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| Sultan, Nabil; Cochonat, Pierre; Bourillet, Jean-francois; Cayocca, Florence. |
| This article presents a methodology developed to evaluate the instability of submarine slopes that extend over a large area. Special attention was paid to (1) the complex geometry (bathymetry) and the expanse of the slope, (2) the heterogeneity of the sediment, and (3) the distribution of the pore pressure. The safety factor was considered as a spatially varying quantity. The General Formulation (GLE, Fredlund and Krahn 1977), which fully satisfies equilibrium conditions, was used for evaluating the stability of the marine slope. The submarine slope failure, which occurred on 16 October 1979 during the construction of the new Nice airport, was studied in order to test the developed model. Geotechnical parameters were taken from experimental tests carried... |
| Tipo: Text |
Palavras-chave: Shear strength; Slope stability; Safety factor; Marine sediment; Finite element; Finite difference; Failure. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/publication-698.pdf |
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| Lechat, Céline. |
| Faced with the need to exploit off-shore oil fields at ever increasing depths, lighter replacements are being considered for the standard steel cable mooring systems used for platforms. This study considers the mechanical behaviour of synthetic ropes made of two different materials: PET and PEN. The first is already used in ropes to replace steel, and the second could be a potential competitor. A multi-scale study, involving mechanical tests (mainly tensile, creep and cyclic loading) has been carried out on assemblies of various sizes, from ropes of several hundreds kN breaking load to their smallest components: filaments. Strong correlations were found between the quasi-static behaviour of assemblies and the behaviour of filaments, which in itself is... |
| Tipo: Text |
Palavras-chave: Failure; Fatigue; Creep; Tensile loading; Rope; Yarn; Fibre; PEN; PET; Rupture; Fatigue; Fluage; Traction; Câble; Yarn; Fibre; PEN; PET. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/these-4312.pdf |
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| Das, Dilip K.. |
| The Doha Round of multilateral trade negotiations (MTNs) has proved to be egregiously problem-prone. Due to deep dissension among WTO members it had to be suspended, and efforts to revive it have so far not succeeded. Although the mercantilist mindset of the participants has been frequently blamed for the consistently tardy progress of negotiations, there is more to the situation than just a mindset. This article methodically analyzes the various steps taken since the launch of the Doha Round and dwells on the challenges faced during the MTNs. Time and again negotiating members and country groups publicized their constructive intentions, and a series of official pronouncements provided a surfeit of evidence of commitment to the objectives of the Doha... |
| Tipo: Journal Article |
Palavras-chave: Doha; Failure; Multilateral negotiations; Progress; International Relations/Trade. |
| Ano: 2008 |
URL: http://purl.umn.edu/6319 |
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| minteh, mustapha. |
| Abstract: Maintenance cost of agricultural machines accounts for about 10 to 15% of total production cost and this tends to increase as the machine gets older. To stabilized this already high cost, agricultural machinery maintenance engineers chose Preventive Maintenance (PM) strategy. However, the latter may not produce the desired results especially when machines are used under different operating context. In this paper, an assessment of the effects of PM strategy on reliability indicators (failure rate, mean time between failures (MTBF), mean time to repair (MTTR) and mechanical availability) of a rice combine harvester Mitsubishi TVR96 working under the operating context of Pacharr rice fields in The Gambia, is discussed. These reliability indicators... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Assessment; Impact; Preventive maintenance; Reliability indicators; Failure; Rice combine harvester.. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4855 |
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