Description


The Structural Modeling and Monitoring Laboratory (LabMEM-Laboratório de Modelagem
Estrutural e Monitoração), has been created in 2006 as an environment integrating resources
for physical testing using structural models in reduced scale and numerical simulation, initially
for concrete structures but with potential to deal with other types of materials and structures.



Faculty members

Prof. Dr. José Luiz Antunes de Oliveira e Sousa (Coordenador)                                                     

Prof. Dr. Luiz Carlos de Almeida (Coordenador Associado)

Prof. Dr. Luiz Carlos Marcos Vieira Junior

Prof. Dr. Leandro Mouta Trautwein

Prof. Dr. Gustavo Henrique Siqueira


Other members

Eng. Fabio Luis Gea dos Santos (PhD. Student)



Laboratory Resources Projects
Publications
Software
Contact Information


Laboratory Resources

The LabMEM has a 65 m2 room, equipped with benches for light work and work with computers, stabilized power supply and network points linked to the FEC server. The equipment and materials available in LabMEM include:

  • flexible test system (servo-controlled hydraulic actuator set for 100 kN) - (FAPESP)
  • Universal testing machine 100 kN, capable of controlling tests by the actuator speed (FINEP / PROINFRA)
  • Digital camera Megaplus II (CCD - 4 Megapixel, 12-bit, lenses and adapters, adapter for connection between camera and computer and illuminators. This equipment for acquiring digital images is integrated into a computing system developed in LabVIEW, allowing the acquisition of digital images synchronized with measurements froms ensors and other equipment as LVDT's, loadcells, electrical sensors, etc. - (FAPESP)
  • Automatic data acquisition devices Data Taker(2 and 1 model DT800 DT80) - (FAPESP)
  • Modular acquisition system from National Instruments data - (CNPq / Universal)
  • Laptops - (FAPESP, CNPq / Universal)
  • 4 Desktop Computers - (FAPESP, CNPq / Universal)
  • LabVIEW software for acquisition and manipulation of monitoring data
  • Software DIANA and ATENA3D, for three-dimensional simulation of fracture processes in concrete structures and others(FAPESP)
  • 2 Reaction frames - capacity 100 kN (FAPESP)
  • Temperature and strain Electrical sensors - (FAPESP)
  • Displacement sensors (LVDT's) - (FAPESP)
  • Optical Fiber strain, displacement and temperature  sensors- (FAPESP)
  • Manual hydraulic actuator to 20 kN (hydraulic cylinder and manual trigger)
  • GPR Control System Unit with a high frequency antenna (1600 MHz) and a low-frequency antenna (270 MHz) (FINEP / Pro Equipment)
  • Power Generator for field work
  • Signal Conditioners, voltage regulators; many smaller equipment and tools necessary for the development of monitoring activities (caliper, micrometer, voltmeters, drill, sander, screwdrivers, pliers, saw, etc.).

FitFG: Softening Curves for Concrete


FitFG
is a program for determining softening curves for plain and fiber reinforced concrete under tension through inverse analysis. Currently, data from three-point bend test on notched beam can be handled.


Authors:     
Fabio Lui­s Gea dos Santos

Jose Luiz Antunes de Oliveira e Sousa
LabMEM/FEC - University of Campinas


Software download


Software distribution


Please observe the following Policy Statements:
  • Unsupported executable versions of the program FitFG are distributed freely and can be downloaded from here
  • Click here to download load-CMOD curves to test the software. Please see README file here.
  •  Copyright and ownership remain with the Authors
  • Neither the Authors, nor the LabMEM Group, nor the University of Campinas are responsible for any use or misuse of the program or results, and assume no liability or responsibility to any person or company for direct or indirect damages resulting from the use of the software.
  • Users are obliged to acknowledge the program and this page in all papers or reports where applicable.

References:

SANTOS, F. G. ; SOUSA, J. L. A. O. . Determination of parameters of a viscous-cohesive fracture model by inverse analysis. Revista IBRACON de Estruturas e Materiais, v. 8, p.669-706, 2015

SOUSA, J. L. A. O. . A Levenberg-Marquardt algorithm for fitting sigma-w curves from three-point bend tests for plain and fiber reinforced concretes. Revista IBRACON de Estruturas e Materiais, v. 4, p. 663-690, 2011

SOUSA, J. L. A. O. ; GETTU, R. . Determining the tensile stress-crack opening curve of concrete by inverse analysis. Journal of Engineering Mechanics, Reston, VA, v. 132, n.2, p. 141-148, 2006


Contact Information

LabMEM-Structural Modeling and Monitoring Laboratory
Faculty
of Civil Engineering, Architecture and Urban Planning

University of Campinas

Av. Albert Einstein, 951

13083-852 Campinas, SP, BRASIL

Phone +55 19 3521 2330

E-mail: labmem@fec.unicamp.br