire and arc additive manufacturing based on laser profilometer.Measurement189, 110503.

[107] [107] Wang X and Guan X. 2022. Ultrasonic phased array inspection of defects in additive manufactured aluminum alloy considering velocity anisotropy.In Proc. 12th International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering. (IET, Emeishan, China). pp 1003–1008.

[108] [108] Li Y X, Mu H C, Polden J, Li H J, Wang L, Xia C Y and Pan Z X. 2022. Towards intelligent monitoring system in wire arc additive manufacturing: a surface anomaly detector on a small dataset.Int. J. Adv. Manuf. Technol.120, 5225–5242.

[109] [109] Zheng S C, Zhou X M, Lv Q Z and Zhang Z Q. 2023. Wire arc additive manufacturing microstructure pore defect detection algorithm based on improved YOLOv5.In Proc. 2023 4th International Conference on Big Data, Artificial Intelligence and Internet of Things Engineering. (IEEE, Hangzhou, China). pp 102–106.

[110] [110] Xia C Y, Pan Z X, Li Y X, Chen J and Li H J. 2022. Vision-based melt pool monitoring for wire-arc additive manufacturing using deep learning method.Int. J. Adv. Manuf. Technol.120, 551–562.

[111] [111] Wang Y M, Zhang C R, Lu J, Bai L F, Zhao Z and Han J. 2020. Weld reinforcement analysis based on long-term prediction of molten pool image in additive manufacturing.IEEE Access8, 69908–69918.

[112] [112] Zhang Z F, Yu H W, Lv N and Chen S B. 2013. Real-time defect detection in pulsed GTAW of Al alloys through online spectroscopy.J. Mater. Process. Technol.213, 1146–1156.

[113] [113] Mireles J, Ridwan S, Morton P A, Hinojos A and Wicker R B. 2015. Analysis and correction of defects within parts fabricated using powder bed fusion technology.Surf. Topography: Metrol. Prop.3, 034002.

[114] [114] Zhu L, Luo Y, Han J T, Zhang C Y, Xu J and Chen D. 2019. Energy characteristics of droplet transfer in wire-arc additive manufacturing based on the analysis of arc signals.Measurement134, 804–813.

[115] [115] Lopez A B, Santos J, Sousa J P, Santos T G and Quintino L. 2019. Phased array ultrasonic inspection of metal additive manufacturing parts.J. Nondestruct. Eval.38, 62.

[116] [116] Lopez A, Bacelar R, Pires I, Santos T G, Sousa J P and Quintino L. 2018. Non-destructive testing application of radiography and ultrasound for wire and arc additive manufacturing.Addit. Manuf.21, 298–306.

[117] [117] Willcox M and Downes G. 2003.A Brief Description of NDT Techniques. (NDT Equipment Limited, Toronto).

[118] [118] Cunha F G, Santos T G and Xavier J. 2021. In situ monitoring of additive manufacturing using digital image correlation: a review.Materials14, 1511.

[119] [119] Saini D and Floyd S. 1998. An investigation of gas metal arc welding sound signature for on-line quality control.Weld. J.77, 172s–179s

[120] [120] Ng W L, Goh G L, Goh G D, Ten J S J and Yeong W Y. 2024. Progress and opportunities for machine learning in materials and processes of additive manufacturing.Adv. Mater.36, 2310006.

[121] [121] Ding D H, Pan Z X, Cuiuri D, Li H J, Van Duin S and Larkin N. 2016. Bead modelling and implementation of adaptive MAT path in wire and arc additive manufacturing.Robot. Comput. Integr. Manuf.39, 32–42.

[122] [122] Ding D H, Pan Z X, Cuiuri D, Li H J, Larkin N and Van Duin S. 2016. Automatic multi-direction slicing algorithms for wire based additive manufacturing.Robot. Comput. Integr. Manuf.37, 139–150.

[123] [123] Li Y X, Polden J, Pan Z X, Cui J Y, Xia C Y, He F Y, Mu H C, Li H J and Wang L. 2022. A defect detection system for wire arc additive manufacturing using incremental learning.J. Ind. Inf. Integr.27, 100291.

[124] [124] Zhang T Y, Wang L Y, Xu C, Cheng J J and Wang K H. 2023. Early-warning system for copper alloy abnormal molten pool in wire-arc additive manufacturing via convolutional neural network method.J. Mater. Eng. Perform.32, 11230–11239.

[125] [125] Valizadeh M and Wolff S J. 2022. Convolutional Neural Network applications in additive manufacturing: a review.Adv. Ind. Manuf. Eng.4, 100072.

[126] [126] Shen B, Lu J, Wang Y M, Chen D L, Han J, Zhang Y and Zhao Z. 2022. Multimodal-based weld reinforcement monitoring system for wire arc additive manufacturing.J. Mater. Res. Technol.20, 561–571.

[127] [127] Zhang T Y, Xu C, Cheng J J, Chen Z W, Wang L Y and Wang K H. 2023. Research of surface oxidation defects in copper alloy wire arc additive manufacturing based on timefrequency analysis and deep learning method.J. Mater. Res. Technol.25, 511–521.

[128] [128] Zhou X M, Fu Z C, Zhou X, Bai X W, Tian Q H, Fu J J and Zhang H O. 2024. Numerical simulation of heat and mass transient behavior during WAAM overlapping deposition with external deflection magnetic field.Int. J. Heat Mass Transfer218, 124780.

[129] [129] de Lima Silva F E, Lira J S S, de Souto J I V, Lpez E A T and de Lima J S. 2024. Assessment and implementation of active cooling systems with forced air and half-immersion in liquid in wire arc additive manufacturing.Int. J. Adv. Manuf. Technol.135, 2539–2554.

[130] [130] Martina F, Colegrove P A, Williams S W and Meyer J. 2015. Microstructure of interpass rolled wire + arc additive manufacturing Ti-6Al-4V components.Metall. Mater. Trans. A46, 6103–6118.

[131] [131] Zhao X S, Wang Y X, Song H, Huang J W, Zhang H P, Chen X, Huang C and Li R S. 2023. Effect of auxiliary longitudinal magnetic field on overlapping deposition of wire arc additive manufacturing.Int. J. Adv. Manuf. Technol.125, 1383–1401.

[132] [132] Sun L B, Guo C H, Huang L J, Jiang F C, Xu K and Huang R S. 2022. Effect and mechanism of inter-layer ultrasonic impact strengthening on the anisotropy of low carbon steel components fabricated by wire and arc additive manufacturing.Mater. Sci. Eng. A848, 143382.

[133] [133] Duarte V R, Rodrigues T A, Schell N, Miranda R M, Oliveira J P and Santos T G. 2020. Hot forging wire and arc additive manufacturing (HF-WAAM).Addit. Manuf.35, 101193.

[134] [134] Ivanov Y, Gromov V, Konovalov S, Efimov M, Shliarova Y and Panchenko I. 2023. Effect of electron-beam treatment on the structure and properties of (B+Cr) film deposited on a high-entropy alloy AlCrFeCoNi.Mater. Lett.335, 133704.

[135] [135] Singh S, Resnina N, Belyaev S, Jinoop A N, Shukla A, Palani I A, Paul C P and Bindra K S. 2021. Investigations on NiTi shape memory alloy thin wall structures through laser marking assisted wire arc based additive manufacturing.J. Manuf. Process.66, 70–80.

[136] [136] Ji F L, Qin X P, Hu Z Q, Xiong X C, Ni M and Wu M W. 2022. Influence of ultrasonic vibration on molten pool behavior and deposition layer forming morphology for wire and arc additive manufacturing.Int. Commun. Heat Mass Transfer130, 105789.

[137] [137] Zhou J H, Jia C B, Guo M, Chen M A, Gao J Q and Wu C S. 2021. Investigation of the WAAM processes features based on an indirect arc between two non-consumable electrodes.Vacuum183, 109851.

[138] [138] Huang J K, Liu G Y, Yu X Q, Wu H S, Huang Y Q, Yu S R and Fan D. 2022. Microstructure regulation of titanium alloy functionally gradient materials fabricated by alternating current assisted wire arc additive manufacturing.Mater. Des.218, 110731.

[139] [139] Niu F Y, Wang Q Y, Shan B Y, Sun X, Ma G Y and Wu D J. 2023. Synchronous-hammer-forging-assisted wire arc additive manufacturing Al-Mg alloy.J. Alloys Compd.965, 171345.

[140] [140] Wang T Z, Maznov V and Liu X. 2022. Ultrasonic effects on gas tungsten arc based wire additive manufacturing of aluminum matrix nanocomposite.Mater. Des.214, 110393.

[141] [141] Duan X M, Li Q, Xie W R and Yang X D. 2023. Wire arc metal additive manufacturing using pulsed arc plasma (PAP-WAAM) for effective heat management.J. Mater. Process. Technol.311, 117806.

[142] [142] Shao Z X, Wu B T, Li P B, Ma W, Tan H F and Li H J. 2023. Mechanism of corrosion protection in reinforced Ti-6Al-4 V alloy by wire arc additive manufacturing using magnetic arc oscillation.Mater. Charact.199, 112844.

[143] [143] Qiu Z J, Dong B S, Wu B T, Wang Z Y, Carpenter K, Wu T, Zhang J R, Wexler D, Zhu H L and Li H J. 2021. Tailoring the surface finish, dendritic microstructure and mechanical properties of wire arc additively manufactured Hastelloy C276 alloy by magnetic arc oscillation.Addit. Manuf.48, 102397.

[144] [144] Zhang C, Gao M and Zeng X Y. 2019. Workpiece vibration augmented wire arc additive manufacturing of high strength aluminum alloy.J. Mater. Process. Technol.271, 85–92.

[145] [145] Vzquez L, Rodrguez N, Rodrguez I, Alberdi E and lvarez P. 2020. Influence of interpass cooling conditions on microstructure and tensile properties of Ti-6Al-4V parts manufactured by WAAM.Weld. World64, 1377–1388.

[146] [146] Wu B T, Pan Z X, Ding D H, Cuiuri D, Li H J and Fei Z Y. 2018. The effects of forced interpass cooling on the material properties of wire arc additively manufactured Ti6Al4V alloy.J. Mater. Process. Technol.258, 97–105.

[147] [147] Kozamernik N, Braun D and Klobar D. 2020. WAAM system with interpass temperature control and forced cooling for near-net-shape printing of small metal components.Int. J. Adv. Manuf. Technol.110, 1955–1968.

[148] [148] Wu B T, Pan Z X, Chen G Y, Ding D H, Yuan L, Cuiuri D and Li H J. 2019. Mitigation of thermal distortion in wire arc additively manufactured Ti6Al4V part using active interpass cooling.Sci. Technol. Weld. Joining24, 484–494.

[149] [149] Ding D H, Wu B T, Pan Z X, Qiu Z J and Li H J. 2020. Wire arc additive manufacturing of Ti6AL4V using active interpass cooling.Mater. Manuf. Process.35, 845–851.

[150] [150] Le V T and Mai D S. 2020. Microstructural and mechanical characteristics of 308L stainless steel manufactured by gas metal arc welding-based additive manufacturing.Mater. Lett.271, 127791.

[151] [151] Li Z X, Liu C M, Xu T Q, Ji L, Wang D H, Lu J P, Ma S Y and Fan H L. 2019. Reducing arc heat input and obtaining equiaxed grains by hot-wire method during arc additive manufacturing titanium alloy.Mater. Sci. Eng. A742, 287–294.

[152] [152] Le V T, Mai D S, Doan T K and Paris H. 2021. Wire and arc additive manufacturing of 308L stainless steel components: optimization of processing parameters and material properties.Eng. Sci. Technol. Int. J.24, 1015–1026.

[153] [153] Corradi D R, Bracarense A Q, Wu B T, Cuiuri D, Pan Z X and Li H J. 2020. Effect of Magnetic Arc Oscillation on the geometry of single-pass multi-layer walls and the process stability in wire and arc additive manufacturing.J. Mater. Process. Technol.283, 116723.

[154] [154] Yu X, Lim Y C, Smith R, Babu S S, Farson D F, Lippold J C and McCracken S. 2014. Reducing hot cracking tendency of dissimilar weld overlay by magnetic arc oscillation.Mater. Sci. Technol.30, 930–937.

[155] [155] da Silva L J, Scotti F M, Fernandes D B, Reis R P and Scotti A. 2021. Effect of O2 content in argon-based shielding gas on arc wandering in WAAM of aluminum thin walls.CIRP J. Manuf. Sci. Technol.32, 338–345.

[156] [156] Derekar K S, Addison A, Joshi S S, Zhang X, Lawrence J, Xu L, Melton G and Griffiths D. 2020. Effect of pulsed metal inert gas (pulsed-MIG) and cold metal transfer (CMT) techniques on hydrogen dissolution in wire arc additive manufacturing (WAAM) of aluminium.Int. J. Adv. Manuf. Technol.107, 311–331.

[157] [157] Guan Q, Zhang C X and Guo D L. 1993. Low stress nondeflecting welding process of dynamic control sheet member and its apparatus.CN Patent. CN1029669C.

[158] [158] Hnnige J R, Colegrove P A, Ganguly S, Eimer E, Kabra S and Williams S. 2018. Control of residual stress and distortion in aluminium wire + arc additive manufacture with rolling.Addit. Manuf.22, 775–783.

[159] [159] Fang X W, Zhang L J, Chen G P, Huang K, Xue F, Wang L, Zhao J Y and Lu B H. 2021. Microstructure evolution of wire-arc additively manufactured 2319 aluminum alloy with interlayer hammering.Mater. Sci. Eng. A800, 140168.

[160] [160] Fan S Y, Guo X M, Li Z H, Ma J, Li F and Jiang Q W. 2023. A review of high-strength aluminum-copper alloys fabricated by wire arc additive manufacturing: microstructure, properties, defects, and post-processing.J. Mater. Eng. Perform.32, 8517–8540.

[161] [161] Barath Kumar M D and Manikandan M. 2022. Assessment of process, parameters, residual stress mitigation, post treatments and finite element analysis simulations of wire arc additive manufacturing technique.Met. Mater. Int.28, 54–111.

[162] [162] Elmer J W and Gibbs G. 2022. Mechanical rolling and annealing of wire-arc additively manufactured stainless steel plates.Sci. Technol. Weld. Joining27, 14–21.

[163] [163] Zhou S Y, Wu K, Yang G, Wu B, Qin L Y, Wu H and Yang C Y. 2022. Microstructure and mechanical properties of wire arc additively manufactured 205A high strength aluminum alloy: the comparison of as-deposited and T6 heat-treated samples.Mater. Charact.189, 111990.

[164] [164] Vishnukumar M, Muthupandi V and Jerome S. 2022. Effect of post-heat treatment on the mechanical and corrosion behaviour of SS316L fabricated by wire arc additive manufacturing.Mater. Lett.307, 131015.

[165] [165] Qiu Z J, Wu B T, Wang Z Y, Wexler D, Carpenter K, Zhu H L, Murnsky O, Zhang J R and Li H J. 2021. Effects of post heat treatment on the microstructure and mechanical properties of wire arc additively manufactured Hastelloy C276 alloy.Mater. Charact.177, 111158.

[166] [166] Oguntuase O, Ojo O A and Beddoes J. 2020. Influence of post-deposition heat treatments on the microstructure and mechanical properties of wire–arc additively manufactured ATI 718Plus.Metall. Mater. Trans. A51, 1846–1859.

[167] [167] Chen Z and Soh G S. 2022. Microstructure and mechanical properties of Wire Arc Additive Manufactured (WAAM) Inconel 718 parts via post heat treatments.Mater. Today Proc.70, 567–573.

[168] [168] Bermingham M J, Nicastro L, Kent D, Chen Y and Dargusch M S. 2018. Optimising the mechanical properties of Ti-6Al-4V components produced by wire + arc additive manufacturing with post-process heat treatments.J. Alloy Compd.753, 247–255.

[169] [169] Elmer J W, Fisher K, Gibbs G, Sengthay J and Urabe D. 2022. Post-build thermomechanical processing of wire arc additively manufactured stainless steel for improved mechanical properties and reduction of crystallographic texture.Addit. Manuf.50, 102573.

[170] [170] Motwani A, Vamsi P K, Puri Y and Kumar A. 2023. Post-processing of wire arc additive manufactured Inconel-625 thin structure by electro-discharge machining with TLBO assistance.Mater. Lett.348, 134672.

[171] [171] Li K, Klecka M A, Chen S Y and Xiong W. 2021. Wire-arc additive manufacturing and post-heat treatment optimization on microstructure and mechanical properties of Grade 91 steel.Addit. Manuf.37, 101734.

[172] [172] Vahedi Nemani A, Ghaffari M and Nasiri A. 2020. Comparison of microstructural characteristics and mechanical properties of shipbuilding steel plates fabricated by conventional rolling versus wire arc additive manufacturing.Addit. Manuf.32, 101086.

[173] [173] Shen C, Pan Z X, Ding D H, Yuan L, Nie N, Wang Y, Luo D Z, Cuiuri D, Van Duin S and Li H J. 2018. The influence of post-production heat treatment on the multidirectional properties of nickel-aluminum bronze alloy fabricated using wire-arc additive manufacturing process.Addit. Manuf.23, 411–421.