통합 검색 | Korea Science

이우성;황순미;이관훈;송병석;정해성;오근태
- 한국신뢰성학회지:신뢰성응용연구
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- 제9권3호
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- pp.233-248
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- 2009
PAM(Power Amplifier Module) is the important part of a mobile phone transmitter. It amplifies the strength of signal transmitting from a mobile phone to base stations enough to resist noise or interference. In this paper reliability assessment criteria for the PAM are established in terms of quality certification test and lifetime test. The former quality certification test comprises general performance test and environmental test. Items which pass the test undergo lifetime test which guarantees the extent of mean lifetime with certain confidence.
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최만엽;신외경;정해성;백재욱
- 한국신뢰성학회지:신뢰성응용연구
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- 제9권3호
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- pp.195-218
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- 2009
Wiper motors are used in every automobile. They are exposed to a very diverse environment and consists of several components and, therefore needs careful approach to the enhancement and assessment of reliability of the item. In this article reliability standards for wiper motors are established in terms of quality certification test and failure rate test.
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정해성
- 한국신뢰성학회지:신뢰성응용연구
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- 제3권2호
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- pp.93-101
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- 2003
Life time data analysis requires some time-to-failure data to an extent. Some life tests result in few or no failure. In such cases, it is difficult to access reliability with traditional life tests that record only time to failure. Furthermore, with short product development time, reliability tests must be conducted with severe time constraints. For some devices, it is possible to obtain degradation measurements over time, and these measurements may contain useful information about product reliability. This article describes degradation reliability analysis methods to do inferences and predictions about a failure-time distribution by using software. In addition, the possibility of extension to CBM (Condition Based Maintenance) is suggested as an example of applied degradation data analysis.
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정해성
- 한국신뢰성학회지:신뢰성응용연구
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- 제17권4호
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- pp.289-295
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- 2017
Purpose: This paper will focus on the reliability technological innovation following the emergence of industry 4.0 featured by convergence, connection and complexity. In the course of the process, the concept and application of 3R (Robustness, Redundancy, Resilience) are considered along with reliability in industry 4.0. Methods: Reliability paradigm-changes are presented to meet the purpose of keeping the desired function in Industry 4.0. And the introduction of resilience, a concept compromising reliability is to be suggested. Results: The necessity of the 3R (Robustness, Redundancy, Resilience) introduction is emphasized according to reliability paradigm-changes. Conclusion: Reliability, robustness, redundancy and resilience are not mutually exclusive. Ultimately, acquiring the resilience requires robustness, redundancy and fittable maintenance procedures.
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