Residual stresses due to foreign object damage in laser-shock peened aerofoils: Simulation and measurement

Lin, Bing; Zabeen, S.; Tong, Jie; Preuss, Michael; Withers, Philip J.

doi:10.1016/j.mechmat.2014.12.001

Cited by 41 publications

(19 citation statements)

References 37 publications

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“…X-ray synchrotron radiation [2,19,20,57]), offers the opportunity to non-destructively measure the through thickness stress profile. It is also important to note that there is no well-established model for the relationships between anode layer degradation, failure and total stress distribution during usage of SOFC at high temperatures.…”

Section: Comparison With Previous Studiesmentioning

confidence: 99%

Neutron Diffraction Residual Strain Measurements of Molybdenum Carbide-Based Solid Oxide Fuel Cell Anode Layers with Metal Oxides on Hastelloy X

et al. 2017

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Thermal spray deposition processes impart residual stress in layered Solid Oxide Fuel Cells (SOFC) materials and hence influence the durability and efficiency of the cell. The current study which is the first of its kind in published literature, reports results on using a neutron diffraction technique, to non-destructively evaluate the through thickness strain measurement in plasma sprayed (as-sprayed) anode layer coatings on a Hastelloy®X substrate. Through thickness neutron diffraction residual strain measurements were done on three different anode coatings (Mo-Mo 2 C/Al 2 O 3 , Mo-Mo 2 C/ ZrO 2 and Mo-Mo 2 C/TiO 2 ) using the vertical scan mode. The three anode coatings (developed through optimised process parameters) investigated had porosities as high as 20%, with thicknesses between 200 μm to 300 μm deposited on 4.76 mm thick Hastelloy®X substrate discs of 20 mm diameter. The results showed that while the through thickness residual strain in all three anodes was dissimilar for the investigated crystallographic planes, on average it was tensile. Other measurements include X-ray diffraction, nanoindentation and SEM microscopy. As the anode layer microstructures are complex (includes bi-layer alternate phases), nondestructive characterisation of residual strain, e.g. using neutron diffraction, provides a useful measure of through thickness strain profile without altering the stress field in the SOFC electrode assembly.

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Section: Comparison With Previous Studiesmentioning

confidence: 99%

Neutron Diffraction Residual Strain Measurements of Molybdenum Carbide-Based Solid Oxide Fuel Cell Anode Layers with Metal Oxides on Hastelloy X

et al. 2017

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“…Tranter et al [15] used the Zerilli-Armstrong material model to simulate FOD using LS-DYNA and showed that the finite element (FE) model could simulate various impact processes. Lin et al [16] simulated FOD impacts at 0°and at 45°angles on previously laser shock processing treated aerofoil specimens and compared the results from the simulation with those measured experimentally using high-energy synchrotron X-ray diffraction. Their results showed that the Johnson-Cook material model could be effective in predicting the dynamic response of laser shock peened specimens.…”

Section: Introductionmentioning

confidence: 99%

Foreign Object Damage Performance and Constitutive Modeling of Titanium Alloy Blade

Chen

et al. 2020

International Journal of Aerospace Engineering

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Foreign object damage (FOD) to fan blades has been identified as one of the main factors affecting the safety of aeroengine operation. Numerical simulations are an important means of studying FOD, but the selection of the material’s parameters in modeling is a key problem. In this work, a FOD test was carried out with titanium alloy blades as the sample, and the damage types suffered by the blades subjected to impacts from foreign objects under different conditions are obtained. A blade material test was carried out to obtain its parameters in terms of the Johnson-Cook material model, and finite element models of the impacting foreign objects are constructed. When comparing the test results with the simulated results, excellent correlation between them is found.

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“…Martensitic transformation is also sensitive to the strain rate . Laser induced shock is a newly developed method to deform the metallic material at ultra-high strain rates ( Ding and Ye, 2006;Lin et al, 2015;Montross et al, 2002;Peyre and Fabbro, 1995 ). In the laser shock process, a shock wave with high amplitude and short duration is generated through rapid expansion of high-temperature plasma induced by the interaction of a pulsed high-intensity laser beam and an absorption layer on the metallic target surface.…”

Section: Introductionmentioning

confidence: 99%

In-situ investigation of dynamic deformation in NiTi shape memory alloys under laser induced shock

Wang

Xia

et al. 2017

Mechanics of Materials

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The free surface particle velocity of NiTi target shocked with a pulsed laser beam was measured with a photonic Doppler velocimetry (PDV) system to study the dynamic deformation behavior of NiTi alloys at ultra-high strain rate of 10 6 ∼10 7 /s. Through the analysis of the particle velocity profiles, the shock wave intensity was found to have the influence on the process of austenite-martensite transformation. Theoretical analysis of shock wave propagation showed that the first plateau in the velocity profile was caused by martensitic transformation and the second plateau if existing is caused by the subsequent plastic yielding of shock induced martensite. Residual martensite of the NiTi, which exhibited as needlelike structures, was observed in the laser shocked region. Based on the present results, and the studies by Nemat-Nasser et al. (2005), Liao et al. (2012), and Wang et al. (2013), we concluded that laser induced shock can cause the martensitic transformation as long as the laser induced shock pressure reaches a critical value. The dynamic transition stress and the dynamic tensile strength of NiTi alloys were also determined from the experimentally measured surface velocity profile.

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Residual stresses due to foreign object damage in laser-shock peened aerofoils: Simulation and measurement

Cited by 41 publications

References 37 publications

Neutron Diffraction Residual Strain Measurements of Molybdenum Carbide-Based Solid Oxide Fuel Cell Anode Layers with Metal Oxides on Hastelloy X

Neutron Diffraction Residual Strain Measurements of Molybdenum Carbide-Based Solid Oxide Fuel Cell Anode Layers with Metal Oxides on Hastelloy X

Foreign Object Damage Performance and Constitutive Modeling of Titanium Alloy Blade

In-situ investigation of dynamic deformation in NiTi shape memory alloys under laser induced shock

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