Research Publications Authored by SLIIT Staff
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This collection includes all SLIIT staff publications presented at external conferences and published in external journals. The materials are organized by faculty to facilitate easy retrieval.
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Publication Embargo Atomistic modelling of crack-inclusion interaction in graphene(Pergamon, 2018-05-15) Dewapriya, M. A. N; Meguid, S. A; Rajapakse, R. K. N. DIn continuum fracture mechanics, it is well established that the presence of crack near an inclusion leads to a significant change in the crack-tip stress field. However, it is unclear how atomistic crack-inclusion interaction manifests itself at the nanoscale where the continuum description of matter breaks down. In this work, we conducted molecular dynamics simulations to investigate the interactions of an atomic-scale boron nitride inclusion with an edge crack in a graphene sheet. Numerical simulations of nanoscale tensile tests were obtained for graphene samples containing an edge crack and a circular inclusion. Stress analysis of the samples show the complex nature of the stress state at the crack-tip due to the crack-inclusion interaction. Results reveal that the inclusion results in an increase (amplification) or a decrease (shielding) of the crack-tip stress field depending on the location of the inclusion relative to the crack-tip. Our numerical experiments unveil that inclusions of specific locations could lead to a reduction in the fracture resistance of graphene. Results of the crack-inclusion interaction study were compared with the corresponding results of crack-hole interaction problem. The study also provides an insight into the applicability of well-established continuum crack-microdefect interaction models for the corresponding atomic scale problems.Publication Embargo Smart image-interaction with digital image(IEEE, 2016-12-16) De Silva, D. I; Saleem, S. A; Mariathas, J. A; Veerasingham, T; Mahawithana, SImages are the only source where the user can capture the real world environment on a two dimensional space. But these days the user has to use many cropping and cloning tools to manipulate, remove and do all necessary editing to an object in digital images. Smart image is developed as revolutionary solution with simpler user interfaces for users to interact with these digital images. The system helps to extract the objects and reconstructs the background with minimal user interaction. The user simply has to select an object to manipulate or remove. The wall is detected with edge detection and the color and texture of the wall is changed according to the user input. In addition to those features there will be a mobile version for the proposed system to capture a set of images of objects of their interest are captured and the system generates a three dimensional model from the design item. The system is demonstrated on a range of real world images and validated.Publication Embargo Lounging with robots–social spaces of residents in care: a comparison trial(Wiley Online Library, 2015-12-02) Peri, K; Kerse, N; Broadbent, E; Jayawardena, C; Kuo, T; Datta, C; Stafford, R; MacDonald, BTo investigate whether robots could reduce resident sleeping and stimulate activity in the lounges of an older persons care facility.