A New Procedure to Measure Near Yield Residual Stresses Using the Deep Hole Drilling Technique

Mahmoudi, A.H.; Hossain, S; Truman, Christopher E; Smith, David J.; Pavier, Martyn J

doi:10.1007/s11340-008-9164-y

Cited by 104 publications

(64 citation statements)

References 19 publications

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“…A recent advance of the DHD technique, called incremental deep hole drilling (iDHD), has been developed specifically to enable measurements of residual stress in thick-sectioned components when the residual stress state is multi-axial and close to yield. [16] Full details of the iDHD technique are given in reference [17].…”

Section: Incremental Deep Hole Drilling (Idhd)mentioning

confidence: 99%

The influence of quench sensitivity on residual stresses in the aluminium alloys 7010 and 7075

Robinson

Tanner

Truman

et al. 2012

Materials Characterization

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The most critical stage in the heat treatment of high strength aluminium alloys is the rapid cooling necessary to form a supersaturated solid solution. A disadvantage of quenching is that the thermal gradients can be sufficient to cause inhomogeneous plastic deformation which in turn leads to the development of large residual stresses. Two 215 mm thick rectilinear forgings have been made from 7000 series alloys with widely different quench sensitivity to determine if solute loss in the form of precipitation during quenching can significantly affect residual stress magnitudes. The forgings were heat treated and immersion quenched using cold water to produce large magnitude residual stresses. The through thickness residual stresses were measured by neutron diffraction and incremental deep hole drilling. The distribution of residual stresses was found to be similar for both alloys varying from highly triaxial and tensile in the interior, to a state of biaxial compression in the surface. The 7010 forging exhibited larger tensile stresses in the interior. The microstructural variation from surface to centre for both forgings was determined using optical and transmission electron microscopy. These observations were used to confirm the origin of the hardness variation measured through the forging thickness. When the microstructural changes were accounted for in the through thickness lattice parameter, the residual stresses in the two forgings were found to be very similar. Solute loss in the 7075 forging appeared to have no significant effect on the residual stress magnitudes when compared to 7010.

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Section: Incremental Deep Hole Drilling (Idhd)mentioning

confidence: 99%

The influence of quench sensitivity on residual stresses in the aluminium alloys 7010 and 7075

Robinson

Tanner

Truman

et al. 2012

Materials Characterization

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show abstract

“…The first included the incremental deep-hole drilling (iDHD) technique. Detail of this method is provided in [17], only the key features are summarised here, Section 4.2. The second method included the decreasing trepanning method, also known as the over-coring deep-hole drilling (oDHD) method and is described in Section 4.3.…”

Section: Improved Modified Dhd Techniquementioning

confidence: 99%

Application of multiple analysis methods in optimising complex residual stress characterisation

Hossain

Zheng²,

Truman³

et al. 2017

Exp Tech

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An accurate characterisation of residual stress plays an important role in the structural integrity assessment of an engineering component. Several techniques and tools are available for measuring and predicting residual stresses. For example, neutron diffraction (ND) and X-ray diffraction (XRD) are non-destructive techniques used for measuring through-thickness and surface residual stresses respectively, while the deep-hole drilling (DHD) and the incremental centre-hole drilling (ICHD) are semi-destructive techniques and measure through-thickness and sub-surface residual stress respectively. In most open literature, a more favoured method is traditionally used over others, with some degree of validation using finite element analysis (FEA) predictive tool. In this paper it will be shown that the different methods and tools available are not contradicting or more superior to the others, but rather, the use of more than one available technique complementary to each other can improve the quality and the confidence in the characterisation of the residual stress state in an engineering component. In particular, the accurate knowledge of the residual stress field for a safety critical component plays a vital role for subsequent structural integrity assessment.

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“…The MIRS method is an improved type of the Deep Hole Drilling (DHD) method, [12][13][14] which was carried out according to the procedure shown in Fig. 3.…”

Section: Residual Stress Measurement By Modified Dhdmentioning

confidence: 99%

“…Simple method 12) Considering Plastic deformation easily 14) Considering Three dimensional stress Field & Plastic deformation 15) surface when cutting in the transverse direction. σ xR : The longitudinal stress remained in the thin specimen cut in the longitudinal direction.…”

Section: Residual Stress Measurement By Strain Gaugementioning

confidence: 99%

Comparative Study on Internal Residual Stresses in Electron Beam Welds

et al. 2017

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For electron beam welded joints of sheet metal with a thickness of approx. 10 mm, the distribution morphology of the internal residual stresses in the weld was researched. The residual stress distributions were measured by the strain gauge method and the Modified Deep Hole Drilling Technique (MIRS method) and were analyzed by the finite element method. Consequently, the residual stresses in the longitudinal and transverse directions of the weld were tension near the center of the plate thickness and tended to become compression as the location of stress shifted towards the top and bottom surfaces. The mechanism of such a particular profile of residual stress distribution can be considered peculiar to electron beam welding.KEY WORDS: electron beam weld; internal residual stress; modified deep hole drilling technique; MIRS method; strain gauge method.

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A New Procedure to Measure Near Yield Residual Stresses Using the Deep Hole Drilling Technique

Cited by 104 publications

References 19 publications

The influence of quench sensitivity on residual stresses in the aluminium alloys 7010 and 7075

The influence of quench sensitivity on residual stresses in the aluminium alloys 7010 and 7075

Application of multiple analysis methods in optimising complex residual stress characterisation

Comparative Study on Internal Residual Stresses in Electron Beam Welds

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