This paper delves into cumulative damage on aluminium cladding panels attributed to hailstorms throughout the lifespan of the installations. 40 gas gun tests subjecting the cladding panel to repeated impact were undertaken for the purpose of studying cumulative damage behaviour. Insights from these tests were integrated into a hail size distribution model to characterise the probabilistic distribution of permanent indentation resulted from multiple hailstorm events. A life-cycle analysis framework was subsequently introduced, incorporating the natural variability of hailstone sizes and dynamic response of claddings to repeated ice impact. Intervention criterion can be established based on knowledge of the accumulation of permanent indentation into the cladding panels. Proactive actions are recommended should the indentations become visible to prevent worsening damage. Randomness of hailstorm occurrences was considered using hazard function which can be inferred from historical observations. Practical application of the proposed model is illustrated through case studies of two Australian states, coupled with comparative analyses highlighting key factors influencing cladding performance. The ability to account for stochasticity distinguishes the presented framework from existing deterministic approaches.

中文翻译：

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铝覆面板抗冰雹的生命周期性能

本文深入研究了铝覆面板在装置整个使用寿命期间因冰雹而造成的累积损坏。为了研究累积损伤行为，进行了 40 次气枪测试，使覆层板受到反复冲击。这些测试的见解被整合到冰雹尺寸分布模型中，以表征多次冰雹事件造成的永久压痕的概率分布。随后引入了生命周期分析框架，结合了冰雹尺寸的自然变化和覆层对反复冰冲击的动态响应。可以基于对覆层板中永久压痕累积的了解来建立干预标准。如果压痕变得明显，建议采取主动行动，以防止损坏恶化。使用可以从历史观测中推断出的危险函数来考虑冰雹发生的随机性。通过澳大利亚两个州的案例研究以及突出影响覆层性能关键因素的比较分析来说明所提出模型的实际应用。考虑随机性的能力将所提出的框架与现有的确定性方法区分开来。