Permeabilities of composite pipe materials

December 22nd, 2021

R&D Focus Areas:
Compressed gas, Pipeline materials and performance, Hydrogen embrittlement

Lead Organisation:

Not applicable


Start date:
February 2021

Completion date:
July 2021

Key contacts:
Senior Researcher: Daniel Liang –

Long Pipe Ltd

Project total cost:

Project summary description:
The project aimed to measure barrier performance of composite materials against hydrogen gas permeability. This project focus is on the demonstration of the reliability for measuring hydrogen permeation using the facility at CSIRO and the analysis of the measured data to explore the potential factors of materials and pipe fabrication on the permeation performance of the composite materials.

This was done via three controls: enhancing the ability of sensors to detect extreme low levels of hydrogen, apparatus development to minimise hydrogen leaking from the sample fixture, and data processing based on hydrogen permeation mechanisms that operate under different working conditions.

  1. Detection of low hydrogen presence: By integrating a mass spectrometer with the testing system, hydrogen presence as low as 10 ppm (i.e. 0.001%) can be detected by the CSIRO facility.
  2. Apparatus development: The development tasks include configuring the testing set-up, design and fabrication of the sample holder that minimise the leaking through the contact between the sample and holder while avoid generating excessive deformation that can interfere the measurement.
  3. Data analysis: A reliable analysis achieved as a result of expertise and experiences to minimise interference to the measurements from background noise and the understanding of different hydrogen transport mechanisms under different environments.

Related publications and key links:
Not applicable

Higher degree studies supported:
Not applicable


December 2021