Residual Stress Analysis on Thick Film Systems by the Incremental Hole-Drilling Method – Simulation and Experimental Results
Residual Stress Analysis on Thick Film Systems by the Incremental Hole-Drilling Method – Simulation and Experimental Results
复制标题
通过渐进式钻孔方法对厚膜系统进行残余应力分析 – 模拟和实验结果
DOI：
10.1007/s11340-013-9720-y
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发表时间：
2013
影响因子：
2.4
通讯作者：
J. Gibmeier
中科院分区：
文献类型：
--
作者：
E. Obelode;J. Gibmeier
厚膜系统（例如热喷涂涂层）中的残余应力状态对于组件的许多特性以及评估涂层在热和/或机械载荷下的完整性至关重要。因此，有必要能够确定涂层中、界面处和基体中的局部残余应力分布。增量钻孔法是一种广泛使用的测量残余应力深度分布的方法，该方法已经应用于热喷涂涂层。但是，对于在深度上具有应力梯度的层状材料，目前还没有可靠的钻孔评价方法。目的是研究仅适用于均匀材料状态残余应力分析的增量钻孔法的现有评估方法在多大程度上可应用于涂层厚度在50 μm和1000 μm之间的厚膜系统，并指出这些现有方法的应用局限性。对轴对称残余应力状态为σ1= σ2的涂层系统进行了系统的有限元研究。结果表明，传统的评价方法开发的均匀，非层状材料状态可以成功地应用于应力评估在基板和涂层的小和足够大的涂层厚度，分别，无论使用的评估算法的类型，即微分或积分的方法。这同样适用于杨氏模量比接近1（在0.8和1.2之间）的材料组合。研究表明，在给定范围之外，必须应用特定情况校准来计算可靠的结果。此外，校准数据是针对选定的模型涂层系统确定的。使用这些情况下特定的校准数据的残余应力测定的准确性进行了检查，并相对于涂层系统的边界条件，即涂层厚度和杨氏模量的准确知识的评价的灵敏度进行了系统的研究。最后，校准数据被施加在热喷涂铝涂层上的钢基体分析和使用增量钻孔方法的结果进行了比较，从X射线应力分析的结果。
The residual stress state in thick film systems, as for example thermal spray coatings, is crucial for many of the component’s properties and for the evaluation of the integrity of the coating under thermal and/or mechanical loading. Therefore it is necessary to be able to determine the local residual stress distribution in the coating, at the interface and in the substrate. The incremental hole-drilling method is a widely used method for measuring residual stress depth profiles, which was already applied for thermally sprayed coatings. But so far no reliable hole-drilling evaluation method exists for layered materials having a stress gradient in depth. The objective was to investigate, how far existing evaluation methods of the incremental hole-drilling method that are only valid for residual stress analysis of homogenous material states can be applied to thick film systems with coating thicknesses between 50 μm and 1000 μm and to point out the application limits for these already existing methods. A systematic Finite Element (FE) study was carried out for coating systems with an axisymmetric residual stress state σ1= σ2. It is shown that conventional evaluation methods developed for homogeneous, non-layered material states can be successfully applied for a stress evaluation in the substrate and the coating for small and for sufficiently large coating thicknesses, respectively, regardless of the type of evaluation algorithm used i.e. the differential or the integral method. The same accounts for material combinations that have a Young’s modulus ratio close to one, between 0.8 and 1.2. The studies indicated that outside the given ranges case specific calibration must be applied to calculate reliable results. Further, calibration data were determined case specifically for a selected model coating system. The accuracy of a residual stress determination using these case specific calibration data was examined and the sensitivity of the evaluation with respect to an accurate knowledge of the boundary conditions of the coating system i.e. the coating thickness and the Young modulus was studied systematically. Finally, the calibration data were applied on a thermally sprayed aluminium coating on a steel substrate analysis and the results for using the incremental hole drilling method were compared to results from X-ray stress analysis.
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爱因贝特拉祖尔
DOI：
--
发表时间：
1972
期刊：
影响因子：
--
作者：
F. Swatonek
通讯作者：
F. Swatonek
影响因子：
1.1
作者：
Eigenmann, B;Macherauch, E
通讯作者：
Macherauch, E
重量 3/1995，S.148–160，重量 4/1995，S.199–216 和重量 9/1996，S.426–437
DOI：
--
发表时间：
1996
期刊：
影响因子：
--
作者：
B. Eigenmann;E. Macherauch
通讯作者：
E. Macherauch
喷砂对钢表面的侵蚀作为等离子喷涂的准备
DOI：
--
发表时间：
1996
期刊：
影响因子：
--
作者：
B. Griffiths;D. Gawne;G. Dong
通讯作者：
G. Dong
在高应力表面层情况下通过钻孔法测定残余应力
DOI：
--
发表时间：
2004
期刊：
影响因子：
--
作者：
J. Gibmeier;J. Nobre;B. Scholtes
通讯作者：
B. Scholtes