Numerical Methodology to Minimize Resolution and Sensitivity Effects in P-Wave Measurements

• Type: Article in International Scientific Journal
• Date: 2013

Authors

M. F. Amaral (Author) Other; A. Viana da Fonseca (Author) FEUP; S. Rios (Author) FEUP

Journal

Title: Geotechnical Testing Journal

Vol. 36 No. 2

Pages: 178-186

ISSN: 0149-6115

Publisher: American Society for Testing and Materials

Indexing

ISI Web of Knowledge - 7 Citations

ISI Web of Science

Scopus - 3 Citations

Scientific classification

FOS: Engineering and technology > Environmental engineering

CORDIS: Technological sciences > Engineering > Civil engineering > Geotechnics

Other information

Authenticus ID: P-005-2T8

DOI: 10.1520/gtj20120111

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9