The Application of Fine Increment Hole Drilling for Measuring Machining-Induced Residual Stresses
The Application of Fine Increment Hole Drilling for Measuring Machining-Induced Residual Stresses
复制标题
精细增量孔钻削在测量加工残余应力中的应用
DOI：
10.4028/www.scientific.net/amm.3-4.105
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
A. T. Fry
中科院分区：
文献类型：
--
作者：
P. Grant;J. Lord;P. Whitehead;A. T. Fry
钻孔是测量残余应力最广泛使用的技术之一，但传统方法在可分辨的近表面细节方面存在局限性。由于担心在加工和表面处理过程中可能产生的诱导残余应力水平，人们对开发一种通过应用微小增量钻孔来获取近表面残余应力信息的技术非常感兴趣。如果使用传统的大深度增量，关键信息可能会丢失，而使用小至20μm深度增量的微小增量钻孔方法提供了一种具有成本效益且快速的解决方案，有可能测量近表面应力。研究结果集中在三项不同的加工研究和一个喷丸处理的试样上，在所有这些情况下，应力场在深度方向上变化迅速，特别是在靠近表面处。对加工参数的系统评估不在本文的范围内，也未给出，但研究工作重点在于强调微小增量钻孔方法的应用和潜力。
Hole drilling is one of the most widely used techniques for measuring residual stress, but the conventional approach is limited in the near surface detail that can be resolved. Because of concerns about the levels of induced residual stress that might develop during machining and surface treatment processes, there is significant interest in developing a technique that can obtain near-surface residual stress information by the application of fine-increment hole drilling. Critical information can be lost if conventional, large depth increments are used and the fine incremental hole drilling approach, using depth increments as small as 20µm, offers a cost effective and rapid solution, with the possibility of measuring near surface stresses. Results focus on three different machining studies and a shot peened specimen, all cases where the stress field changes rapidly through the depth, particularly close to the surface. A systematic assessment of machining parameters is not within the scope of this paper and is not presented, but work has focused on highlighting the application and potential of the fine increment hole drilling approach.