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Percorrer por autor "Junior, Issan"

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  • Direct shear tests: experimental setup based on a labview approach – experimental results in a silty sand soil
    Publication . Junior, Issan; Paula, António Miguel; Gonçalves, José; Braz-César, Manuel
    This work describes an experimental setup that was developed in order to automate the direct shear Tests, to characterize the strength of soils. This experimental setup assures repeatability in the data acquisition, avoiding human errors, mainly when the tests data vary with a high dynamic. The described setup is based on LabVIEW, LVDT sensors and a 16 Bit Data Acquisition Board. For the direct shear Test it was used an apparatus, covered in ASTM standard D-3080 / D3080M - 11, ”Standard Method for direct shear test on soils under consolidated drained conditions”. This paper exposes the applicability study of the direct shear test to an existing silty sand soil, from the city of Braganza, Portugal, with the purpose to verify the applicability of this test with this instrumented apparatus. The results obtained and de main conclusions are presented.
    2020Documento de conferência Acesso aberto Ver mais
  • Direct shear tests: experimental setup based on a labview approach - experimental results in a silty sand soil
    Publication . Junior, Issan; Paula, António Miguel; Gonçalves, José; Braz-César, Manuel
    This work describes an experimental setup that was developed in order to automate the direct shear tests, with the objective of characterizing the mechanical resistance of the soil. This experimental setup ensures repeatability and automation in data acquisition, avoiding human errors, mainly when the test data vary with high dynamics. The described setup is based on LabVIEW approach, LVDT sensors and a 16-bit data acquisition board. For the direct shear test, the procedures guided by ASTM D-3080/D-3080M-11 "Standard Method for Direct shear Tests on soils under Consolidated Drained Conditions". This paper exposes the applicability study of the direct shear test to an existing silty sand soil, from the city of Bragança-Portugal, in order to verify the applicability of this test with the instrumented apparatus. The results obtained and the main conclusions are presented.
    2020Comunicação em conferência Acesso aberto Ver mais