摘要
Product reliability is crucial for consumer decision-making and brand reputation, driving companies to offer warranties and invest in reliability verification. Sampling inspections with lifetime testing play a key role in managing repair costs efficiently. Acceptance sampling plans (ASPs) are widely employed for this purpose, and recent advancements have integrated ASPs with failure-censored schemes to reduce testing time and costs while ensuring sufficient product life data. Although the failure-censored quick-switching sampling system (FQSS) has demonstrated strong performance, its rigid decision rules may limit practical applicability. This study proposes a more flexible alternative-the failure-censored tightened-normal-tightened sampling system (FTSS), which utilizes the lifetime performance index to enable adaptive decision-making. Comparative analyses demonstrate that the proposed FTSS enhances cost-effectiveness and discriminatory power in reliability assessment, making it particularly beneficial for high-cost lifetime testing. A case study on the reliability verification of lithium batteries for electric vehicles highlights the industrial relevance and practical advantages of the FTSS method.