In practical engineering, reliability analysis of products plays an important role in assessing the corresponding remaining\nlife. Products often have more than one failure mechanism, which means reliability should be evaluated by two or more\nperformance characteristics. To resolve the above problem, based on the degradation values distribution method utilization,\ncopula functions as the link functions of their marginal distributions are introduced in this study. The performance\ncharacteristics are also considered the dependent as well as independent to make a comparison. Moreover, a framework\nfor reliability assessment of products with the multiple performance degradation is developed. Finally, the proposed\nmethodology and model is validated effectively by the fatigue cracks data from the literature. From the results, we can\nsee that the proposed model is more accurate.
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