Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Miscellanea Vol. 12, No. 43 (2018)

Residual life prediction of defected Polypropylene Random copolymer pipes (PPR)

Author and affiliation details
  • Abderazzak Ouardi University of Hassan II, National Superior School of Electricity and Mechanics Casablanca (ENSEM), LCCMMS, Morocco
  • Fatima Majid Corresponding author University of Hassan II, National Superior School of Electricity and Mechanics Casablanca (ENSEM), LCCMMS, Morocco ORCID iD0000-0001-8909-8232 majidfatima9@gmail.com
  • Nadia Mouhib University of Hassan II, National Superior School of Electricity and Mechanics Casablanca (ENSEM), LCCMMS, Morocco
  • Mohamed Elghorba University of Hassan II, National Superior School of Electricity and Mechanics Casablanca (ENSEM), LCCMMS, Morocco
DOI
10.3221/IGF-ESIS.43.07
Pages
Pages 97-105
Published
Published inVol. 12, No. 43 (2018)Go to the issue

Abstract

The polypropylene random copolymer (PPR) is a thermoplastic material generally used for the transport of water under pressure, especially hot water. PPR pipes are exposed to severe conditions in terms of pressure and temperature, hence the need to characterize their fracture behavior in order to avoid the design risks. Sudden overpressure is one of the most common problems in piping. It can affect the security of goods and the safety of people. In this context, we have performed tests of overpressures at the laboratory scale according to ASTM D1599 standard, on virgin and notched pipes, to characterize mechanically the fracture behavior of PPR pipes. Afterwards, we identify experimentally the evolution of their damage. The calculation of the damage, by experimental damage models, have led to determine the three stages of evolution of the damage, which are the initiation, the progression and the acceleration of it. Therefore, the concept of reliability is used to specify the critical life fraction relative to the notch depth (βc) of a defect modeled as an external longitudinal groove on the PPR pipe. A comparison of PPR and HDPE pipes damage and reliability has been done. Moreover, a theoretical reassessment of the damage level was done through a judicious adaptation of the theoretical model proposed by the unified theory. From the latter, we proved that theoretical and experimental results show good agreement and correlations.

Keywords

How to cite

APA

Ouardi, A., Majid, F., Mouhib, N., & Elghorba, M. (2017). Residual life prediction of defected Polypropylene Random copolymer pipes (PPR). Fracture and Structural Integrity, 12(43), Pages 97–105. https://doi.org/10.3221/IGF-ESIS.43.07

IEEE

A. Ouardi, F. Majid, N. Mouhib, and M. Elghorba, “Residual life prediction of defected Polypropylene Random copolymer pipes (PPR),” Fracture and Structural Integrity, vol. 12, no. 43, pp. Pages 97–105, 2017, doi: 10.3221/IGF-ESIS.43.07.

MLA

Ouardi, Abderazzak, et al. “Residual life prediction of defected Polypropylene Random copolymer pipes (PPR).” Fracture and Structural Integrity, vol. 12, no. 43, 2017, pp. Pages 97–105. https://doi.org/10.3221/IGF-ESIS.43.07.

Chicago

Ouardi, Abderazzak, Fatima Majid, Nadia Mouhib, and Mohamed Elghorba. 2017. “Residual life prediction of defected Polypropylene Random copolymer pipes (PPR).” Fracture and Structural Integrity 12 (43): Pages 97–105. https://doi.org/10.3221/IGF-ESIS.43.07.

Harvard

Ouardi, A., Majid, F., Mouhib, N. and Elghorba, M. (2017) ‘Residual life prediction of defected Polypropylene Random copolymer pipes (PPR)’, Fracture and Structural Integrity, 12(43), pp. Pages 97–105. doi: 10.3221/IGF-ESIS.43.07.

Vancouver

Ouardi A, Majid F, Mouhib N, Elghorba M. Residual life prediction of defected Polypropylene Random copolymer pipes (PPR). Fracture and Structural Integrity. 2017;12(43):Pages 97-105. doi:10.3221/IGF-ESIS.43.07

BibTeX

@article{ouardi2017, author = {Ouardi, Abderazzak and Majid, Fatima and Mouhib, Nadia and Elghorba, Mohamed}, title = {Residual life prediction of defected Polypropylene Random copolymer pipes (PPR)}, journal = {Fracture and Structural Integrity}, year = {2017}, volume = {12}, number = {43}, pages = {Pages 97--105}, doi = {10.3221/IGF-ESIS.43.07}, url = {https://doi.org/10.3221/IGF-ESIS.43.07}, issn = {1971-8993} }

RIS

TY - JOUR AU - Ouardi, Abderazzak AU - Majid, Fatima AU - Mouhib, Nadia AU - Elghorba, Mohamed TI - Residual life prediction of defected Polypropylene Random copolymer pipes (PPR) JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2017 DA - 2017/12/29 VL - 12 IS - 43 SP - Pages 97 EP - 105 DO - 10.3221/IGF-ESIS.43.07 UR - https://doi.org/10.3221/IGF-ESIS.43.07 SN - 1971-8993 ER -

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