The level of residual stresses is of great importance for many applications. In this work, the two established residual stress analysis methods x-ray stress analysis and incremental hole-drilling combined with electronic speckle pattern interferometry are compared. Each stress analysis method has its specific limitations. Furthermore, the residual stress state of a material is influenced by its processing history. To compare both methods, aluminum-based specimens (AlCu6Mn, AlZn5.5MgCu) with different processing histories were investigated. Measurements with both methods were conducted on the same specimens and on the same measurement spots. Highest stress levels were found in the mechanically machined specimen, while heat treatment via tempering or deposition welding shows reduced stress levels inside of the specimens. In case of cold spraying, the stresses in the feedstock material are considered negligible. In contrast, cold-spray coatings deposited on construction steel substrate exhibited tensile stresses, which relax over time at room temperature.

中文翻译：

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通过 X 射线应力分析和增量钻孔法进行残余应力测量的比较

残余应力水平对于许多应用非常重要。在这项工作中，对两种已建立的残余应力分析方法 X 射线应力分析和增量钻孔结合电子散斑图案干涉进行了比较。每种应力分析方法都有其特定的局限性。此外，材料的残余应力状态受其加工历史的影响。为了比较这两种方法，研究了具有不同加工历史的铝基样品（AlCu6Mn、AlZn5.5MgCu）。两种方法的测量都是在相同的样品和相同的测量点上进行的。在机械加工的试样中发现了最高的应力水平，而通过回火或堆焊进行的热处理显示出试样内部的应力水平降低。在冷喷涂的情况下，原料中的应力被认为可以忽略不计。相比之下，沉积在建筑钢基材上的冷喷涂涂层表现出拉伸应力，在室温下会随着时间的推移而松弛。