The role of residual stresses in the high cycle fatigue (HCF) strength of Ti-6Al-4V subjected to foreign object damage (FOD) was evaluated on simulated airfoil and rectangular geometries. Both real and simulated impacts were conducted using spherical projectiles launched at 300 m/s and quasi-static chisel indentation, respectively. The spheres used were 1 mm diameter glass beads while the quasi-static indentor had a radius of 1 mm. The airfoil specimens had leading edge (LE) radii of either 0.13 or 0.38 mm and were indented at 30 degree to the airfoil LE. The rectangular plates were 1.25 mm thick and were indented quasi-statically at 0 degree. All specimens subjected to FOD were subsequently tested in uniaxial HCF at a frequency of 350 Hz using a step loading procedure to determine the fatigue limit corresponding to 107 cycles. Before the HCF testing, half of the specimens were stress relief annealed to remove residual stresses. Results indicate that stress relief generally improves the fatigue limit stress, indicating that tensile residual stresses are present after both quasi-static or dynamic indentation. For the dynamic impacts, the craters formed have less influence on the fatigue strengths than that predicted from conventional notch fatigue analysis. Published by Elsevier Science Ltd.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Influence of residual stresses on high cycle fatigue strength of Ti-6Al-4V subjected to foreign object damage


    Beteiligte:
    Thompson, S.R. (Autor:in) / Ruschau, J.J. (Autor:in) / Nicholas, T. (Autor:in)

    Erschienen in:

    International Journal of Fatigue ; 23 , SUPPL. 1 ; S405-S412


    Erscheinungsdatum :

    2001


    Format / Umfang :

    8 Seiten, 23 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    High cycle fatigue limit stresses for airfoils subjected to foreign object damage

    Ruschau, J. / Thompson, S.R. / Nicholas, T. | Tema Archiv | 2003


    RESEARCH ON FATIGUE STRENGTH PREDICTION MODEL OF AERO-ENGINE BLADES SUBJECTED TO FOREIGN OBJECT DAMAGE

    Wang, L. F. / Liu, L. / Liu, C. et al. | British Library Conference Proceedings | 2021




    Prediction of High-Cycle Fatigue Performance of 1Cr11Ni2W2MoV Stainless Steel Plate after Foreign Object Damage

    Zhenhua Zhao / Lingfeng Wang / Chao Liu et al. | DOAJ | 2020

    Freier Zugriff