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정범석(Jung Beom-Seok),이석민(Lee Suk-Min),이중규(Lee Jung-Kyu) 한국구조물진단유지관리학회 2003 한국구조물진단학회 학술발표회논문집 Vol.- No.-
The Impact-Echo technique, based on an analysis of the transient response of structures in the frequency domain, has been applied successfully to several kinds of fault search techniques for concrete. However, the Impact-Echo technique may sometimes result in the low reliability. In this paper, the reliability of the Impact-Echo technique was investigated through the numerical simulation studies for the concrete slab. The finite element method, using the impact responses of the concrete slab with the implanted flaws, were also carried out to gain an understanding of the transient wave propagation properties.
정범석 ( Jung Beom-seok ),이석민 ( Lee Suk-min ),이중규 ( Lee Jung-kyu ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.1
The Impact-Echo technique, based on an analysis of the transient response of structures in the frequency domain, has been applied successfully to several kinds of fault search techniques for concrete. However, the Impact-Echo technique may sometimes result in the low reliability. In this paper, the reliability of the Impact-Echo technique was investigated through the numerical simulation studies for the concrete slab. The finite element method, using the impact responses of the concrete slab with the implanted flaws, were also carried out to gain an understanding of the transient wave propagation properties.
정범석 ( Jung Beom Seok ),신길용 ( Shin Kil Yong ),신현승 ( Shin Hyun Seung ) 한국구조물진단유지관리공학회 2000 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.4 No.1
A dynamic response conversion algorithm in time domain is proposed for the problem of es the displacements by defining the transformed responses. The correction of errors can be through follows step. In the first step, using an interpolation method of the measure appropriate to the error correction is proposed. In the second step, the errors of t responses are FIR filtered by the frequency limit. Double integration of the corrected a frequency domain produce the improved results of transformed responses.