Search Results - "Lynch, S.P."

Some effects of alloy composition on stress corrosion cracking in Al–Zn–Mg–Cu alloys by Knight, S.P., Pohl, K., Holroyd, N.J.H., Birbilis, N., Rometsch, P.A., Muddle, B.C., Goswami, R., Lynch, S.P.

“…•A copper content of ∼0.6wt% may be overaged when the quench-rate is not too rapid.•Crack arrest markings spacings could be related to the hydrogen…”
Get full text

Correlations between intergranular stress corrosion cracking, grain-boundary microchemistry, and grain-boundary electrochemistry for Al–Zn–Mg–Cu alloys by Knight, S.P., Birbilis, N., Muddle, B.C., Trueman, A.R., Lynch, S.P.

“…► There is a good correlation between the intergranular SCC plateau velocities and the initial open-circuit potential of brittle intergranular fracture…”
Get full text

Quantification of Sensitization in AA5083-H131 via Imaging Ga-Embrittled Fracture Surfaces by BIRBILIS, N, ZHANG, R, LIM, M. L. C, GUPTA, R. K, DAVIES, C. H. J, LYNCH, S. P, KELLY, R. G, SCULLY, J. R

“…Sensitization of 5xxx series Al alloys involving precipitation of β phase (Mg2Al3) at grain boundaries was studied for different exposure times at 100°C upon…”
Get full text

Interpreting hydrogen-induced fracture surfaces in terms of deformation processes: A new approach by Lynch, S.P.

“…Observations of fracture surfaces and deformation beneath fracture surfaces produced by hydrogen-assisted cracking in pipelines steels, which were published in…”
Get full text

Comments on “A unified model of environment-assisted cracking” by Lynch, S.P.

“…The history of “unified” mechanisms for liquid–metal embrittlement, hydrogen embrittlement and stress-corrosion cracking is outlined, and issues and concerns…”
Get full text

Multifocality and multicentricity in breast cancer and survival outcomes by Lynch, S.P., Lei, X., Chavez-MacGregor, M., Hsu, L., Meric-Bernstam, F., Buchholz, T.A., Zhang, A., Hortobagyi, G.N., Valero, V., Gonzalez-Angulo, A.M.

“…The clinicopathological characteristics and the prognostic significance of multifocal (MF) and multicentric (MC) breast cancers are not well established. MF…”
Get full text

Progression markings, striations, and crack-arrest markings on fracture surfaces by Lynch, S.P.

“…Crack-front markings, with spacings ranging from the millimetre to the nanometre scale, are observed on fracture surfaces produced by a variety of fracture…”
Get full text

Low-energy intergranular fracture in Al–Li alloys by Pasang, T., Symonds, N., Moutsos, S., Wanhill, R.J.H., Lynch, S.P.

“…► Al–Li alloys have a propensity for brittle intergranular fracture. ► The use of Al–Li alloys in aerospace structures is therefore problematical. ► Lithium…”
Get full text

An unusual failure of a nickel-aluminium bronze (NAB) hydraulic valve by Byrnes, R.T., Lynch, S.P.

“…•Macroscopically brittle failure with intergranular fracture surfaces.•Slip lines and possibly fatigue striations on intergranular facets.•Features reproduced…”
Get full text

Five helicopter accidents with evidence of material and/or design deficiencies by Wanhill, R.J.H., Symonds, N., Merati, A., Pasang, T., Lynch, S.P.

“…► Survey of five helicopter accidents. ► Fractography essential in all cases. ► Quantitative Fractography (QF) and non-LEFM and LEFM analyses for two failures…”
Get full text

In situ measurement of corrosion on the nanoscale by Birbilis, N., Meyer, K., Muddle, B.C., Lynch, S.P.

“…Measurement of the electrochemical properties phase-by-phase on the nanoscale in real (commercial) alloys is critical to understanding the…”
Get full text

Concerning the anomalous brittle fracture behaviour of iridium by Lynch, S.P.

“…Possible reasons for the anomalous “cleavage” fracture in face-centred-cubic (fcc) iridium are discussed. The detailed characteristics of fracture suggest that…”
Get full text

Ductile-to-brittle fracture transitions in 8090 Al–Li alloys by Lynch, S.P, Muddle, B.C, Pasang, T

“…Variables influencing transitions from ductile transgranular fracture to brittle intergranular fracture in a very underaged 8090 Al–Li–Cu–Mg–Zr alloy plate, in…”
Get full text

Comments on “Intergranular fracture caused by trace impurities in an Al–5.5 mol% Mg alloy” by Lynch, S.P

“…Intergranular fracture at elevated temperatures in Al–5 wt.%Mg alloys is discussed and compared with embrittlement in other aluminium alloys, particularly with…”
Get full text

Fracture toughness of 2090 Al–Li–Cu extrusions with high and low hydrogen contents by Bennett, C.G, Lynch, S.P, Nethercott, R.B, Kerr, M, Sweet, E.D

“…The effects of different hydrogen contents, produced by variations in melting and casting procedures, on the short-transverse fracture toughness of 2090…”
Get full text

A fractographic study of hydrogen-assisted cracking and liquid-metal embrittlement in nickel by LYNCH, S. P

“…Metallographic and fractographic studies of crack growth in nickel polycrystals and single crystals in a number of environments are described. 'Brittle'…”
Get full text

Effects of alkali-metal impurities on fracture toughness of 2090 Al-Li-Cu extrusions by SWEET, E. D, LYNCH, S. P, BENNETT, C. G, NETHERCOTT, R. B, MUSULIN, I

“…The effects of alkali-metal impurity (AMI) content, temperature, and crack-mouth-opening displacement (CMOD) rate on the fracture toughness of 2090-T8 Al-Li-Cu…”
Get full text

Nuclear instrumentation for a soft X-ray detection system on a small satellite, CATSAT by Lynch, S.P., Geary, D.E., Forrest, D.J.

“…Nuclear instrumentation has been designed and tested for a large field of view soft X-ray sensor utilizing Si avalanche photodiodes (APDs). The instrument will…”
Get full text

Nuclear instrumentation for a soft X-ray detection system on a small satellite, CATSAT by Lynch, S.P., Geary, D.E., Forrest, D.J.

“…Nuclear instrumentation has been designed and tested for a large field of view soft X-ray sensor utilizing Si Avalanche Photodiodes (APDs). The instrument will…”
Get full text

Cardenolide content and thin-layer chromatography profiles of monarch butterflies, Danaus plexippus L., and their larval host-plant milkweed, Asclepias asperula subsp. capricornu (Woods.) Woods., in north central Texas by Martin, R.A, Lynch, S.P

“…Spectrophotometric determinations of the gross cardenolide content of Asclepias asperula plants in north central Texas indicated wide variation ranging from…”
Get full text