Such developed apparatus permits to characterize successfully more than one pipe diameter. A split disk tensile (SDT) apparatus was developed according to the tensile test machine available in our laboratory. The first one consists of developing an experimental apparatus devoted to study the mechanical properties of PVC pipes at laboratory scale. To this end, two approaches are retained in this paper. The investigation and the prediction of the resistance to deformation or failure of PVC pipes under internal pressure are essential to develop their potential application. The purpose of this work is to assess the circumferential mechanical characteristics and the mechanical strength of industrial PVC pipes, especially under pressure loading. Therefore, the burst pressure solution-based ASSY proposed in this paper is an adequately suitable and precise predictive tool for assessing the failure pressure of PVC pipes. The burst pressure obtained by the ASSY approach declined with the increase of the hardening exponent n and increased with the increase of SDR.
The comparison with the proposed theoretical model and the experimental and FEA results shows that the burst pressure derived from ASSY was consistent with the experimental data, with a relative error ranging from −2.76% to 2.65%, which is more accurate compared to other yield criteria. Moreover, the impact of material parameters and pipe size, such as the strain hardening exponent and standard dimension ratio (SDR) on bursting pressure, were investigated. Furthermore, a finite element analysis (FEA) of PVC burst pressure was also performed based on the tangent intersection (TI) method to validate the proposed method and experimental results. In addition, the PVC uniaxial tensile tests and the pipe burst tests were carried out to determine the material characteristic parameters and burst pressure of the PVC pipe. In this paper, a practical approach based on the average shear stress yield (ASSY) criterion was proposed to assess the PVC pipe burst pressure. Understanding the mechanical properties and burst pressure of PVC pipes is necessary because a large number of pipes rupture due to excessive internal water pressure.
Polyvinyl chloride (PVC) pipes have been extensively applied in water supply network fields.
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