1,721,019 research outputs found
Effect of ablative and non-ablative Laser Shock Peening on AA7075-T651 corrosion and fatigue performance
No full textThe fatigue performance from pre-corroded pits was studied for laser shock peening of aluminium alloy AA7075-T651 (UNS A97075) with and without a protective ablation layer. Surface and microstructural characterisation showed laser shock peening generated high residual stress fields of up to –400 MPa, limited hardness increase, and moderate surface roughness increase. The laser shock peened specimens were exposed to 3.5 wt.% sodium chloride solution for different levels of galvanostatic control. The compressive residual stresses did not significantly affect the corrosion behaviour, corrosion pit morphology or pit depth. Laser-shock-peening-induced surface roughness was shown to have the most detrimental impact on corrosion performance. Fatigue testing of pre-corroded AA7075-T651 showed pits act as stress concentrations, causing cracks to initiate shortly after dynamic loading, and causing a reduction of at least 50% of its fatigue life. The laser shock peening markedly increased fatigue life, by up to 400% compared to corroded untreated AA7075-T651, due to the residual stresses effectively counteracting the stress concentrations produced by these pits. Laser shock peened AA7075-T651, that suffers subsequent pitting corrosion, can be expected to still have fatigue performance and a lifetime equivalent or better than uncorroded unpenened AA7075-T651
Dataset for the publication: 'Effect of ablative and non-ablative laser shock peening on AA7075-T651 corrosion and fatigue performance'
No full textJournal article dataset to support article "Effect of ablative and non-ablative Laser Shock Peening on AA7075-T651 corrosion and fatigue performance" in the journal "Material Science and Technology". The dataset contains
Vicker hardness measuremnets
LSP sample roughness measurements
AA7075 second hole results (residual stress measurements)
Ablative tafel plot all
All OCP graph origin
Combined hole drilling results
CRack propagation data all#
Galvanostatic test comparisons
Initiation propagation ratio
Residual stresses in Origin
S-N curve all data
XRD data</span
Data for figures in "Low cycle fatigue life prediction in shot-peened components of different geometries – Part I Residual stress relaxation"
No full textThis dataset reports data for the figures published in:
C. You, M. Achintha, K.A. Soady, N. Smyth, M.E. Fitzpatrick, P.A.S Reed "Low cycle fatigue life prediction in shot-peened components of different geometries – Part I Residual stress relaxation"
The excel files included in this dataset were named in terms of the number of figures. Each excel file refers to a figure in the paper.</span
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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