Development of the inspection system for metal fatigue using positron annihilation lifetime method

2014 Fiscal Year Final Research Report

• Project/Area Number: 24760056
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Applied physics, general
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: YAMAWAKI masato 独立行政法人産業技術総合研究所, 計測標準研究部門, 主任研究員 (30526471)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 陽電子寿命測定 / 非破壊検査 / 金属疲労 / シンチレータ / アンチコインシデンス

Outline of Final Research Achievements

Recently, aging of infrastructure is a problem, and the safety evaluation means of the infrastructure has been needed. When applying the positron annihilation lifetime measurement method, it may be able to detect metal fatigue at the early stage. Therefore it is desired of the realization. But it is difficult to apply this method because the conventional positron annihilation lifetime measurement requires two samples cut off.
In this study, by applying the method discovered in our laboratory, which does not require the cutting of samples, we have developed elemental technology to realize the measurement of the structure on-site.

Free Research Field

放射線計測