Applications of Artificial Neural Networks (ANNs) in exploring materials property-property correlations
MetadataShow full item record
The discoveries of materials property-property correlations usually require prior knowledge or serendipity, the process of which can be time-consuming, costly, and labour-intensive. On the other hand, artificial neural networks (ANNs) are intelligent and scalable modelling techniques that have been used extensively to predict properties from materials’ composition or processing parameters, but are seldom used in exploring materials property-property correlations. The work presented in this thesis has employed ANNs combinatorial searches to explore the correlations of different materials properties, through which, ‘known’ correlations are verified, and ‘unknown’ correlations are revealed. An evaluation criterion is proposed and demonstrated to be useful in identifying nontrivial correlations. The work has also extended the application of ANNs in the fields of data corrections, property predictions and identifications of variables’ contributions. A systematic ANN protocol has been developed and tested against the known correlating equations of elastic properties and the experimental data, and is found to be reliable and effective to correct suspect data in a complicated situation where no prior knowledge exists. Moreover, the hardness increments of pure metals due to HPT are accurately predicted from shear modulus, melting temperature and Burgers vector. The first two variables are identified to have the largest impacts on hardening. Finally, a combined ANN-SR (symbolic regression) method is proposed to yield parsimonious correlating equations by ruling out redundant variables through the partial derivatives method and the connection weight approach, which are based on the analysis of the ANNs weight vectors. By applying this method, two simple equations that are at least as accurate as other models in providing a rapid estimation of the enthalpies of vaporization for compounds are obtained.
- Theses 
Showing items related by title, author, creator and subject.
Developing constraints on property rights in the community interest: concepts of ownership and the limitation of property rights in land and copyright law Howe, Helena Rebecca (2010)There is a dominant ideology of property in land law, the ‘liberal model’, in which the rights of the property owner are perceived as being absolute. However, there is an alternative model, the ‘stewardship model’, in which ...
Chung, Shang-pei (Queen Mary University of London, 2012-10)The reconciliation of patents within the Taiwanese Law of Things has received negligible attention from legal scholars. The primary reason for this is the hesitation, by courts and scholars alike, to construct a new property ...
Synthesis, Structural and Ferroelectric Properties of Perovskite-Like Layered Structured Materials Chen, Chen (Queen Mary University of London, 2015-09-03)Abstract Perovskite-like layered structured (PLS) compounds display a range of interesting physical and chemical properties, including photocatalysis, photoluminescence, ion conductivity, electrochemical stability, ...