Journal ArticleDOI
Fatigue life estimation of additively manufactured Ti-6Al-4V: sensitivity, scatter and defect description in Damage-tolerant models
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TLDR
In this paper , a numerical fatigue life model is built upon which the sensitivity to input parameters, short crack growth mechanics, defect morphology and location for LPBF-produced Ti-6Al-4V is established.About:
This article is published in Acta Materialia.The article was published on 2022-07-01. It has received 10 citations till now. The article focuses on the topics: Paris' law & Damage tolerance.read more
Citations
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Orientation-dependent fatigue assessment of Ti6Al4V manufactured by L-PBF: Size of surface features and shielding effect
TL;DR: In this article , a Fracture Mechanics-based model based on measurable roughness parameters was employed for the prediction of the fatigue properties in both the finite life and endurance limit regions.
Journal ArticleDOI
Low cycle fatigue life prediction of titanium alloy using genetic algorithm-optimized BP artificial neural network
TL;DR: In this article , a genetic algorithm-optimized back-propagation artificial neural network (GABP-ANN) was used to predict the low cycle fatigue (LCF) life of titanium alloy structural parts.
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High‐cycle and very‐high‐cycle fatigue behavior at two stress ratios of Ti‐6Al‐4V manufactured via laser powder bed fusion with different surface states
TL;DR: In this paper , the effects of surface roughness and stress ratio on fatigue performance of surface-polished laser powder bed fusion (L-PBF) Ti-6Al-4V was investigated.
Journal ArticleDOI
Coupling effects of microstructure and defects on the fatigue properties of laser powder bed fusion Ti-6Al-4V
Zhao Le Qu,Z.-F. Zhang,Y.K. Zhu,R. Liu,S.L. Lu,Sj Li,Q.Q. Duan,B.N. Zhang,Jürgen Eckert,Z.F. Zhang +9 more
TL;DR: In this article , the fatigue properties and microstructure of laser powder bed fusion (LPBF) Ti-6Al-4V were studied, and it was found that there is an anomalous trade-off relationship between the hardness and the high-cycle fatigue properties.
Journal ArticleDOI
High cycle fatigue strength of hot isostatically pressed and chemically etched laser powder bed fusion produced Ti-6Al-4V
TL;DR: In this paper , the effect of chemical etching with an HF-HNO3 solution has on the fatigue strength of laser powder bed fusion-produced Ti-6Al-4V when immersed for different time intervals (5, 15 and 90 minutes).
References
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Journal ArticleDOI
A Path Independent Integral and the Approximate Analysis of Strain Concentration by Notches and Cracks
TL;DR: In this paper, an integral is exhibited which has the same value for all paths surrounding a class of notches in two-dimensional deformation fields of linear or non-linear elastic materials.
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Yielding of steel sheets containing slits
TL;DR: In this article, a relation between extent of plastic yielding and external load applied was investigated, and panels containing internal and edge slits were loaded in tension and lengths of plastic zones were measured.
Journal ArticleDOI
Prediction of non propagating cracks
TL;DR: In this paper, an explanation for non propagating fatigue cracks is presented based on the criterion that once the value of a particular strain intensity factor reduces to the threshold value for the material the crack should stop.
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Densification behavior, microstructure evolution, and wear performance of selective laser melting processed commercially pure titanium
Dongdong Gu,Dongdong Gu,Yves-Christian Hagedorn,Wilhelm Meiners,Guangbin Meng,Rui João Santos Batista,Konrad Wissenbach,Reinhart Poprawe +7 more
TL;DR: In this article, a comprehensive study of the densification behavior, phase and microstructure development, hardness and wear performance of commercially pure Ti parts processed by selective laser melting (SLM) is presented.
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Mechanisms of fatigue crack propagation in metals, ceramics and composites: Role of crack tip shielding☆
TL;DR: In this paper, the authors examined the effect of crack tip shielding on fatigue crack propagation behavior in metals, composites and ceramics, and showed that, whereas crack-tip shielding can provide a potent means of enhancing resistance to crack growth, such extrinsic toughening mechanisms can result in the apparently anomalous behavior of small cracks and to the susceptibility of brittle materials to fatigue failure.