Tag Archives: MyResearch

Slicing the cake equally or engineering justice

Decorative photograph of sliced chocolate cakeIn support of the research being performed by one of the PhD students that I am supervising, I have been reading about ‘energy justice’.  Energy justice involves the equitable sharing of the benefits and burdens of the production and consumption of energy, including the fair treatment of individuals and communities when making decisions about energy.  At the moment our research is focussed on the sharing of the burdens associated with energy production and ways in which digital technology might improve decision-making processes.  Justice incorporates the distribution of rights, liberties, power, opportunities, and money – sometimes known as ‘primary goods’.  The theory of justice proposed by the American philosopher, John Rawls in the 1970’s is a recurring theme: that these primary goods should be distributed in a manner a hypothetical person would choose, if, at the time, they were ignorant of their own status in society.  In my family, this is the principle we use to divide cakes and other goodies equally between us, i.e., the person slicing the cake is the last person to take a slice.  While many in society overlook the inequalities and injustices that sustain their privileged positions, I believe that engineers have a professional responsibility to work towards the equitable distribution of the benefits and burdens of engineering on the individuals and communities, i.e., ‘engineering justice’ [see ‘Where science meets society‘ on September 2nd, 2015].  This likely involves creating a more diverse engineering profession which is better equipped to generate engineering solutions that address the needs of the whole of our global society [see ‘Re-engineering engineering‘ on August 30th, 2017].  However, it also requires us to rethink our decision-making processes to achieve  ‘engineering justice’.  There is a clear and close link to ‘procedure justice’ and ‘fair process’ [see ‘Advice to abbots and other leaders‘ November 13th, 2019] which involves listening to people, making a decision, then explaining the decision to everyone concerned.  In our research, we are interested in how digital environments, including digital twins and industrial metaverses, might enable wider and more informed involvement in decision-making about major engineering infrastructure projects, with energy as our starting point.

Sources:

Derbyshire J, Justice, fairness and why Rawls still matters today, FT Weekend, April 20th, 2023.

MacGregor N, How to transcend the culture wars, FT Weekend, April 29/30th, 2023.

Rawls J, A Theory of Justice, Cambridge MA: Belknap Press, 1971

Sovacool BK & Dworkin MH, Global Energy Justice: Problems, Principles and Practices, Cambridge: Cambridge University Press, 2014.

Image: https://www.alsothecrumbsplease.com/air-fryer-chocolate-cake/

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.  At last year’s festival I spoke about the very small: Revealing the invisible: real-time motion of virus particles [see ‘Fancy a pint of science‘ on April 27th, 2022].  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 9th 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.  If you want to learn more how we did it and fancy a pint of science, then join us in Liverpool later this month for part of the world’s largest festival of public science.  This year we have a programme of engineering talks on Hope Street in Frederiks on May 22nd and in the Philharmonic Dining Rooms on May 23rd where I be the second speaker.

The University of Liverpool was the coordinator of the DIMES project and the other partners were Empa, Dantec Dynamics GmbH and Strain Solutions Ltd.  Strain Solutions Limited was the coordinator of the INSTRUCTIVE project in which the other participant was the University of Liverpool.  Airbus was the project manager for both projects.

The DIMES and INSTRUCTIVE projects  received funding from the Clean Sky 2 Joint Undertaking under the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 820951 and 6968777 respectively.

The opinions expressed in this blog post reflect only the author’s view and the Clean Sky 2 Joint Undertaking is not responsible for any use that may be made of the information it contains.

Reliable predictions of non-Newtonian flows of sludge

Regular readers of this blog will be aware that I have been working for many years on validation processes for computational models of structures employed in a wide range of sectors, including aerospace engineering [see ‘The blind leading the blind’ on May 27th, 2020] and nuclear energy [see ‘Million to one’ on November 21st, 2018].  Validation is determining the extent to which predictions from a model are representative of behaviour in the real-world [see ‘Model validation’ on September 18th, 2012].  More recently, I have been working on model credibility, which is the willingness of people, besides the modeller, to use the predictions from models in decision-making [see, for example, ‘Credible predictions for regulatory decision-making’ on December 9th, 2020].  I have started to consider the complex world of predictive modelling of fluid flow and I am hoping to start a collaboration with a new colleague on the flow of sludges.  Sludges are more common than you might think but we are interested in modelling the flow of waste, both wastewater (sewage) and nuclear wastes.  We have a PhD studentship available sponsored jointly by the GREEN CDT and the National Nuclear Laboratory.  The project is interdisciplinary in two dimensions because it will combine experiments and simulations as well as uniting ideas from solid mechanics and fluid mechanics.  The integration of concepts and technologies across these boundaries brings a level of adventure to the project which will be countered by building on well-established research in solid mechanics on quantitative comparisons of measurements and predictions and by employing current numerical and experimental work on wastewater sludges.  If you are interested or know someone who might want to join our research then you can find out more here.

Image: Sewage sludge disposal in Germany: Andrea Roskosch / UBA

Structural damage assessment using infrared detectors in fusion environments

Schematic representation of plasma flux in a fusion reactorAbout six months ago, I described the success of my research group in detecting the early stages of the development of damage in structural components using small, cheap devices based on infrared measurements [see ‘Seeing small changes is a big achievement‘ on October 26th, 2022] after it had been reported in the Proceedings of the Royal Society.  The research was motivated by the needs of the aerospace industry and largely supported via the European Union’s Horizon 2020 research and innovation programme.  We are planning to extend the research to allow our technology to be used for diagnostics in future fusion power plants.  Plasma facing components in these powerplants will experience significant structural and functional degradation in service due to the extreme condition in the reactor.  Our aim is to develop systems based on our infrared monitoring technology that can identify and track material degradation without the need for plant shutdown thereby enabling unplanned maintenance to be undertaken at the earliest sign of component failure.  We are collaborating with the UKAEA and are looking to recruit a PhD student to work on the project supported by the GREEN CDT and Eurofusion.  If you are interested or know someone who might be interested then please follow this link for more information.

Reference:

Amjad, K., Lambert, C.A., Middleton, C.A., Greene, R.J., Patterson, E.A., 2022, A thermal emissions-based real-time monitoring system for in situ detection of cracks, Proc. R. Soc. A., 478: 20210796.