Carbon Fibre Reinforced Poly(vinylidene Fluoride)

The demand for oil in the world is expected to rise by 1.7% in the fourth quarter of 2012 compared to fourth quarter of 2011. In order to cater for this increasing demand, the oil and gas industry continues to explore and develop deep-sea oilfields where oil and gas risers and pipelines encounter extreme conditions. The combination of high pressure and temperature with aggressive media which contains of hydrocarbon, alkanes, acids, sour gas (H2S), and CO2, etc., requires superior material performance and durability. Conventional engineering materials, such as steel are heavy and require corrosion protection, which are currently used as risers, flowlines and choke and kill lines have reached their limits. This is because of the poor chemical resistance and damage tolerance and the high costs involved in supporting their own weight. This has motivated the industry to explore non-corroding and lighter alternative materials if deeper sea reservoirs are to be explored. One such material that has the potential to overcome such limitations thus enabling new design strategies for cost effective, weight and energy saving materials is fibre reinforced composites. The remarkable properties and the tailorability of fibre reinforcement along load paths to achieve excellent performance of the composites is an attribute not found in any other material. The aim of this research was to manufacture novel carbon fibre reinforced polyvinylidene fluoride (PVDF) composites by incorporating atmospheric plasma fluorination of the carbon fibres. Powder impregnation method was adapted for the manufacturing of continuous unidirectional (UD) carbon fibre reinforced PVDF composite prepregs. The resulting composite laminates were characterised through various macro-mechanical tests. The impact of atmospheric plasma fluorination of the carbon fibre on the tensile, flexural, short beam shear and tearing properties of the UD composites were investigated to determine whether the improvements observed in the single fibre model composite can be translated to macro-level composite laminates. Apart from this, the impact of combining both fibre and matrix modifications on the composite were studied and the preliminary results on micro-mechanical scale are presented. Finally, composite pipe structures, made by filament winding technique using unidirectional carbon fibre reinforced PVDF composite prepregs onto a pure PVDF liner were fabricated, and characterised with respect to its mechanical properties

Quantification of potential macroseismic effects of the induced seismicity that might result from hydraulic fracturing for shale gas exploitation in the UK

The furore that has arisen in the UK over induced microseismicity from ‘fracking’ for shale gas development, which has resulted in ground vibrations strong enough to be felt, requires the urgent development of an appropriate regulatory framework. We suggest that the existing regulatory limits applicable to quarry blasting (i.e. peak ground velocities (PGV) in the seismic wavefield incident on any residential property of 10 mm s<sup>−1</sup> during the working day, 2 mm s<sup>−1</sup> at night, and 4.5 mm s<sup>−1</sup>1 at other times) can be readily applied to cover such induced seismicity. Levels of vibration of this order do not constitute a hazard: they are similar in magnitude to the ‘nuisance’ vibrations that may be caused by activities such as walking on wooden floors, or by large vehicles passing on a road outside a building. Using a simple technique based on analysis of the spectra of seismic S-waves, we show that this proposed daytime regulatory limit for PGV is likely to be satisfied directly above the source of a magnitude 3 induced earthquake at a depth of 2.5 km, and illustrate how the proposed limits scale in terms of magnitudes of induced earthquakes at other distances. Previous experience indicates that the length of the fracture networks that are produced by ‘fracking’ cannot exceed 600 m; the development of a fracture network of this size in one single rupture would correspond to an induced earthquake c. magnitude 3.6. Events of that magnitude would result in PGV above our proposed regulatory limit and might be sufficient to cause minor damage to property, such as cracked plaster; we propose that any such rare occurrences could readily be covered by a system of compensation similar to that used over many decades for damage caused by coal mining. However, it is highly unlikely that future ‘fracking’ in the UK would cause even this minor damage, because the amount of ‘force’ applied in ‘fracking’ tends to be strictly limited by operators: this is because there is an inherent disincentive to fracture sterile overburden, especially where this may contain groundwater that could flood-out the underlying gas-producing zones just developed. For the same reason, seismic monitoring of ‘fracking’ is routine; the data that it generates could be used directly to police compliance with any regulatory framework. Although inspired by UK conditions and debates, our proposals might also be useful for other regulatory jurisdictions

A Survey on Experimental Performance Evaluation of Data Distribution Service (DDS) Implementations

The Data Distribution Service (DDS) is a widely used communication specification for real-time mission-critical systems that follow the principles of publish-subscribe middleware. DDS has an extensive set of quality of service (QoS) parameters allowing a thorough customisation of the intended communication. An extensive survey of the performance of the implementations of this communication middleware is lacking. This paper closes the gap by surveying the state of the art in performance of various DDS implementations and identifying any research gaps that exist within this domain.Comment: 20 pages and 1 figur

The Value of Balanced Growth for Transportation

The Ohio Balanced Growth Program is a voluntary, locally-driven, incentive-driven program which aims to encourage compact, nodal development patterns. The Ohio Department of Transportation provided support for this research to evaluate potential links between Balanced Growth-type policy, land use and development patterns, and transportation benefits. A literature review was completed to understand the existing body of knowledge regarding the connection between policy, land use, and transportation. This included a scan of Balanced Growth-type programs across the US. Twenty-six US Metropolitan Statistical Areas (MSAs) were selected and reviewed for general geographic and policy characteristics. Land use and transportation outcome data were examined via scatterplot and linear regression across all of the MSAs. The results were evaluated broadly in light of policy frameworks in effect in each MSA, by categorizing land use policy into “tiers” based on voluntary vs. mandatory provisions, and applicability to private and public investment. Finally, a policy review was completed to understand the potential benefits of policy change at the state, regional, and local agency levels. Significant relationships were found between land use patterns, measured in terms of a sprawl composite index, and transportation outcomes for freeway lane miles, hours of delay, vehicle miles traveled, emissions, and safety. MSAs with “Tier 3” policies (mandatory, rigorous policy affecting both public and private investment) clustered together on both axes (transportation outcomes and sprawl); and MSAs within states clustered together along the sprawl score axis. Otherwise, there was no apparent pattern in the location of policy tiers along either the transportation or land use axes. Possible alternative explanations that could be evaluated in the future include overall transportation investment levels; inter-state and inter-regional travel demand; size and shape of the MSA; and market, economic and social factors. Conclusions included policy recommendations for ODOT in supporting compact, nodal development at the local, regional and state levels. Future study recommendations include pursuing future data collection, monitoring and evaluation over time

The Value of Balanced Growth for Transportation

The Ohio Balanced Growth Program is a voluntary, locally-driven, incentive-driven program which aims to encourage compact, nodal development patterns. The Ohio Department of Transportation provided support for this research to evaluate potential links between Balanced Growth-type policy, land use and development patterns, and transportation benefits. A literature review was completed to understand the existing body of knowledge regarding the connection between policy, land use, and transportation. This included a scan of Balanced Growth-type programs across the US. Twenty-six US Metropolitan Statistical Areas (MSAs) were selected and reviewed for general geographic and policy characteristics. Land use and transportation outcome data were examined via scatterplot and linear regression across all of the MSAs. The results were evaluated broadly in light of policy frameworks in effect in each MSA, by categorizing land use policy into “tiers” based on voluntary vs. mandatory provisions, and applicability to private and public investment. Finally, a policy review was completed to understand the potential benefits of policy change at the state, regional, and local agency levels. Significant relationships were found between land use patterns, measured in terms of a sprawl composite index, and transportation outcomes for freeway lane miles, hours of delay, vehicle miles traveled, emissions, and safety. MSAs with “Tier 3” policies (mandatory, rigorous policy affecting both public and private investment) clustered together on both axes (transportation outcomes and sprawl); and MSAs within states clustered together along the sprawl score axis. Otherwise, there was no apparent pattern in the location of policy tiers along either the transportation or land use axes. Possible alternative explanations that could be evaluated in the future include overall transportation investment levels; inter-state and inter-regional travel demand; size and shape of the MSA; and market, economic and social factors. Conclusions included policy recommendations for ODOT in supporting compact, nodal development at the local, regional and state levels. Future study recommendations include pursuing future data collection, monitoring and evaluation over time

Does Scenic Make Cents?

The stretch of California Route One (Highway 1) from the City of San Luis Obispo reaching north to the Monterey County line is one of the most scenic drives in the United States. This stretch of highway is a destination in its own right; so much so, the San Luis Obispo North Coast Scenic Byway is federally designated as an All-American Road, the highest scenic designation of any road or highway in the nation. There has been a history for funding the preservation and enhancement of these roads; however, it was removed in 2012. Even with the lack of current funding opportunities, the San Luis Obispo Council of Governments (SLOCOG) continues to recognize the importance of the corridor in attracting valuable tourism revenue thus commissioning this update and economic analysis. Through the economic analysis it was found that visitor spending in the byway region increased by 23% from over $500 million in 2006 to almost$656 million in 2012. In 2012, visitor spending related associated with scenic recognition and enhancement projects along the corridor was about $217,000 in direct revenue. As a result of research, outreach, and data analysis, this project did find that being scenic does make “cents.

Globalisation and its Impacts on Indian Economy

Not availabl

Federal Register

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii

Federal Register

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii

Federal Register

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii