Taking an aircraft’s temperature as a health check
The title of this post is the title of a talk that I will deliver during the Pint of Science Festival in Liverpool later this month. ... This year I am moving up the size scale and from biomedical engineering to aerospace engineering to talk about condition monitoring in aircraft structures based on our recent research in the INSTRUCTIVE [see 'INSTRUCTIVE final reckoning' on January 9, 2019] and DIMES [see 'Our last DIMES' on September 22, 2021] projects. I am going describe how we have reduced the size and cost of infrared instrumentation for monitoring damage propagation in aircraft structures while at the same time increasing the resolution so that we can detect 1 mm increments in crack growth in metals and 6 mm diameter indications of damage in composite materials. ...
This blog post appeared on May 10th, 2023, on realizeengineering.blog
Seeing small changes is a big achievement
Some years ago I wrote with great excitement about publishing a paper in Royal Society Open Science [see ‘Press release!‘ on November 15th, 2017]. This has become a routine event; however, the excitement returned earlier this month when we had a paper published in the Proceedings of Royal Society of London on ‘A thermal emissions-based real-time monitoring system for in situ detection of cracks’. ... The device detects the changes in the temperature distribution over the surface of the metal caused by the propagation of a crack due to repeated loading of the metal. It is based on the principles of thermoelastic stress analysis ...
This blog post appeared on October 26th, 2022, on realizeengineering.blog
Too much of a good thing?
I wrote a couple of weeks ago about ‘Our last DIMES’ meetings. They were hybrid meetings with about half the participants attending in person and the remainder on-line. ... One of our first steps was to re-equip our meeting rooms with higher quality video conferencing facilities ... If you have never been present during a wing-bend test or a fatigue test on a large composite panel then you might find these clips interesting (see also the video of ‘Noisy progressive failure of a composite panel’ ). We also produced an introductory video for the DIMES project which was to be first in a series of video shorts but the pandemic intervened ...
For more short videos from our earlier projects see ‘Archive video footage from EU projects’ on June 5th, 2019.
This blog post appeared on October 6th, 2021, on realizeengineering.blog
Our last DIMES
Thirty-three months ago (see ‘Finding DIMES‘ on February 6th, 2019) we set off at a gallop ‘to develop and demonstrate an automated measurement system that integrates a range of measurement approaches to enable damage and cracks to be detected and monitored as they originate at multi-material interfaces in an aircraft assembly’. ... Two weeks ago, we held our final review meeting. ... Our innovative technology allows condition-led monitoring based on automated damage detection and enables ground tests on aircraft structures to be run 24/7 saving about 3 months on each year-long test.This blog post appeared on September 22nd, 2021, on realizeengineering.blog
Noisy progressive failure of a composite panel
Composite materials have revolutionized many fields of engineering by providing lightweight strong components whose internal structure can be tailored to optimise their load-bearing capabilities. ... Last month, we completed a further round of tests at Empa to demonstrate the system’s capabilities on composite structures which have been tested almost to destruction. ... Watch and listen to this short video to see and hear the material being torn apart – ignore the loud creaking and groaning from the test rig, it’s the quieter sound like dead leaves being swept up.
This blog post appeared on June 30th, 2021, on realizeengineering.blog
An upside to lockdown
While pandemic lockdowns and travel bans are having a severe impact on spontaneity and creativity in research, they have induced a high level of ingenuity to achieve the final objective of the DIMES project, which is to conduct prototype demonstrations and evaluation tests of the DIMES integrated measurement system. We have gone beyond the project brief by developing a remote installation system that allows local engineers at a test site to successfully set-up and run our measurement system. This has saved thousands of airmiles and several tonnes of CO2 emissions ... We are about to stretch our capabilities further by conducting a remote installation and evaluation test during a full-scale aircraft test at the Aerospace Research Centre of the National Research Council Canada in Ottawa, Canada. ...This blog post appeared on April 14th, 2021, on realizeengineering.blog
Out of the valley of death into a hype cycle?
Most valued player performs remote installation
My Engineering Day
Turning the screw in dentistry
Condition-monitoring using infrared imaging
When seeing nothing is a success
Same problems in a different language
... My research group is working on how we demonstrate the fidelity of predictions from models, how we establish trust in both predictions from computational models and measurements from experiments that are often also ‘models’ of the real world. The issues are similar whether we are considering the structural performance of aircraft [as in DIMES], the impact of agro-chemicals, or the performance of fusion energy and the impact of a geological disposal site.... This blog post appeared on October30th, 2019, on realizeengineering.blog