• Title/Summary/Keyword: CNSM

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Assessment of Flexural Strengthening Behavior Using the Stirrup-Cutting Near Surface Mounted(CNSM) CFRP strip (스터럽 절단 탄소섬유판 표면매립공법의 휨 보강 성능 평가)

  • Moon, Do Young;Oh, Hong Seob;Zi, Goang Seup
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.16 no.6
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    • pp.102-112
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    • 2012

  • Recently, the near surface mounted (NSM) FRP strengthening technique has been actively applied to deteriorated concrete structures for rehabilitation purposes. However, the use of this conventional NSM technique could be restricted due to the insufficient height or strength of the concrete cover. In this study, the stirrup-Cutting Near Surface Mounted(CNSM) technique was considered as an alternative, whereby NSM strips are placed at a deeper level, namely at the level of the main steel reinforcement. A flexural test of a concrete beam strengthened with CNSM technique was performed and the results were then compared to those for a concrete beam strengthened by the conventional NSM technique. The embedment length of the CFRP strips was varied in order to increase the effect of the anchoring depth of the NSM and CNSM CFRP strips in the beam specimens. From the results of the test, the beam with the CNSM CFRP strip showed typical structural behavior similar to that of the beam with the NSM CFRP strip. Moreover, there was no apparent structural degradation resulting from the stirrup partial-cutting. Consequently, the CNSM strengthening technique can be suitably utilized for extensively damaged concrete structures where it is difficult to apply the conventional NSM technique.

  • https://doi.org/10.11112/jksmi.2012.16.6.102 인용 PDF KSCI

OSCILLATORY MAGNETIC ANISOTROPY IN Fe/Cr/Fe TRILAYERS (Fe/Cr/Fe 삼층구조에서의 진동하는 자기이방성)

  • Kim, Ki-Yeon;Kim, Dong-Hyun;Shin, Sung-Chul;You, Chun-Yeol
    • Proceedings of the Korean Magnestics Society Conference
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    • 2002.12a
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    • pp.194-195
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    • 2002

  • Fe/Cr/Fe trilayers have attracted much interest from both theoretical and experimental aspects due to many novel magnetic properties such as antiferromagnetic coupling, giant magnetoresistance, oscillatory bilinear and biquadratic coupling [1]. In this work, we report that there is an oscillation of magnetic anisotropy with increasing intervening Cr layer thickness in Fe/Cr/Fe trilayers. (omitted)

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