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정의효(Uihyo Jeong),임홍우(Hongwoo Lim),형재필(Jaephil Hyung),정창욱(Changuk Jung),조정하(Jeongha Cho),장중순(Joongsoon Jang) 한국신뢰성학회 2018 신뢰성응용연구 Vol.18 No.1
Purpose: To propose improved method for normalization, compare to the de facto international standard which is IESNA TM-21 or conventional normalization methods. Methods: Firstly, we analysed conventional methods and specified the problem of normalization method which is based on first measured data. Secondly, we proposed our approach which is based on the design specification. Lastly, we studied a real degradation data which is conducted for 15,000 hours. Conclusion: Proposed normalization method is better approach because it can reflect real data and design specification, and reduce distortion when analysing degradation data. Also, It is appliable to other long-life reliability items.