Thermoplastic pipes are being used in all of the industrial fields such as water, sewage and gas piping systems and also other industrial applications, such as the transport of minerals and slurries. Choosing the HDPE pipe fittings depends on many criteria. To begin with, this will depend in the conditions useful of every kind of material. Secondly, all depends on the cost of the chosen material and finally the mastering in the material’s scenarios of failure.
The very last criteria are possible throughout the mastering of the material characteristics along with the capacity to detect the failure, burst or crack, before its occurrence. The adopted approach should be proactive to facilitate the prediction in the failure and assist the maintenance staff to apprehend the piping system’s damage at the right time. Within this paper, we chose HDPE pipes as material for our study. Then, we leaded a brand new approach of failure analysis and prediction using new models. These models are obtained through a modified version of the stress controlled unified theory, a static damage model using burst pressures plus a static damage model utilizing the a chance to failure. For that reason, we used burst pressures of undamaged HDPE pipe fittings instead of ultimate stresses. Then, we created groove notches with different degrees of depth.
The obtained burst pressures from the pipes happen to be considered as the residual burst pressures employed in our damage models. The representation in the obtained data according to the life fraction gave us a perception in regards to the critical life fraction and therefore the critical groove depth which is often allowed. This info is confirmed by three damage models. Then, we determined the various stages of damage to help the predictive maintenance to define the safe intervals of your PEX-AL-PEX pipe. Moreover, the 3 developed models, presented within this paper, represent a simplified approach to look at the damage based upon static tests only, without doing any dynamic tests. The developed cost-effective approach can be quite a tool that can help the industrials to get 18dexkpky anticipative maintenance strategy and respect the security requirements. Also, it will help those to do quick checks or launch audit mission to the manufacturers’ factories for HDPE pipes’ quality control and conformity check with regards to the codes.