Recent development in the Wire arc additive manufacturing (WAAM) provides a promising alternative for fabricating high value-added medium to large metal components for many industries such as aerospace and maritime industry. However, challenges stemming from the demand for increasingly complex and high-quality products, hinder the widespread adoption of the conventional WAAM method for manufacturing industries. The development of artificial intelligence (AI) techniques may provide new opportunities to upgrade WAAM to the next generation. Hence, this paper provides a comprehensive review of the state-of-the-art research on AI techniques in WAAM. Firstly, we proposed a novel concept of intelligent wire arc additive manufacturing (IWAAM) and revealed the challenges of developing IWAAM. Secondly, an overview of the research progress of applying AI techniques to several aspects of the WAAM process chain, including fabrication process pre-design, online deposition control and offline parameter optimization is provided. Thirdly, the relevant machine learning algorithms, and the knowledge of corresponding AI techniques, are also reviewed in detail. Through reviewing the current research articles, issues of applying AI techniques to the WAAM process are presented and analysed. Finally, future research perspectives in terms of novel AI technique applications and AI technique enhancement are discussed. Through this systematic review, it is expected that WAAM may gradually develop into a smart/intelligent manufacturing technology in the context of Industry 4.0 through the adoption of AI techniques.

电弧增材制造 (WAAM) 的最新发展为航空航天和航海业等许多行业制造高附加值的中型到大型金属部件提供了一种有前途的替代方案。然而，对日益复杂和高质量产品的需求带来的挑战阻碍了传统 WAAM 方法在制造业中的广泛采用。人工智能（AI）技术的发展可能为将 WAAM 升级到下一代提供新的机会。因此，本文全面回顾了 WAAM 中人工智能技术的最新研究。首先，我们提出了智能电弧增材制造 (IWAAM) 的新概念，并揭示了开发 IWAAM 的挑战。第二，概述了将人工智能技术应用于 WAAM 工艺链的几个方面的研究进展，包括制造工艺预设计、在线沉积控制和离线参数优化。第三，详细回顾了相关的机器学习算法，以及相应的人工智能技术知识。通过回顾当前的研究文章，提出并分析了将人工智能技术应用于 WAAM 过程的问题。最后，讨论了人工智能新技术应用和人工智能技术增强方面的未来研究前景。通过本次系统回顾，WAAM有望通过采用人工智能技术，逐步发展成为工业4.0背景下的智能/智能制造技术。