Relating Field Data to Accelerated Life Testing

将现场数据与加速寿命测试相关联

• 批准号: 0002669
• 负责人: Alice Smith
• 金额: $ 5万
• 依托单位: Auburn University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-01 至 2003-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0002669&HistoricalAwards=false
• 关键词: Relating; Field; Data; Accelerated; Life

EEC-0002669SmithThis project brings together two NSF I/UCRC's to improve accelerated life testing (ALT) of vehicle electronics. The Center for Advanced Vehicle Electronics (CAVE) of Auburn University with partner with the Quality and Reliability Engineering (QRE) Center of Rutgers University and Arizona State University to investigate the relationship between wear, degradation and failure of vehicle controllers as experienced in the field with that expected by the results of ALT conducted in the laboratory. DaimlerChrysler Electronics of Huntsville, Alabama supplies the test bed. Vehicle electronics are subject to stress due to temperature, humidity, cycling and other environmental hazards. The materials that comprise the controllers are susceptible to the effects of corrosion and oxidation. The solder that connects the controller components can crack due to fatigue and creep under high temperature and thermal cycling stresses. These failures affect the performance of the vehicle from slightly to severely. The research of this project will develop a general methodology for specifying accelerated life tests so that they result in an accurate characterization of the degradation and failures that will be experienced in the filed. The failure mechanisms for the assembly materials in field units will be investigated in the development of the accelerated life tests. ALT standards, which new units must pass prior to marketing, will be adequate without being overly conservative, potentially allowing new designs and new materials to be used in vehicle electronics.

EEC-0002669 Smith该项目汇集了两个NSF I/UCRC，以改进车辆电子设备的加速寿命测试（ALT）。 奥本大学先进车辆电子学中心（CAVE）与罗格斯大学和亚利桑那州立大学的质量和可靠性工程中心（QRE）合作，调查车辆控制器的磨损、退化和故障之间的关系，这些控制器在现场的经验与在实验室进行的ALT结果的预期之间的关系。 位于亚拉巴马亨茨维尔的戴姆勒克莱斯勒电子公司提供试验台。 车辆电子设备会受到温度、湿度、自行车和其他环境危害的影响。 构成控制器的材料易受腐蚀和氧化的影响。 连接控制器组件的焊料可能由于高温和热循环应力下的疲劳和蠕变而破裂。 这些故障对车辆性能的影响从轻微到严重。 该项目的研究将开发一种通用方法，用于指定加速寿命测试，以便准确描述现场将经历的退化和故障。 在加速寿命试验的开发过程中，将对现场装置中组装材料的失效机制进行研究。 新产品在上市前必须通过ALT标准，这将是足够的，而不是过于保守，可能允许新的设计和新材料用于汽车电子产品。