Stress corrosion cracking in plastic pipes: Observation and modeling

Byoung Ho Choi, Alexander Chudnovsky, Kalyan Sehanobish

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


Stress corrosion cracking (SCC) in engineering thermoplastics is commonly observed in the form of a microcrack colony within a surface layer of degraded polymer exposed to a combined action of mechanical stresses and chemically aggressive environment. A probabilistic modeling of SCC initiation is briefly discussed. A deterministic modeling of slow stress corrosion (SC) crack growth process is developed using Crack Layer (CL) theory. Numerical solution of SC crack growth equations is discussed. Comparison of the kinetics of cracks driven by SC and by stress only is presented. Conventional plot of SC crack growth rate vs. the stress intensity factor is constructed and analyzed. An algorithm for conservative estimation of lifetime of engineering thermoplastic subject to a combination of mechanical stresses and chemically aggressive environment is discussed.

Original languageEnglish
Pages (from-to)81-88
Number of pages8
JournalInternational Journal of Fracture
Issue number1
Publication statusPublished - 2007 May
Externally publishedYes


  • Crack initiation
  • Crack layer
  • Degradation
  • Stress corrosion cracking

ASJC Scopus subject areas

  • Computational Mechanics
  • Modelling and Simulation
  • Mechanics of Materials


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