2006 Washington DC : An Effective Barrier Pipe System for Contaminated Land
Author(s) : Christodoulou, Wilson, Hunter, Bowman
Polyethylene (PE) based and metallic pipe systems have been assessed for
their ability to stop petrol migrating through the pipe wall, fitting or joint and
into water contained within the pipe. A quantitative test was devised that is
capable of distinguishing between the different pipe systems. Plain PE pipe...
2006 Washington DC : Second Generation Skinned Pipes with Enhanced Fracture Resistance
Author(s) : Wood, Richards, Street, Muckle, Bowman
For the movement of fuel gas and water, plastics pipes are dominant in many
markets, and this success has been based on single material solid wall pipes.
There are now an expanding number of multi-layered plastics pipes, and
described here for the first time is the performance of the second-generation
of skinned pipe...
2001 Munich : Optimising the Performance of Ferrule Straps with PVC Pipes
Author(s) : Stokes, Potter, Metcalfe, Bowman, Graham
The response of three different forms of polyvinyl chloride (PVC) pipe has been explored
when the pipes had attached to them ferrule straps. Pipes were subjected to fluctuating
internal pressure (fatigue) loading at 20°C, and the lifetimes, location of any failures and
the types of failures recorded. Tests were made...
1995 Edinburgh : Enhancing the performance of Plastics Pipes, Fittings & Joints
Author(s) : Bowman
The many technologies associated with the production, installation and uses of
plastics pipes systems increase in their sophistication and diversity This paper
selects and reviews changes that have and are taking place with polyvinyl
chloride (PVC) and polyethylene (PE) pressure pipe systems designed for
1995 Edinburgh : High productivity butt fusion jointing of PE pipes
Author(s) : Cartwright, Troughton, Hinchcliff, Bowman, Jenkins
For the butt fusion joining of PE80 polyethylene pipes on site, long heat soak and
cooling times predominate in the United Kingdom and other countries. The
literature is reviewed to propose that these heat soak and cooling times can be
significantly reduced via the use of machines with verifiable, reduced short...
1992 Eindhoven : Procedures of Quantifying the Strength of Electrofusion Joints
Author(s) : Bowman,Medhurst, Portas
For two sample shapes different procedures have been examined as methods to quickly and quantitatively assess the strength of electrofusion joints. It is shown that the peel test, specified in BS7336, can be added to in order to obtain a quantitative measure of joint strength either using the % ductility on the...
1988 Bath : The Fatigue Behaviour of Medium Density Polyethylene Pipe Systems
Author(s) : Bowman
Elevated teqerature fatigue of MDPE pipe system showed socket and electrofusion fittings had similar fatigue lifetimes, while butt jointed pipes failed at repmducibly lower lifetimes. Extrapolatims to 2O'C preserved the raking in joint performance, although combined creep ad fatigre tests showed pure fatigue...
1985 York : The Failure of Butt Fusion Joints in Polyethylene Pipe Systems
Author(s) : Parmar, Bowman
The performance of aligned and controlled misaligned butt welds in 63 and 90mm polyethylene pipe systems was determined under fatigue loading conditions designed to induce brittle failure. The results showed a significant reduction in fatigue lifetime for butt welds having fractional misalignments greater than 10% of...