The tensioning stress field of a roll-tensioned circular saw blade was tested by Szymani and Mote (1974).
The multispot pressure tensioning process has its own advantages of automatic control and tensioning effect optimization (Li et al.
The natural frequency and tensioning stress field of a circular saw blade are two of the most important indicators for the tensioning effect.
Process parameters for a multispot pressure tensioning process
Many of these standards -- often taken directly from the press performance standards promulgated by IFRA (INCA-FIEJ Research Association) -- relate directly to tensioning systems, Machaj notes.
Goss is a good place to start tracing the evolution of tensioning systems.
In addition to running belt tensioning, on its four-high color press units, Goss also provides a device for controling tension on the outfeed.
The tensioning system was retrofitted on the paper's eight-unit Harris Cotrell V-15 press in August 1993.
With the tensioning system, waste is dramatically lower, he says.
Post tensioning is becoming increasingly popular for architectural or highly serviced buildings owing to the advantages it brings over reinforced concrete and it is also well suited to projects with exposed soffits or cement replacements.
Bseiso adds "We use post tensioning in buildings to give us a reduced floor thickness, which is much less than the conventional method." In belowgrade structures, this can mean less excavation, and in abovegrade structures, it can mean a reduced overall building height.
Bseiso adds, "Through post tensioning you lower the amount of steel used in a structure, namely rebar reinforcement, and you also lower the amount of concrete needed.
He gives a recent example of such a situation where post tensioning was utilised on a project in Qatar.
Part of the appeal of post tensioning is the ability to modify the structure of the work at a later date.
The post tensioning works were already completed, but we were given new architectural requirements, including change in area use, and a change in design of the roof canopy, meaning some of the post-tensioned slabs required additional strengthening.