Over the last few weeks, more large pipeline components have been successfully measured on our Kowari strain scanner. An international collaboration between the engineers and scientist from TWI Ltd., Brunel University and the Bragg Institute has led to this large-scale investigation of the effectiveness of various post-weld heat-treatment procedures on stress relaxation of girth welds.
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| Yao Ren and Anna Paradowska aligning the pipe for measurement on Kowari |
Yao Ren, a PhD student from Brunel University, who is based at TWI Ltd in Cambridge, has been visiting ANSTO for 6 weeks, to learn about the engineering applications of the neutron diffraction and oversee these complex experiments.
The successful fulfilment of the experiments is clearly due to the recent addition into the Kowari instrument optics: a new 3mm collimator was used to define the resolution, the collimator is positioned 500mm away from the measurement location (gauge volume), allowing the experimental team to manipulate large samples (such as these pipes) without the risk of collisions. Kowari is now equipped with 2mm, 3mm, 5mm and 10 mm collimators which are available for general use by the user community.
Published: 13/07/2015