{"title":"卫星运载火箭航空电子系统中 BGA 器件的振动诱发疲劳寿命评估新方法","authors":"","doi":"10.1016/j.microrel.2024.115524","DOIUrl":null,"url":null,"abstract":"<div><div>A new PCB strain-based methodology for BGA fatigue damage assessment, during system level vibration analysis, is established. The Stress-Life curve for solder joints (Sn37Pb), extracted by FE modelling from peer-reviewed data, is utilized as the damage thresholds instead of traditionally used empirical criteria. To eliminate the modelling effort and resource intensive computations associated with solder joint stress calculations, a correlation between the PCB strain and device solder joint stress is established. Harmonic vibration analysis of PCBs with 3 different sizes, 2 boundary conditions, and different device locations are utilized for this purpose. A novel device and PCB model simplification technique, which does not affect PCB strain results, is also proposed. The methodology is demonstrated for fatigue life assessment of BGA device in a launch vehicle avionics package, under random vibration environment. Subsequently, design improvement to meet the fatigue life requirement is also suggested. Fatigue life is calculated using three different stress cycles estimation models namely Dirlik, Single Moment, and Steinberg's 3-band method, and Single Moment method is found to be most appropriate.</div></div>","PeriodicalId":51131,"journal":{"name":"Microelectronics Reliability","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A novel methodology for vibration induced fatigue life assessment of BGA devices in avionics systems of satellite launch vehicles\",\"authors\":\"\",\"doi\":\"10.1016/j.microrel.2024.115524\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A new PCB strain-based methodology for BGA fatigue damage assessment, during system level vibration analysis, is established. The Stress-Life curve for solder joints (Sn37Pb), extracted by FE modelling from peer-reviewed data, is utilized as the damage thresholds instead of traditionally used empirical criteria. To eliminate the modelling effort and resource intensive computations associated with solder joint stress calculations, a correlation between the PCB strain and device solder joint stress is established. Harmonic vibration analysis of PCBs with 3 different sizes, 2 boundary conditions, and different device locations are utilized for this purpose. A novel device and PCB model simplification technique, which does not affect PCB strain results, is also proposed. The methodology is demonstrated for fatigue life assessment of BGA device in a launch vehicle avionics package, under random vibration environment. Subsequently, design improvement to meet the fatigue life requirement is also suggested. Fatigue life is calculated using three different stress cycles estimation models namely Dirlik, Single Moment, and Steinberg's 3-band method, and Single Moment method is found to be most appropriate.</div></div>\",\"PeriodicalId\":51131,\"journal\":{\"name\":\"Microelectronics Reliability\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2024-10-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Microelectronics Reliability\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S002627142400204X\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microelectronics Reliability","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S002627142400204X","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
A novel methodology for vibration induced fatigue life assessment of BGA devices in avionics systems of satellite launch vehicles
A new PCB strain-based methodology for BGA fatigue damage assessment, during system level vibration analysis, is established. The Stress-Life curve for solder joints (Sn37Pb), extracted by FE modelling from peer-reviewed data, is utilized as the damage thresholds instead of traditionally used empirical criteria. To eliminate the modelling effort and resource intensive computations associated with solder joint stress calculations, a correlation between the PCB strain and device solder joint stress is established. Harmonic vibration analysis of PCBs with 3 different sizes, 2 boundary conditions, and different device locations are utilized for this purpose. A novel device and PCB model simplification technique, which does not affect PCB strain results, is also proposed. The methodology is demonstrated for fatigue life assessment of BGA device in a launch vehicle avionics package, under random vibration environment. Subsequently, design improvement to meet the fatigue life requirement is also suggested. Fatigue life is calculated using three different stress cycles estimation models namely Dirlik, Single Moment, and Steinberg's 3-band method, and Single Moment method is found to be most appropriate.
期刊介绍:
Microelectronics Reliability, is dedicated to disseminating the latest research results and related information on the reliability of microelectronic devices, circuits and systems, from materials, process and manufacturing, to design, testing and operation. The coverage of the journal includes the following topics: measurement, understanding and analysis; evaluation and prediction; modelling and simulation; methodologies and mitigation. Papers which combine reliability with other important areas of microelectronics engineering, such as design, fabrication, integration, testing, and field operation will also be welcome, and practical papers reporting case studies in the field and specific application domains are particularly encouraged.
Most accepted papers will be published as Research Papers, describing significant advances and completed work. Papers reviewing important developing topics of general interest may be accepted for publication as Review Papers. Urgent communications of a more preliminary nature and short reports on completed practical work of current interest may be considered for publication as Research Notes. All contributions are subject to peer review by leading experts in the field.