Abstract Additive Manufacturing has recently gained great importance to produce metallic structural elements for civil engineering applications. While a lot of research effort has been focused on different technologies (such as Powder Bed Fusion), there is still quite limited knowledge concerning the structural response of Wire-and-Arc Additive Manufactured (WAAM) metallic elements, as very few experimental campaigns aimed at assessing their geometrical and mechanical properties have been carried out. The paper presents selected results of a wide experimental campaign focused on the assessment of the main geometrical and mechanical properties of Wire-and-Arc Additive Manufactured (WAAM) stainless steel material, carried out at the Topography and Structural Engineering Labs of University of Bologna. In detail, the focus is on the characterization of the surface irregularities by means of various measuring techniques and on the evaluation of the main material mechanical properties, including tensile and compressive strengths, Young's modulus and post elastic behavior. Tests results have been interpreted through statistical tools in order to derive mean values and gather information about the variability of both geometrical and mechanical parameters.

中文翻译：

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线弧增材制造不锈钢构件结构设计的实验结果

摘要 增材制造最近在生产用于土木工程应用的金属结构元件方面变得非常重要。虽然很多研究工作都集中在不同的技术（例如粉末床融合）上，但关于线弧添加剂制造 (WAAM) 金属元素的结构响应的知识仍然非常有限，因为很少有实验活动针对在评估它们的几何和机械性能时已经进行了。本文介绍了在博洛尼亚大学地形和结构工程实验室进行的广泛实验活动的选定结果，重点是评估线弧添加剂制造 (WAAM) 不锈钢材料的主要几何和机械性能。详细，重点是通过各种测量技术表征表面不规则性，并评估主要材料机械性能，包括拉伸和压缩强度、杨氏模量和后弹性行为。测试结果已通过统计工具进行解释，以得出平均值并收集有关几何和机械参数变化的信息。