It is thought that putting the outside of a pipe in tension and the inside in compression should increase its resistance to being crushed by external forces. The belief comes from an experimental proof of concept study that shows that if a flat piece of material is bent, so that the outside is in tension and the inside is in compression, it has a greater resistance to impact and static forces applied to the outside of the curved surface. This patent applied for technique is the basis of the technology being marketed by start-up company Blast Absorption Systems limited.
Aims and objectives: The intention of this project is to ascertain whether an exterior in tension brings any benefit to extruded plastic pipes. Tension on the outside and compression on the inside could in theory be achieved by imposing a temperature difference between the inside and the outside of the pipe as it is extruded so that it solidifies on the inside first.
Deliverables Feasibility study and a report based on lab work, and if possible, experiments conducted in collaboration with a company that produces extruded plastic pipes and/or tubes or an institution that it able to produce them.
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