Quantitative failure analysis for IoT systems: an integrated model-based framework

Alhassan Abdulhamid (), Sohag Kabir (), Ibrahim Ghafir () and Ci Lei ()
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Alhassan Abdulhamid: University of Bradford
Sohag Kabir: University of Bradford
Ibrahim Ghafir: University of Bradford
Ci Lei: University of Bradford

International Journal of System Assurance Engineering and Management, 2025, vol. 16, issue 2, No 24, 845-867

Abstract: Abstract The widespread adoption of Internet of Things (IoT) systems emphasises the need for dependable performance. However, challenges emerge due to the inadequacy of informal failure analysis models in evaluating the complex and distributed nature of IoT designs. These challenges can lead to inconsistencies, complicated system modifications, and extended development timelines. This paper presents a Model-Based Systems Engineering (MBSE) approach to create an integrated quantitative analysis framework for assessing the reliability of IoT systems. This approach simplifies the modelling and analysis of failure behaviours in IoT design, linking failure models to system design using standard engineering frameworks. Based on descriptions of IoT systems, the integrated approach establishes a traceability link between the system description and the analysable artefacts generated, such as stochastic Fault Tree Analysis (FTA) and Bayesian network (BN) models, which are essential for effective failure analysis of IoT systems. The approach demonstrates how to quantify system-level failures, identify and prioritise the weakest links in the design, and show how targeted modifications can improve the overall reliability of IoT systems. An illustrative case study on IoT is included to highlight the effectiveness and practical applicability of the proposed framework.

Keywords: Internet of things; Quantitative failure analysis; Model-based systems engineering; Fault tree analysis; Bayesian networks (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s13198-024-02700-5

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