Evaluation and analysis of residual stresses due to foreign object damage

Duó, P.; Liu, Junli; Dini, Daniele; Golshan, M.; Korsunsky, Alexander M.

doi:10.1016/j.mechmat.2006.05.003

Cited by 48 publications

(13 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, despite the low velocity range analysed in this paper, a dynamic analysis will be carried out since our goal is to be able to predict not only the residual stresses, but also the size of the dent created as a function of the impact velocity. Dynamic modelling of impact events have been implemented in the study of FOD (Duó et al, 2007;Frankel et al, 2012). These, however, are significantly more complex and evidence of strain-rate hardening, thermal softening, and material "tearing" effects have been reported (Nowell et al, 2003) Nevertheless, some of the techniques used to model FOD are used here to model handling and service damage.…”

Section: Model Geometry and Boundary Conditionsmentioning

confidence: 99%

“…As shown previously, both have a competing influence on the crack growth of: i) the stress concentration due to the presence of the geometrical notch; and ii) the residual stress field, particularly the compressive zone. Duó et al (2007) have used laboratory and synchrotron X-ray diffraction (XRD) to measure the residual stresses caused by FOD. Although good qualitative agreement between measured residual stresses and those modelled by finite element simulation, a discrepancy was found between the predicted and measured stress magnitudes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterisation of handling and service surface damage on Nickel alloys caused by low velocity impacts of blunt hard objects

Fleury

Nowell

Sui

et al. 2017

Mechanics of Materials

Self Cite

View full text Add to dashboard Cite

This paper presents a characterisation of surface damage, more specifically dents, caused by low velocity impacts of blunt objects on RR1000 Nickel superalloys. These are representative of damage that may occur during handling and service of components during manufacturing or maintenance. The characterisation of dents produced in laboratory tests is carried out both in terms of their geometry and the residual stresses the damage. A finite element model is presented and the results are validated in terms of dent geometry produced for different impact velocities. The stress distribution predicted by the numerical model is also compared with experimentally measured stresses via X-ray diffraction for validation of the model. The residual stresses obtained from the finite element (FE) model and their implications to fatigue and crack propagation lives are also discussed here.

show abstract

Section: Model Geometry and Boundary Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterisation of handling and service surface damage on Nickel alloys caused by low velocity impacts of blunt hard objects

Fleury

Nowell

Sui

et al. 2017

Mechanics of Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…The macroscopic damage morphology of each FOD was observed. According to the previously reported classifications of FOD damage [9,10], it was found that the main damage types suffered by the blades were "nicked," "dented," "torn," and "piece out," as shown in Figure 7. "Nicked" implies a relatively short, sharp indentation, usually occurring at the leading or trailing edges of the blade, where a small amount of material is removed.…”

Section: Resultsmentioning

confidence: 97%

“…To address this, stress relief annealing treatment can strengthen the fatigue strength of a blade [9]. However, due to the small size of FOD and the large gradient of the residual stress, experimental measurements of the latter are currently not very accurate [10]. Therefore, numerical simulation techniques are needed to study the residual stresses generated by FOD.…”

Section: Introductionmentioning

confidence: 99%

Foreign Object Damage Performance and Constitutive Modeling of Titanium Alloy Blade

Chen

et al. 2020

International Journal of Aerospace Engineering

View full text Add to dashboard Cite

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.

show abstract

“…[17] Overall, it would appear that these proposed methods all facilitate the prediction of fatigue strength degradation caused by FOD. However, from amongst the small number of studies, [5,[18][19][20][21] only a few have actually investigated FOD-induced residual stress. Consequently, because residual stress may depend upon various factors, it cannot presently be systematically assessed.…”

Section: Introductionmentioning

confidence: 99%

Effect of impact velocity and impact angle on residual stress fields caused by foreign object damage

Matsunaga

2020

Strain

View full text Add to dashboard Cite

In order to study the residual stress induced by foreign object damage (FOD), the distribution of residual stress caused by the impact of a hard spherical body was measured via the sin2ψ technique, using synchrotron X‐ray. A steel sphere was impacted onto a flat surface of a Ti‐6Al‐4V alloy from an angle of either 90° or 45°, at a velocity of 180 m/s. The same sphere was also quasi‐statically pressed into the surface. In the cases of right‐angled impact and quasi‐static indentation, a compressive residual stress was extensively distributed inside the generated crater. No remarkable difference in residual stress distribution was noted between the dynamic case and the quasi‐static case. However, at an impact angle of 45°, a tensile residual stress that is more detrimental to fatigue strength was widely distributed inside the crater. Outside of the craters, tensile stress was generally observed in all cases.

show abstract

Evaluation and analysis of residual stresses due to foreign object damage

Cited by 48 publications

References 10 publications

Characterisation of handling and service surface damage on Nickel alloys caused by low velocity impacts of blunt hard objects

Characterisation of handling and service surface damage on Nickel alloys caused by low velocity impacts of blunt hard objects

Foreign Object Damage Performance and Constitutive Modeling of Titanium Alloy Blade

Effect of impact velocity and impact angle on residual stress fields caused by foreign object damage

Contact Info

Product

Resources

About