ABSTRACT

Taiwan's water resources have long been affected by the narrow topography and uneven rainfall seasons, which have severely impacted people's livelihoods, agriculture and industrial water use. With the increase in industrial water consumption, Taiwan will face even more severe water resource challenges in the future. In order to effectively manage limited water resources, in addition to reducing water wastage and improving water use efficiency, it is crucial to develop quality water meter products and select suitable materials. Water meter flow sensors are important tools for measuring and monitoring water resources, and the government regulations stipulate that they have a warranty period of 8 years, so when selecting materials for the sensors, apart from considering the cost factor, it is also necessary to consider their material performance and life span under different environmental conditions. Therefore, in addition to cost considerations, it is also necessary to consider the material performance and life under different environmental conditions when selecting sensor materials. In this study, polymer plastics such as ABS, PPS, PC, Tritan, etc., which are the packaging materials for water meter flow sensors, were used as the research targets, and the reliability accelerated life test was carried out by completely immersing the test specimens in water and at the stress temperatures of 60℃ and 80℃ in order to understand the changes in the nature of the polymer materials. In this study, the acceleration factor and activation energy were determined by the Hallberg-Peck Model to estimate the average failure time of the product under normal use.

KEYWORDS: Accelerated Life Test; Polymer Plastic Materials; Hallberg-Peck Model.