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Showing 1 to 20 of 1123 for “"pipe"”.
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Overtrawlability and Mechanical Damage of Pipe-in-Pipe
Pipe-in-pipes are widely used in the offshore industry. Traditionally, mechanical design of these systems with regards to fishing gear interaction has used the same approach as for single pipe systems. However, this approach is likely to result in a conservative design as the outer pipe is not …
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Experimental investigation of leakage-induced pipe erosion outside of pipe leaks
… in various different forms, and they form in pipes of all materials. It has been observed in numerous cases around the world that pipe material has been removed from the pipe surfaces adjacent to leaks in excavated failed water distribution pipe specimens. It was proposed by various …
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The 1259 Pipe Roll
The 1259 pipe roll contains accounts for most of the counties of England, covering the first full year of government by the reforming council set up by the baronial coup of 1258. The transcript of the roll makes up the bulk of this thesis. An unusually wide range of financial records, also mostly …
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Pipe Diffusion in Lithium-Fluoride
Made available in DSpace on 2015-05-12T17:12:22Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6100157.PDF: 2688214 bytes, checksum: 1c8733e4efd74ec9abe74eb5cc2558b8 (MD5) Previous issue date: 1960
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Transient Analysis in Pipe Networks
… conditions resulting in high pressures can cause pipe failures by damaging valves and fittings. In this study, basic equations for solving transient analysis problems are derived using method of characteristics. Two example problems are presented. One, a single pipe system which is solved by …
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Heat pipe effect in porous medium
… specific heat, porosity, and tortuosity on heat pipe performance in the vicinity of the waste package were observed. Computer simulations were carried out using TOUGH code on a Cray YMP-2 supercomputer; None of the fracture parameters affected the heat pipe performance except the mobility of the …
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Pipe Diagrams for Thompson's Group F
… of Thompson's Group F. We define the set of pipe diagrams and show that this set forms a group isomorphic to F. We use pipe diagrams to prove two theorems about giving a minimal representation for an arbitrary element of F.
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Acid resistance of sewer pipe concrete
The corrosion of sewer pipe concrete is a global problem, especially in warm climates in which biogenically generated sulphuric acid attacks the concrete and lowers its structural integrity. The Virginia Experimental Sewer is a ‘live sewer’ in South Africa for investigating acid resistance of …
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Acid resistance of sewer pipe concrete
… of concrete used in the manufacture of pipes to sulphuric acid environments encountered in sewers. A hydrochloric acid solution (pH of 1,00) simulates the attack on concrete sewer pipes at the average daily sewage level region and in severely corrosive sulphuric acid environments (pH of …
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Pipe circularity reformation via line heating
Fabrication of pipes requires the use of several manufacturing processes, such as bending, welding, drilling and wringing. However, in most cases the circular ends deviate from true circles and need reformation to be welded to angles. Currently the reformation is conducted by hammering and relies …
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Pipe circularity reformation via line heating
Thesis (S.M. in Naval Architecture and Marine Engineering)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2002.
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Slowly varying pipe flow of thixotropic fluids
… problems: unsteady flow in a slowly varying 3D pipe, and oscillating flow in a uniform cylindrical pipe. We consider two fluid models which exhibit interesting non-Newtonian behaviour: the viscous Moore-Mewis-Wagner (MMW)model, and the viscoplastic Houška model.In Chapters 2-6 we study unsteady …
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Pipe Inspection Automation with Mobile Ground Vehicles
… for the inspection of infrastructures like pipes, a locomotion unit and the way to control this locomotion unit and an imaging sensor in order to acquire information to make decisions. This is why three experiments are presented, 1) a robotic platform to scan pipes with collimated …
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Pipe-Soil Interaction on a Clay Seabed
Subsea pipelines form an integral part of the infrastructure associated with offshore oil and gas developments. These pipelines fulfill a range of functions from linking extraction wells to other subsea infrastructure to transporting products onshore, or to a central processing facility. Ancillary …
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Disaggregation of soil during slurry pipe jacking
Pipe jacking is an environmentally friendly technique for the installation of services and utilities, which leads to minimum disturbance during installation. It is an important construction method for urban environments where disruption to transport is expensive. The need to tunnel through varying …
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The mechanical behaviour of polyethylene pipe systems
The design of polyethylene (PE) pipelines for applications in the gas, water and chemical process industries has been based on data mainly obtained from stress rupture testing pipes only. In practice, installations are composed of both extruded pipe and injection moulded fittings which are joined …
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Blending of polyethylene materials for pipe applications
… reported on the stress rupture performance of pipes produced from selected polyethylene materials blended to a chosen MDPE pipe grade. The pipes were tested, notched or unnotched, at a single temperature of 80oC and at internal pressures designed to induce slit-mode failure. Results showed the …
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The flow of water in pipe sewers
Made available in DSpace on 2017-11-30T22:46:23Z (GMT). No. of bitstreams: 2 5959305.pdf: 4898044 bytes, checksum: 3775712071969e25d52824fed3bc51ad (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1899
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