Control, acquisition and analysis of resonant-column testing using an automated program

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

António Viana da Fonseca (Author) FEUP; Javier Camacho-Tauta (Author) Other; Jaime Alberto dos Santos (Author) Other

Conference proceedings National

Title: 12º Congresso Nacional de Geotecnia

Pages: 127-138

12º Congresso Nacional de Geotecnia

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences

Other information

DOI: 10.13140/2.1.2795.7124

Resumo (PT): Vol. Único

Abstract (EN): A Resonant-Column apparatus was modified by replacing the internal generator by an arbitrary function generator. A PC oscilloscope was used to acquire both the input current in coils and the vibration response of the system. Software developed in LabVIEW® controls the equipment, acquires data and then processes the information, computing the shear modulus and damping ratio of soil. This calculation is performed utilizing a curve fitting method involving a complexvalue function carried out by a Matlab® script included in the software. Four types of tests can be performed in the program: the conventional test, sine sweep test, random noise test and nonresonance test. Results reveal the advantages of the new automated system; all tests in smallstrain regime can be applied consecutively on the same specimen, being possible to obtain additional information of the dynamic properties.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12