X-ray diffraction Debye Ring Analysis for STress measurement (DRAST): a new method to evaluate residual stresses

Gelfi, Marcello; Bontempi, Elza; Roberti, Roberto; Depero, Laura E.

doi:10.1016/j.actamat.2003.09.041

Cited by 80 publications

(32 citation statements)

References 8 publications

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“…Application of this method, known as the sin 2 ψ technique, with the two-dimensional detector requires extraction of one-dimensional profile. The width of a particular Debye ring has been shown to yield similar relationship with sin 2 ψ as that of lattice spacing d [68]. But the advantage of using two-dimensional detector is that multiple d-spacing values can be obtained by extracting one-dimensional profiles along different azimuthal directions from a single diffraction pattern.…”

Section: Residual Stress-strain Measurementmentioning

confidence: 99%

X-ray diffraction as a promising tool to characterize bone nanocomposites

Tadano

Giri

2011

Science and Technology of Advanced Materials

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To understand the characteristics of bone at the tissue level, the structure, organization and mechanical properties of the underlying levels down to the nanoscale as well as their mutual interactions need to be investigated. Such information would help understand changes in the bone properties including stiffness, strength and toughness and provide ways to assess the aged and diseased bones and the development of next generation of bio-inspired materials. X-ray diffraction techniques have gained increased interest in recent years as useful non-destructive tools for investigating the nanostructure of bone. This review provides an overview on the recent progress in this field and briefly introduces the related experimental approach. The application of x-ray diffraction to elucidating the structural and mechanical properties of mineral crystals in bone is reviewed in terms of characterization of in situ strain, residual stress-strain and crystal orientation.

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Section: Residual Stress-strain Measurementmentioning

confidence: 99%

X-ray diffraction as a promising tool to characterize bone nanocomposites

Tadano

Giri

2011

Science and Technology of Advanced Materials

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“…X-ray diffraction line profile analysis (XRDLPA) is a well-known non-destructive technique (NDT). It is often used to determine the residual stresses in the components wherein the crystalline planes are used as strain gauges [13]. When the metal components are under stresses, the resulting elastic strains can cause the spacing changes of atomic planes in the metallic crystal structure.…”

Section: Experimental Testsmentioning

confidence: 99%

Investigation of Single and Dual Step Shot Peening Effects on Mechanical and Metallurgical Properties of 18CrNiMo7-6 Steel Using Artificial Neural Network

Maleki¹

2015

IJMMM

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Abstract-Shot peening is a process of cold working a part that increase its resistance to metal fatigue and some forms of stress corrosion. Shot peening causes plastic deformation in the surface of the peened part and leads some changes in mechanical and metallurgical properties of it. Artificial intelligence (AI) systems such as artificial neural networks (ANNs) have found many applications to predict and optimize the engineering problems in the last few years. In present study effects of SP on mechanical and metallurgical properties of 18CrNiMo7

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“…A sample for the rst method has to be cut and polished before the test. The latter ones include X-ray diffraction 7) and VISAR methods 8) . There are still some limitations for these methods for applying to industrial process.…”

Section: Introductionmentioning

confidence: 99%

Effect of Confinement Layer on Laser Ablation and Cavitation Bubble during Laser Shock Peening

et al. 2016

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Laser shock peening (LSP) is one of surface treatments to induce residual compressive stresses near metal surface to improve the resistance of materials to surface-related failures, such as fatigue and stress corrosion cracking. In LSP process, short pulsed laser is focused and irradiated to the material covered by transparent overlay such as glass or water. This transparent overlay is also known as a con nement layer and has an important role to increase impact pressure during LSP process. When con nement layer is liquid, the characteristics of the layer such as temperature, viscosity, etc. affect the phenomena occurring during the peening process and undoubtedly in uence the induced residual stress. In the present study, Acoustic Emission (AE) technique coupling with high speed camera was applied to study the effect of con nement layer on LSP process. The results were discussed using the impact force calculated by inverse analysis of detected AE waveforms and bubble parameters observed by high speed camera. The results showed that temperature, thickness and viscosity of con nement layer had strong in uence on the generation and collapse of cavitation bubble. The optimization of process parameters could be obtained by AE technique.

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X-ray diffraction Debye Ring Analysis for STress measurement (DRAST): a new method to evaluate residual stresses

Cited by 80 publications

References 8 publications

X-ray diffraction as a promising tool to characterize bone nanocomposites

X-ray diffraction as a promising tool to characterize bone nanocomposites

Investigation of Single and Dual Step Shot Peening Effects on Mechanical and Metallurgical Properties of 18CrNiMo7-6 Steel Using Artificial Neural Network

Effect of Confinement Layer on Laser Ablation and Cavitation Bubble during Laser Shock Peening

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