Reliability Evaluation System of Electronics Components

2006 ◽  
Vol 326-328 ◽  
pp. 569-572 ◽  
Author(s):  
Seung Woo Lee ◽  
Seung Woo Han ◽  
Jun Yeob Song ◽  
Wan Doo Kim ◽  
Hwa Ki Lee
Keyword(s):  
Evaluation System ◽  
Reference Model ◽  
Reliability Evaluation ◽  
Reliability Prediction ◽  
Service Reliability ◽  
Electronic Components ◽  
Reliability Data ◽  
Physics Of Failure ◽  
Printed Circuits

The reliability, that is long-term quality, requires a different approaching from short-term quality which is used before. As the electronic components are to be easily normalized on the reliability evaluation, many reliability prediction methodologies are used. In this study, integrated reference model of reliability prediction is serviced for existing PRISM and Bellcore which is related on reliability prediction about electronic components, and will service reliability data based on PoF (Physics of Failure) from domestic research center. The constructed frame of reliability evaluation system, which can predict and evaluate reliability of electronic components and MEMS, is designed by using online service of the reliability data accumulated on web. To evaluate proposed system, the reliability evaluation of PCB (Printed Circuits Boards), which is used in NC controller of machine tools, is introduced according to PRISM, the representative reference model of reliability prediction about electronic components based on MIL-HDBK-217F.

Comparative Reliability Prediction Using Physics of Failure Models

2011 ◽  
Vol 2011 (HITEN) ◽  
pp. 000189-000195
Author(s):  
Milton Watts ◽  
K. Rob Harker
Keyword(s):  
Circuit Complexity ◽  
High Impact ◽  
Reliability Prediction ◽  
Life Test ◽  
Physics Of Failure ◽  
Failure Models ◽  
The Individual ◽  
Aging Models ◽  
Device Test

Quartzdyne Electronics has invested millions of device test hours in life testing of circuits in both powered and un-powered tests. In addition to time at temperature, these tests include thermal cycling and high impact drop testing. Recent projects have required the use of larger packages and components as we have expanded the variety of circuits that we build. It is desirable to predict the effects of these changes on long-term reliability before investing in tooling. In this study we will compare a new design which contains these larger components to the simpler, smaller designs for which we have extensive life-test data. Using a physics-of-failure approach, component mounting stresses will be analyzed using finite element modeling. These results will be compared to pre and post-aging shear strengths of actual components of varying sizes. Aging models will then be developed to predict the reliability of the new design based on the comparative stress margins of the individual components coupled with circuit complexity. Once validated, the aging models will enable reliability prediction and trade-off analysis for future designs.

scholarly journals Exit Strategy for Aid Programs: Planning Exit before Entering

2017 ◽  
Vol 5 (7) ◽  
pp. 22 ◽  
Author(s):  
Hyejin Lee
Keyword(s):  
Evaluation System ◽  
Monitoring And Evaluation ◽  
Common Elements ◽  
Exit Strategy ◽  
Political Decision ◽  
Criteria And Indicators ◽  
Strategic Approach ◽  
International Demand ◽  
Aid Programs

As aid interventions by nature are temporary, they will eventually be withdrawn. Reasons and circumstances of withdrawals vary since withdrawals can be part of a strategic approach to long-term sustainability, a change in organizational priorities, or a political decision made at a higher level. A growing international demand for effective and sustainable outcomes of aid programs emphasizes a proper exit and exit strategy. However, a successful exit takes a well-planned strategy at early stages of aid programs and significant amounts of resources. This study reviews approaches to exit and exit strategies at a program level, and common elements of a viable exit strategy including setting an exit timeline, establishing specific criteria and indicators, identifying key actors, and building a monitoring and evaluation system. These elements need to be guided by transparency, inclusion, predictability, obligation, and flexibility. 

scholarly journals CREATION OF SPECIAL BATCHES OF DEVICES TO IMPROVE RELIABILITY OF ELECTRONIC COMPONENTS FOR SPACE APPLICATIONS

2020 ◽  
Vol 258 (3) ◽  
pp. 65-71
Author(s):  
V.I. Kuklin ◽  
V.I. Orlov ◽  
V.V. Fedosov
Keyword(s):  
Historical Background ◽  
Quality Level ◽  
Electronic Components ◽  
Joint Work ◽  
Space Applications ◽  
Manufacturing Plants ◽  
Term Operation ◽  
Optimal Approach ◽  
Improve Reliability

In this paper we give a brief historical background of the stages of work carried out by “ITC – NPO PM” JSC aimed at ensuring the long-term operation of electronic components for space applications. It is shown that the creation of specialized testing facilities is the optimal approach to make batches of electronic components of the Space quality level. We propose a further scenario to improve reliability of electronic components for space applications, involving the joint work of specialized testing facilities and manufacturing plants to make special batches of devices.

scholarly journals PROBABILISTIC DURABILITY PREDICTION OF EXISTING BUILDING ELEMENTS

2004 ◽  
Vol 10 (2) ◽  
pp. 107-112 ◽  
Author(s):  
Romualdas Kliukas ◽  
Antanas Kudzys
Keyword(s):  
Reliability Index ◽  
Probability Distributions ◽  
Reliability Assessment ◽  
Reliability Prediction ◽  
Existing Building ◽  
Reliability Indices ◽  
Latent Defects ◽  
Durability Prediction ◽  
Building Elements

An effect of service and proof actions on probabilistic reliability (serviceability, safety and durability) of building elements (components and members) of existing enclosure and bearing structures is under consideration. Time‐dependent models for reliability assessment of elements under sustained variable and multicycle actions are presented. Revised reliability indices of existing elements exposed to service permanent and variable actions are discussed. It is recommended to assess the long‐term reliability index of elements taking into account the effect of latent defects. Truncated probability distributions of physical‐mechanical resistances of elements and an effect of their latent defects on reliability index assessment are taken into account. Methodological peculiarities of durability prediction of elements and avoiding unfounded premature repairs or replacements are analysed. The applied illustration of the presented method on the probabilistic reliability prediction of deteriorating concrete covers is demonstrated.

PPBES

2015 ◽  
pp. 258-266
Author(s):  
Daphne Griffin ◽  
Tak C. Chan
Keyword(s):  
School District ◽  
Evaluation System ◽  
Curriculum Integration ◽  
Implementation Process ◽  
School Construction ◽  
New School ◽  
Green School ◽  
Operational Practices

The chapter is intended to examine the effort of a progressive school district toward advocating for the green school initiative. The school district's employment of the Planning, Programing, Budgeting, and Evaluation System to implementing green school concepts is reviewed for its effectiveness. The school district's green school effort is observed in the areas of new school construction, existing school renovations, school operational practices, and curriculum integration. While the school district continues its commitment to environmental greenness, suggestions are made to improve the implementation process. The chapter ends in highlighting the long-term benefits of green school initiative.

Digital Preservation Challenges, Infrastructures and Evaluations

2013 ◽  
pp. 74-86
Author(s):  
David Giaretta
Keyword(s):  
Information Structure ◽  
Reference Model ◽  
Digital Rights Management ◽  
Digital Preservation ◽  
Science Data ◽  
Data Infrastructure ◽  
Loosely Coupled ◽  
Digital Objects ◽  
Historical Resources

To preserve digitally encoded information over a long term following the OAIS Reference Model requires that the information remains accessible, understandable and usable by a specified Designated Community. These are significant challenges for repositories. It will be argued that infrastructure which is needed to support this preservation must be seen in the context of the broader science data infrastructure which international and national funders seek to put in place. Moreover aspects of the preservation components of this infrastructure must themselves be preservable, resulting in a recursive system which must also be highly adaptable, loosely coupled and asynchronous. Even more difficult is to be able to judge whether any proposal is actually likely to be effective. From the earliest discussions of concerns about the preservability of digital objects there have been calls for some way of judging the quality of digital repositories. In this chapter several interrelated efforts which contribute to solutions for these issues will be outlined. Evidence about the challenges which must be overcome and the consistency of demands across nations, disciplines and organisations will be presented, based on extensive surveys which have been carried out by the PARSE.Insight project (http://www.parse-insight.eu). The key points about the revision of the OAIS Reference Model which is underway will be provided; OAIS provides many of the key concepts which underpin the efforts to judge solutions. In the past few years the Trustworthy Repositories Audit and Certification: Criteria and Checklist (TRAC) document has been produced, as well as a number of related checklists. These efforts provide the background of the international effort (the RAC Working Group http://wiki.digitalrepositoryauditandcertification.org) to produce a full ISO standard on which an accreditation and certification process can be built. If successful this standard and associated processes will allow funders to have an independent evaluation of the effectiveness of the archives they support and data producers to have a basis for deciding which repository to entrust with their valuable data. It could shape the digital preservation market. The CASPAR project (http://www.casparpreserves.eu) is an EU part funded project with total spend of 16MEuros which is trying to faithfully implement almost all aspects of the OAIS Reference Model in particular the Information Model. The latter involves tools for capturing all types of Representation Information (Structure, Semantics and all Other types), and tools for defining the Designated Community. This chapter will describe implementations of tools and infrastructure components to support repositories in their task of long term preservation of digital resources, including the capture and preservation of digital rights management and evidence of authenticity associated with digital objects. In order to justify their existence, most repositories must also support contemporaneous use of contemporary as well as “historical” resources; the authors will show how the same techniques can support both, and hence link to the fuller science data infrastructure.

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