Acoustic emission on melting/solidification of natural granite simulating very deep waste disposal

详细信息	查看全文 | 推荐本文 |

• 作者：Lyubka M. Spasova ; Michael I. Ojovan ; ^{M.Ojovan@sheffield.ac.uk} ; Fergus G.F. Gibb
• 关键词：AE ; acoustic emission ; DBD ; deep borehole disposal ; SRS ; sealed radioactive sources ; SNF ; spent nuclear fuel ; ABS ; absolute energy ; FFT ; Fast Fourier Transformation
• 刊名：Nuclear Engineering and Design
• 出版年：2012
• 期刊代码：132_00295493
• 类别：et
• 出版时间：July, 2012
• 卷：248
• 期：Complete
• 页码：329-339
• 文件大小：1983 K

摘要

Acoustic emission (AE) signals resulting from the melting and solidification of natural granite were monitored and analysed. The experimental work was conducted in laboratory conditions simulating very deep borehole disposal (DBD) of high level wastes such as sealed radioactive sources (SRS) or spent nuclear fuel (SNF). The cumulative number of signals, their durations and frequencies were the main characteristics of the monitored processes. The recorded AE could be associated with the complex changes in volume and shape of the constituent minerals associated with solid-liquid and solid-solid phase transformations within the granite. AE from the granite was also studied in part by monitoring phase transformation on heating and cooling of quartz.