journal article·2019-09

Inverse determination of the fatigue Strain Energy Density control radius for conventionally and additively manufactured rounded V-notches

M. Benedetti, C. Santus, F. Berto

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Abstract

Abstract The Strain Energy Density (SED) fatigue criterion is based on a material control radius. The value of this length is therefore required for an accurate assessment of the fatigue strength of any, especially severely, notched components. The singularity-based control radius is initially obtained by considering the hypothetical perfectly sharp V-notched specimen. The effect of the notch radius on the inverse search is then investigated with numerical simulations, and a new analytical procedure is introduced for the determination of the (actual) control radius. This procedure is applied to the experimental data of three metal alloys with different load ratios and manufacturing conditions.
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Research context

OpenAlex topics: Fatigue and fracture mechanics · High Temperature Alloys and Creep · Welding Techniques and Residual Stresses

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (46)

Show source-provided references
1. Über die Berücksichtigung der Spannungskonzentration bei Festigkeitsberechnungen
2. Neuber · 1985
3. Field effects in fatigue crack initiation: long life fatigue strength10.1115/1.2912768 ↗
4. Beltrami · 1885
5. Strain-energy-density factor applied to mixed mode crack problems10.1007/BF00035493 ↗
6. Criterion of crack initiation and spreading10.1016/0013-7944(76)90089-8 ↗
7. A finite-volume-energy based approach to predict the static and fatigue behavior of components with sharp V-shaped notches10.1023/A:1013595930617 ↗
8. Fatigue strength of steel and aluminium welded joints based on generalised stress intensity factors and local strain energy values10.1007/s10704-005-4043-3 ↗
9. Experiences and recommendations for numerical analyses of notch stress intensity factor and averaged strain energy density10.1016/j.engfracmech.2016.08.012 ↗
10. Fatigue assessment of web-stiffened corners in plated structures by local approaches10.1080/09377255.2018.1441781 ↗
11. State-of-the-art review on the local strain energy density concept and its relation to the J -integral and peak stress method10.1111/ffe.12231 ↗
12. Averaged strain energy density estimated rapidly from the singular peak stresses by FEM: cracked bars under mixed-mode (I+III) loading10.1016/j.engfracmech.2016.03.040 ↗
13. Some expressions for the strain energy in a finite volume surrounding the root of blunt V-notches10.1007/s10704-005-3943-6 ↗
14. Recent developments in brittle and quasi-brittle failure assessment of engineering materials by means of local approaches10.1016/j.mser.2013.11.001 ↗
15. Local strain energy density to predict mode II brittle fracture in Brazilian disk specimens weakened by V-notches with end holes10.1016/j.matdes.2014.12.037 ↗
16. Averaged strain energy density criterion to predict ductile failure of U-notched Al 6061–T6 plates under mixed mode loading10.1016/j.tafmec.2017.04.010 ↗
17. Brittle fracture assessment of engineering components in the presence of notches: a review10.1111/ffe.12379 ↗
18. SED criterion estimations of fracture loads in structural steels operating at lower shelf temperatures and containing u-notches10.1016/j.tafmec.2017.05.021 ↗
19. Energy-based approach for fracture assessment of several rocks containing U-shaped notches through the application of the SED criterion10.1016/j.ijrmms.2018.07.013 ↗
20. Multiaxial fatigue of V-notched steel specimens: a non-conventional application of the local energy method10.1111/j.1460-2695.2011.01585.x ↗
21. Multiaxial fatigue strength of severely notched cast iron specimens10.1016/j.ijfatigue.2014.01.013 ↗
22. Fatigue strength of severely notched specimens made of Ti-6Al-4V under multiaxial loading10.1111/ffe.12272 ↗
23. Fatigue lifetime evaluation of notched components: implementation of the control volume concept in a strain-based LCF criterion10.1016/j.tafmec.2017.07.001 ↗
24. Crack initiation life in notched steel bars under torsional fatigue: synthesis based on the averaged strain energy density approach10.1016/j.ijfatigue.2016.12.022 ↗
25. Local strain energy density for the fracture assessment of polyurethane specimens weakened by notches of different shape10.3221/IGF-ESIS.42.23 ↗
26. Frontiers of fracture and fatigue: some recent applications of the local strain energy density
27. Determination of the fatigue critical distance according to the Line and the Point Methods with rounded V-notched specimen10.1016/j.ijfatigue.2017.10.002 ↗
28. ASTM, Standard Test Method for Measurement of Fatigue Crack Growth Rates, ASTM E647 – 15; 2015. https://doi.org/10.1520/E0647-15.10.1520/E0647-15 ↗
29. A review of the volume-based strain energy density approach applied to V-notches and welded structures10.1016/j.tafmec.2009.10.001 ↗
30. Taylor · 2007
31. A unifying approach to estimate the high-cycle fatigue strength of notched components subjected to both uniaxial and multiaxial cyclic loadings10.1111/j.1460-2695.2004.00759.x ↗
32. A multiaxial high-cycle fatigue life evaluation model for notched structural components10.1016/j.ijfatigue.2015.07.010 ↗
33. On the combination of the critical distance theory with a multiaxial fatigue criterion for predicting the fatigue strength of notched and plain shot-peened parts10.1016/j.ijfatigue.2016.08.015 ↗
34. The Theory of Critical Distances as an alternative experimental strategy for the determination of KIc and ΔKth10.1016/j.engfracmech.2010.04.016 ↗
35. Applications of the theory of critical distances in failure analysis10.1016/j.engfailanal.2010.07.002 ↗
36. On the Point Method load-bearing capacity predictions in Al7075-T651 structural components containing stress risers10.1016/j.engfailanal.2012.07.008 ↗
37. The Theory of Critical Distances to estimate finite lifetime of notched components subjected to constant and variable amplitude torsional loading10.1016/j.engfracmech.2012.12.007 ↗
38. A novel reformulation of the Theory of Critical Distances to design notched metals against dynamic loading10.1016/j.matdes.2014.12.026 ↗
39. Assessing the integrity of steel structural components with stress raisers using the Theory of Critical Distances10.1016/j.engfailanal.2016.07.007 ↗
40. Experimental determination and sensitivity analysis of the fatigue critical distance obtained with rounded V-notched specimens10.1016/j.ijfatigue.2018.03.037 ↗
41. Mean stress and plasticity effect prediction on notch fatigue and crack growth threshold, combining the theory of critical distances and multiaxial fatigue criteria10.1111/ffe.12910 ↗
42. Notch fatigue and crack growth resistance of Ti-6Al-4V ELI additively manufactured via selective laser melting: a critical distance approach to defect sensitivity10.1016/j.ijfatigue.2018.12.020 ↗
43. Fracture assessment of sharp V-notched components under Mode II loading: a comparison among some recent criteria10.1016/j.tafmec.2016.02.001 ↗
44. Stress singularities resulting from various boundary conditions in angular corners of plates in extension10.1115/1.4010553 ↗
45. On the definition of elastic strain energy density in fatigue modelling10.1016/j.ijfatigue.2018.12.011 ↗
46. Low- and high-cycle fatigue resistance of Ti-6Al-4V ELI additively manufactured via selective laser melting: mean stress and defect sensitivity10.1016/j.ijfatigue.2017.10.021 ↗