Evolution of a laser shock peened residual stress field locally with foreign object damage and subsequent fatigue crack growth

Suraiya Zabeen, M. Preuss, P. J. Withers

    Research output: Contribution to journalArticle

    39 Citations (Scopus)
    19 Downloads (Pure)

    Abstract

    Foreign object damage (FOD) can seriously shorten the fatigue lives of components. On the other hand, laser shock peening improves fatigue life by introducing deep compressive residual stress into components. In this paper we examine how the non-uniform steep residual stress profile arising from FOD of laser peened aerofoil leading edges varies as a function of fatigue crack growth under high cycle fatigue and mixed high and low cycle fatigue conditions. The ballistic FOD impacts were introduced by impacting a cube edge head-on (at an angle of 0°) to the leading edge. The residual stress distributions have been mapped by synchrotron X-ray diffraction prior to cracking and subsequent to short (∼1 mm) and long (up to 6 mm) crack growth. The results suggest that the local residual stress field is highly stable even to the growth of relatively long cracks.
    Original languageEnglish
    Pages (from-to)216-226
    JournalActa Materialia
    Volume83
    Early online date22 Oct 2014
    DOIs
    Publication statusPublished - 15 Jan 2015

    Fingerprint

    Fatigue crack propagation
    Residual stresses
    Fatigue of materials
    Lasers
    Shot peening
    Ballistics
    Synchrotrons
    Compressive stress
    Airfoils
    Stress concentration
    Crack propagation
    Cracks
    X ray diffraction

    Keywords

    • Residual stress
    • Foreign object damage (FOD)
    • Fatigue crack growth
    • X-ray diffraction
    • Ti–6Al–4V

    Cite this

    Evolution of a laser shock peened residual stress field locally with foreign object damage and subsequent fatigue crack growth. / Zabeen, Suraiya; Preuss, M.; Withers, P. J.

    In: Acta Materialia, Vol. 83, 15.01.2015, p. 216-226.

    Research output: Contribution to journalArticle

    @article{a7c522f78bb2418abb4812e4293f9a0e,
    title = "Evolution of a laser shock peened residual stress field locally with foreign object damage and subsequent fatigue crack growth",
    abstract = "Foreign object damage (FOD) can seriously shorten the fatigue lives of components. On the other hand, laser shock peening improves fatigue life by introducing deep compressive residual stress into components. In this paper we examine how the non-uniform steep residual stress profile arising from FOD of laser peened aerofoil leading edges varies as a function of fatigue crack growth under high cycle fatigue and mixed high and low cycle fatigue conditions. The ballistic FOD impacts were introduced by impacting a cube edge head-on (at an angle of 0°) to the leading edge. The residual stress distributions have been mapped by synchrotron X-ray diffraction prior to cracking and subsequent to short (∼1 mm) and long (up to 6 mm) crack growth. The results suggest that the local residual stress field is highly stable even to the growth of relatively long cracks.",
    keywords = "Residual stress, Foreign object damage (FOD), Fatigue crack growth, X-ray diffraction, Ti–6Al–4V",
    author = "Suraiya Zabeen and M. Preuss and Withers, {P. J.}",
    year = "2015",
    month = "1",
    day = "15",
    doi = "10.1016/j.actamat.2014.09.032",
    language = "English",
    volume = "83",
    pages = "216--226",
    journal = "Acta Materialia",
    issn = "1359-6454",
    publisher = "Elsevier",

    }

    TY - JOUR

    T1 - Evolution of a laser shock peened residual stress field locally with foreign object damage and subsequent fatigue crack growth

    AU - Zabeen, Suraiya

    AU - Preuss, M.

    AU - Withers, P. J.

    PY - 2015/1/15

    Y1 - 2015/1/15

    N2 - Foreign object damage (FOD) can seriously shorten the fatigue lives of components. On the other hand, laser shock peening improves fatigue life by introducing deep compressive residual stress into components. In this paper we examine how the non-uniform steep residual stress profile arising from FOD of laser peened aerofoil leading edges varies as a function of fatigue crack growth under high cycle fatigue and mixed high and low cycle fatigue conditions. The ballistic FOD impacts were introduced by impacting a cube edge head-on (at an angle of 0°) to the leading edge. The residual stress distributions have been mapped by synchrotron X-ray diffraction prior to cracking and subsequent to short (∼1 mm) and long (up to 6 mm) crack growth. The results suggest that the local residual stress field is highly stable even to the growth of relatively long cracks.

    AB - Foreign object damage (FOD) can seriously shorten the fatigue lives of components. On the other hand, laser shock peening improves fatigue life by introducing deep compressive residual stress into components. In this paper we examine how the non-uniform steep residual stress profile arising from FOD of laser peened aerofoil leading edges varies as a function of fatigue crack growth under high cycle fatigue and mixed high and low cycle fatigue conditions. The ballistic FOD impacts were introduced by impacting a cube edge head-on (at an angle of 0°) to the leading edge. The residual stress distributions have been mapped by synchrotron X-ray diffraction prior to cracking and subsequent to short (∼1 mm) and long (up to 6 mm) crack growth. The results suggest that the local residual stress field is highly stable even to the growth of relatively long cracks.

    KW - Residual stress

    KW - Foreign object damage (FOD)

    KW - Fatigue crack growth

    KW - X-ray diffraction

    KW - Ti–6Al–4V

    U2 - 10.1016/j.actamat.2014.09.032

    DO - 10.1016/j.actamat.2014.09.032

    M3 - Article

    VL - 83

    SP - 216

    EP - 226

    JO - Acta Materialia

    JF - Acta Materialia

    SN - 1359-6454

    ER -