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Author(s): M. F. Amaral
A. Viana da Fonseca
S. Rios
Title: Numerical Methodology to Minimize Resolution and Sensitivity Effects in P-Wave Measurements
Issue Date: 2013
Abstract: This paper presents a new numerical methodology aiming at facilitating the identification of seismic wave's propagation time, using a time domain approach. The solution uses first- and second-order differential computing, namely divided differences methods. Results of extensive laboratory seismic wave tests over aggregate-cement mixtures with different voids ratios (densities) and cement contents (1 %, 2 %, 3 %, 4 %, and 5 %) are discussed. The results indicated relevant differences in values of longitudinal modulus (or P-wave modulus) derived with and without this methodology. This was considered especially important in stiff specimens with high-seismic wave velocities and low-energy input signals.
Subject: Geotecnia, Engenharia do ambiente
Geotechnics, Environmental engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia do ambiente
Engineering and technology::Environmental engineering
Document Type: Artigo em Revista Científica Internacional
Rights: openAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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