Reliability of a System Subjected to a Cumulative Shock Model With a Change Point

Dheeraj Goyal & Arnab Hazra

Applied Stochastic Models in Business and Industry2026https://doi.org/10.1002/asmb.70092article
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Abstract

Shock models play a vital role in describing the lifetime behavior of the system working in a stochastic environment. The cumulative shock model is one of the widely studied models of system failure and describes the failure of a system as the accumulation of additive damage from shocks. In this paper, we study a new cumulative shock model when the magnitudes of shocks are non‐identical over time. The proposed model assumes that the magnitude of a shock changes after a random time, namely the change point. We discuss the mathematical expressions for the reliability function. While closed‐form expressions are unavailable, we further use a novel matrix‐based analytical approach to approximate the reliability of the system. We present numerical examples to illustrate our findings.

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https://doi.org/https://doi.org/10.1002/asmb.70092

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@article{dheeraj2026,
  title        = {{Reliability of a System Subjected to a Cumulative Shock Model With a Change Point}},
  author       = {Dheeraj Goyal & Arnab Hazra},
  journal      = {Applied Stochastic Models in Business and Industry},
  year         = {2026},
  doi          = {https://doi.org/https://doi.org/10.1002/asmb.70092},
}

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