...A. Makino; D. V. Nelson; M. R. Hill The strain gauge rosette hole drilling method is often used for determining residual stresses versus depth to depths on the order of 0.5–1.5 mm. Frequently, it is of interest to find stress profiles to greater depths. To provide such a capability, a new approach...

... material. It is shown that for EDM machining conditions of 120 V/12 A/ 6 μ s / 30 μ s (discharge voltage/pulse current/pulse-on duration/pulse-off duration), the hole-drilling induced stress reduces with an increasing thermal conductivity ( k ) in accordance with the relation σ cal = 325.5 k − 0.65 MPa...

...D. Vangi; S. Tellini When measuring residual stresses using the hole-drilling strain-gauge method, plasticity effects arise if the residual stress level exceeds about 60% of the material yield strength. In this case the classical methods, which are based on the linear elastic material behavior, do...

... in drilling of TiGr composites. The effects of consolidation processing, such as induction heating press and autoclave processes, on drilling characteristics of TiGr composites were examined. The hole quality parameters and hole exit damage was investigated and discussed. 03 03 2006 30 03 2007...

...Gary S. Schajer An effective procedure is presented that allows stable hole-drilling residual stress calculations using strain data from measurements taken at many small increments of hole depth. This use of many strain measurements is desirable because it improves the data content...

... is assigned a target surface area 2 C × 2 C thus allowing higher density of impact point locations. Average residual stresses inside the target predicted by FEA were compared with experimental measurements using the hole-drilling technique. In order to do this, a new averaged technique was developed to obtain...

..., obtained using three independent measurement techniques, of the residual stress field generated in an aluminium alloy plate after side-punching. Incremental center hole drilling is used to determine the near-surface residual stress field, while synchrotron x-ray diffraction and deep hole drilling are used...

...Hwa-Teng Lee; Joachim Mayer; Fu-Chuan Hsu; Werner P. Rehbach; Thomas Weirich; Arbi Dimyati; Tzu-Yao Tai This study adopts the application of the electrodischarge machining (EDM) hole-drilling method to the measurement of residual stress in AISI D2 cold work tool steel, AISI H13 hot work tool steel...

...J. P. Nobre; A. M. Dias; J. Gibmeier; M. Kornmeier A criterion to evaluate the influence of the so-called plasticity effect on the final outcome of the incremental hole-drilling technique (IHD), for measuring residual stresses induced by mechanical surface treatments, is proposed here. In practice...

...Antonio Baldi Most of the full field methods for residual stress investigation combine an optical interferometric technique (grating interferometry, speckle interferometry, holographic interferometry) with the standard hole drilling method. Nowadays many articles describing this kind of approach...