Zobrazeno 1 - 10
of 20
pro vyhledávání: '"J. W. Hancock"'
Autor:
Steil, J. W. Hancock
Publikováno v:
The British Medical Journal, 1890 Oct . 2(1556), 955-956.
Externí odkaz:
https://www.jstor.org/stable/20240670
Autor:
C.S. Wiesner, J. W. Hancock, Robert A. Ainsworth, Noel P. O’Dowd, R.E. Dolby, F.M. Burdekin, I. Milne
Publikováno v:
International Journal of Pressure Vessels and Piping. 82:496-508
An assessment methodology put forward by BNFL Magnox Generation to take account of effects of constraint and dose attenuation in determining the margin between onset of upper shelf temperature (OUST) and normal steady state service temperature has be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d3d647795f621026969211b7464f487
https://doi.org/10.1016/j.ijpvp.2004.11.003
https://doi.org/10.1016/j.ijpvp.2004.11.003
Autor:
J. W. Hancock, I. J. MacLennan
Publikováno v:
Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences. 451:757-777
The loss of crack tip constraint leads to enhanced resistance to ductile tearing and cleavage. However, current defect assessment schemes use lower bound toughness obtained from highly constrained testpieces. Although this approach is safe, it is con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0035ae0ca6a5ce9abf5a2e7b63e73fb
https://doi.org/10.1098/rspa.1995.0154
https://doi.org/10.1098/rspa.1995.0154
Autor:
J. W. Hancock, C. Betegón
Publikováno v:
Journal of Applied Mechanics. 58:104-110
Plane-strain elastic-plastic crack-tip fields have been modeled with modified boundary layer formulations based on the first two terms K and T, of the elastic field. These formulations match the appropriate full field solutions. Compressive T stresse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e1e0dacc0b2186f2c505633e979fc16
https://doi.org/10.1115/1.2897135
https://doi.org/10.1115/1.2897135
Autor:
J. W. Hancock, J.D.G Sumpter
Publikováno v:
International Journal of Pressure Vessels and Piping. 45:207-221
Experimental data are presented showing marked increases of J c with decreasing a W in both tension and bending in HY80 weld metals. The results are discussed in terms of elastic-plastic finite element studies by Al-Ani and Hancock. These authors hav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4e66500efed097128ea28fdd35b9b85
https://doi.org/10.1016/0308-0161(91)90093-h
https://doi.org/10.1016/0308-0161(91)90093-h
Publikováno v:
Fracture of Nano and Engineering Materials and Structures ISBN: 9781402049712
Within the scope of constraint based fracture mechanics the near tip fields are characterised with two parameters that capture the level of crack tip loading and constraint (Betegon and Hancock [1], O’Dowd and Shih [2]). Constraint arguments have b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba833682d2fda617e8845e3c6515ab42
https://doi.org/10.1007/1-4020-4972-2_294
https://doi.org/10.1007/1-4020-4972-2_294
Publikováno v:
AIP Conference Proceedings.
One of the most significant developments in EMAT operation is the incorporation of phased array techniques. Phased array EMATs enable electronic beam steering and focusing while operating with temporally short pulses for good range resolution. Using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4238a966bedf47c40b7b2953c3766aa8
https://doi.org/10.1063/1.2902747
https://doi.org/10.1063/1.2902747
Publikováno v:
IUTAM Symposium on Nonlinear Analysis of Fracture ISBN: 9789401063791
The stress field close to a crack tip in an elastic isotropic solid can be expressed as an asymptotic expansion following Williams (1957): $$ {{\sigma }_{{ij}}}(r,\theta ) = {{A}_{{ij}}}(\theta ){{r}^{{ - \frac{1}{2}}}} + {{B}_{{ij}}}(\theta ) + {{C}
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::369e7a260d87461d2a964fe16d6393bc
https://doi.org/10.1007/978-94-011-5642-4_3
https://doi.org/10.1007/978-94-011-5642-4_3
Autor:
J W Hancock
The loss of constraint, and subsequent enhanced toughness of short crack geometries evolves from small scale yielding and the non-singular component of crack tip stress field denoted T. Transitions from deeply cracked to shallow crack behaviour are i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de8915777478f320cf42fb74f8a94f27
https://doi.org/10.1533/9780857093226.1.24
https://doi.org/10.1533/9780857093226.1.24
Autor:
J. W. Hancock
Publikováno v:
Topics in Fracture and Fatigue ISBN: 9781461277262
The mechanics and mechanisms of ductile fracture are reviewed, emphasizing the effect of multi-axial states of stress on the mechanisms of hole nucleation, growth, and coalescence. This provides a basis for a discussion of crack extension by ductile
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46d614c0a03dc43ed40a6fbfe1dd4b0f
https://doi.org/10.1007/978-1-4612-2934-6_3
https://doi.org/10.1007/978-1-4612-2934-6_3