Thermoplastic pipes are used in the industrial fields like water, sewage and gas piping systems as well as other industrial applications, much like the transport of minerals and slurries. The choice of the HDPE pipe fittings depends on many criteria. First of all, this will depend around the conditions useful for each kind of material. Secondly, this will depend on the cost of the chosen material and lastly the mastering from the material’s scenarios of failure.
The final criteria are possible from the mastering in the material characteristics and also the ability to detect the failure, burst or crack, before its occurrence. The adopted approach has to be proactive to facilitate the prediction from the failure and assist the maintenance staff to apprehend the piping system’s damage in the right time. Within this paper, we chose HDPE pipes as material for our own study. Then, we leaded a new approach of failure analysis and prediction using new models. These models are obtained using a modified version of the stress controlled unified theory, a static damage model using burst pressures and a static damage model utilizing the time and energy to failure. Consequently, we used burst pressures of undamaged HDPE pipe fittings as opposed to ultimate stresses. Then, we created groove notches with some other levels of depth.
The obtained burst pressures from these pipes have been thought to be the residual burst pressures employed in our damage models. The representation from the obtained data based on the life fraction gave us an idea regarding the critical life fraction and therefore the critical groove depth which may be allowed. These details continues to be confirmed by three damage models. Then, we determined the many stages of damage to assist the predictive maintenance to define the safe intervals from the PEX-AL-PEX pipe. Moreover, three of the developed models, presented within this paper, represent a simplified strategy to assess the damage based on static tests only, without having done any any dynamic tests. The developed cost-effective approach could be a tool which can help the industrials to get 18dexkpky anticipative maintenance strategy and respect the protection requirements. Also, it will also help them to do quick checks or launch audit pursuit to the manufacturers’ factories for HDPE pipes’ quality control and conformity check about the codes.