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Defect types. (2021)
Book Chapter
FAISAL, N., CORA, Ö.N., BEKCI, M.L., ŚLIWA, R.E., STERNBERG, Y., PANT, S., DEGENHARDT, R. and PRATHURU, A. 2021. Defect types. In Sause, M.G.R. and Jasiūnienė, E. (eds.) Structural health monitoring damage detection systems for aerospace. Springer aerospace technology. Cham: Springer [online], chapter 3, pages 15-72. Available from: https://doi.org/10.1007/978-3-030-72192-3_3

This chapter provides an overview of the common types of defects found in various structural materials and joints in aircraft. Materials manufacturing methods (including large-scale production) have been established in the aircraft industry. However,... Read More about Defect types..

Data reduction strategies. (2021)
Book Chapter
BHOWMIK, B., QUQA, S., SAUSE, M.G.R., PAKRASHI, V. and DROUBI, M.G. 2021. Data reduction strategies. In Sause, M.G.R. and Jasiūnienė, E. (eds.) Structural health monitoring damage detection systems for aerospace. Springer aerospace technology. Cham: Springer [online], chapter 9, pages 243-272. Available from: https://doi.org/10.1007/978-3-030-72192-3_9

Based on the variety of methods available for gathering data for the aircraft health status, the challenge is to reduce the overall amount of data in a trackable and safe manner to ensure that the remaining data are characteristic of the current airc... Read More about Data reduction strategies..

Monitoring tasks in aerospace. (2021)
Book Chapter
PANT, S., SHARIF KHODAEI, Z. and DROUBI, M.G. 2021. Monitoring tasks in aerospace. In Sause, M.G.R. and Jasiūnienė, E. (eds.) Structural health monitoring damage detection systems for aerospace. Springer aerospace technology. Cham: Springer [online], chapter 2, pages 5-14. Available from: https://doi.org/10.1007/978-3-030-72192-3_2

Approximately up to one-fifth of the direct operating cost of a commercial civilian fixed-wing aircraft is projected to be due to inspection and maintenance alone. Managing aircraft health with minimal human intervention and technologies that can per... Read More about Monitoring tasks in aerospace..

Strain monitoring. (2021)
Book Chapter
VANLANDUIT, S., SORGENTE, M., ZADEH, A.R., GÜEMES, A. and FAISAL, N. 2021. Strain monitoring. In Sause, M.G.R. and Jasiūnienė, E. (eds.) Structural health monitoring damage detection systems for aerospace. Springer aerospace technology. Cham: Springer [online], chapter 8, pages 219-241. Available from: https://doi.org/10.1007/978-3-030-72192-3_8

This chapter provides an overview of the use of strain sensors for structural health monitoring. Compared to acceleration-based sensors, strain sensors can measure the deformation of a structure at very low frequencies (up to DC) and enable the measu... Read More about Strain monitoring..

The impact of thermal ageing on sealing performance of HNBR packing elements in downhole installations in oilfield wellhead applications. (2021)
Journal Article
HASSANI, F., FAISAL, N.H., NISH, R., ROTHNIE, S. and NJUGUNA, J. 2022. The impact of thermal ageing on sealing performance of HNBR packing elements in downhole installations in oilfield wellhead applications. Journal of petroleum science and engineering [online], 208(part B), article 109200. Available from: https://doi.org/10.1016/j.petrol.2021.109200

Hydrogenated nitrile butyl rubber (HNBR) elastomers are highly resistant to chemicals and degradation, and they are good candidates to be adopted in aggressive environmental conditions of high temperature and pressure. As these service parameters are... Read More about The impact of thermal ageing on sealing performance of HNBR packing elements in downhole installations in oilfield wellhead applications..

Investigating the influence of the core material on the mechanical performance of a nitinol wire wrapped helical auxetic yarn. (2021)
Journal Article
FAISAL, N.H., FOWLIE, A., CONNELL, J., MACKENZIE, S., NOBLE, R. and PRATHURU, A.K. 2022. Investigating the influence of the core material on the mechanical performance of a nitinol wire wrapped helical auxetic yarn. Journal of strain analysis for engineering design [online], 57(5), pages 377-391. Available from: https://doi.org/10.1177/03093247211027085

Helical Auxetic Yarns (HAYs) can be used in a variety of applications, from healthcare to blast and impact resistance. This work focuses on the effect of the use of different core materials (e.g. rubber, polyurethane, polytetrafluoroethylene/teflon,... Read More about Investigating the influence of the core material on the mechanical performance of a nitinol wire wrapped helical auxetic yarn..

Drilling oil-based mud waste as a resource for raw materials: a case study on clays reclamation and their application as fillers in polyamide 6 composites. (2021)
Journal Article
SIDDIQUE, S., LEUNG, P.S. and NJUGUNA, J. 2021. Drilling oil-based mud waste as a resource for raw materials: a case study on clays reclamation and their application as fillers in polyamide 6 composites. Upstream oil and gas technology [online], 7, article ID 100036. Available from: https://doi.org/10.1016/j.upstre.2021.100036

To convert the hazardous oil-based mud waste into a resource, this study has addressed reclaimed nanoclays and its application as a filler material for reinforcing polyamide 6 polymer matrix into a novel polymer composite material. This work focuses... Read More about Drilling oil-based mud waste as a resource for raw materials: a case study on clays reclamation and their application as fillers in polyamide 6 composites..

Shock propagation behaviour and determination of Gruneisen state of equation for pultruded polyester/glass fibre-reinforced composites.   (2020)
Journal Article
MUKHERJI, A. and NJUGUNA, J. 2021. Shock propagation behaviour and determination of Gruneisen state of equation for pultruded polyester/glass fibre-reinforced composites. Composite structures [online], 262, article ID 113444. Available from: https://doi.org/10.1016/j.compstruct.2020.113444

Polyester fibres reinforced with glass fibres hybridised polyester resin composite (PFR/GFHC) is a unconventional complex high-molecular weight crosslinked network polymer composite. This novel composite can be used in the manufacture of structural b... Read More about Shock propagation behaviour and determination of Gruneisen state of equation for pultruded polyester/glass fibre-reinforced composites.  .

3D printing for hip implant applications: a review. (2020)
Journal Article
OKOLIE, O., STACHUREK, I., KANDASUBRAMANIAN, B. and NJUGUNA, J. 2020. 3D printing for hip implant applications: a review. Polymers [online], 12(11), articles ID 2682. Available from: https://doi.org/10.3390/polym12112682

There is a rising demand for replacement, regeneration of tissues and organ repairs for patients who suffer from diseased/damaged bones or tissues such as hip pains. The hip replacement treatment relies on the implant, which may not always meet the r... Read More about 3D printing for hip implant applications: a review..

Damping properties of flax/carbon hybrid epoxy/fibre-reinforced composites for automotive semi-structural applications. (2020)
Journal Article
FAIRLIE, G. and NJUGUNA, J. 2020. Damping properties of flax/carbon hybrid epoxy/fibre-reinforced composites for automotive semi-structural applications. Fibers [online], 8(10), article ID 64. Available from: https://doi.org/10.3390/fib8100064

The ever-increasing demand for environmentally friendly biocomposites for use in various engineering applications requires a strong understanding of these materials properties, especially in automotive applications. This study focused on investigatin... Read More about Damping properties of flax/carbon hybrid epoxy/fibre-reinforced composites for automotive semi-structural applications..

Insulating MgO–Al2O3–LDPE nanocomposites for offshore medium-voltage DC cables. (2020)
Journal Article
GUPTA, R., SMITH, L., NJUGUNA, J., DEIGHTON, A. and PANCHOLI, K. 2020. Insulating MgO–Al2O3–LDPE nanocomposites for offshore medium-voltage DC cables. ACS applied electronic materials [online], 2(7), pages 1880-1891. Available from: https://doi.org/10.1021/acsaelm.0c00052

A polymer–metal oxide nanocomposite is a key in developing a high-temperature insulation material for power electronics and high-voltage direct current (HVDC) and medium-voltage direct current (MVDC) subsea cables having the capability of transmittin... Read More about Insulating MgO–Al2O3–LDPE nanocomposites for offshore medium-voltage DC cables..