Investigação da concentração de tensões em poço de visita de polietileno por emissão acústica

Abstract

Manhole (PV) is a framework of sewage systems where there is interconnection flows of sewage. Currently the majority of PVs in use is made of precast concrete rings, reinforced concrete, and masonry (with concrete blocks or clay bricks). Due to its material composition is easily subject to degradation, to wear out eventually releasing sand, causing various problems in water treatment equipment and wastewater treatment itself beyond public disorders caused by its failure. Aiming to solve these problems, improve the quality and conditions of sewage treatment, seek to implement manholes made of polyethylene polymer material with appreciable characteristics for this purpose, for example, its inert character, weight, strength and life time. Since it the structure is a prototype, the influence of defects in its structural integrity is not yet established. This paper investigates the stress concentration in its structure and influence of defects on the stress concentration, through nondestructive method acoustic emission and computer simulation.