Our site uses cookies necessary for its proper functioning. To improve your experience, other cookies may be used: you can choose to disable them. This can be changed at any time via the Cookies link at the bottom of the page.

PE Pipe Manual Quality Materials List SDR - MOP Decision module

Home

PE100+ Association

Truly international membership currently comprising 13 member companies: Borealis, Borouge, FPC, INEOS O&P, IRPC, Korea Petrochemical IND. Co., LTD, lyondellBasell, PetroChina Dushanzi Petrochemical Company, Prime Polymer, SABIC, SCG & Thai Polyethylene, Sinopec, and Tasnee.

What is PE100+ Association

Why PE100+ Association

PE100+ Testimonials

Member Companies

The Advisory Committee

Governance of the Association

Compliance Guidelines

Meetings and reports

Becoming Member

PE100+ Materials

The PE100+ Association promotion of quality relies on the principle of rigorous quality control done by external, independent test institutes.

Testing Institutes

Why choose PE compounds for pressure pipe ?

Quality Materials List

Test Requirements

Testing schedule

Testing methods

Sustainability : environmental position paper

Examples of Reference Installations of PE 100+ pipes

PE technical guidance

HDPE pipe technical guidance

The HDPE Pipe Model, developed by the PE100+ Association with inputs from many industry experts, includes the most frequently asked questions and answers (Q&A's) of all the elements through the pipe system value chain: design, materials, construction, operation & maintenance, and environmental issues.

PE Pipe Manual

Pipe dimensionning

No-Dig technical Guide

PACE+ design tool

The Role of Crazing in the Impact Fracture Toughness of PE Pipe Grades [PE]

Channell, Clutton

# 1995 Edinburgh

A new method based on the Dugdale zone solution for finite geometries is presented to analyse the case of craze growth at the notch tip in Charpy impact experiments. It is believed that correct values of initiation toughness are calculated via this method, leading to greater confidence in the extrapolation technique used to derive the plane strain fracture toughness for polyethylene at high impact speeds. An extensive comparison of the fracture performance of a PEE0 and a PE100 resin has been performed using this approach. There is no difference in minimum plane strain fracture toughness between the grades, but the PE100 resin has far superior resistance to crack initiation by virtue of higher energy absorption through crazing.

Please note that the whole article content is available on PPCA website only

Author(s) : Beech, Clutton

Design of pipe systems for lifetimes in excess of 100 years depends on accelerated testing of pipe at different temperatures, and standard extrapolation methods for assessment of the minimum required strength. However resistance to slow crack growth is an essential parameter to take into account for the development of...

2001 Munich : Mechanisms of Slow Crack Growth in PE Pipe Grades

Author(s) : Beech, Ferguson, Clutton

Design of pipe systems for 50 year lifetimes depends on accelerated testing of pipe at different temperatures and standard extrapolation methods for assessment of whether the minimum required strength is achieved. Further acceleration is used in the notched pipe test (NPT), which is a medium term (up to 1000 hour)...

1998 Gothenburg : Slow Crack Growth and Impact Mechanisms in PE

Author(s) : Clutton, Rose, Capaccio

The development of pipe grades requires the careful balance of several mechanical properties, of which two of the most important are the resistance to slow crack growth (SCG) and rapid crack propagation (RCP). In this paper, we present small-scale tests which enable the rapid assessment of these properties. These...

1995 Edinburgh : Prediction of Notched Pipe Stress Crack Performance

Author(s) : Rose, Channell, Palmer

A series of PE 80 and PE 100 materials have been investigated to determine whether there exists a link between resistance to slow crack growth as measured by notched pipe test and creep of macroscopic oriented samples. Preliminary results suggests that there is a correlation between a single creep parameter and...

1992 Eindhoven : Fibre Creep and Long-Term Fracture Resistance in PE

Author(s) : Channell, Cawood, Capaccio

A critical appraisal has been carried out of the creep fracture of the fibrils in the pre-crack damage zone (craze) of polyethylene homo and copolymers. It has been shown that by assuming that the fibrils are drawn to the natural draw ratio of the material, a clear correlation can be established between the creep rate...

1992 Eindhoven : The Use of recently Developed Experimental Methods and Modelling Techniques to study Crack Propagation in Viscoelastic Materials

Author(s) : Clutton, Dear, Channell

Two novel techniques have been applied to the problem of determining the fracture toughness of polyethylene appropriate to the situation of rapid crack propagation in pipe systems.Agreement is found between the data from the two methods used for evaluating four grades of polyethylene of widely different toughness. By...