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Equipment

The infrastructure of ITSAK consists of various units suitable for the measurement of physical parameters related to the spatial variation of the ground acceleration, ambient noise, variation of the velocity of the P and S waves with depth and response of structures.

Among them are:

  • 80 accelerographs of type QDR (with resolution of 11 bits equipped with Kinemetrics QDR /MEMS based technology sensors),

  • 10 Kinemetrics accelerographs of type SSA1 & SSA2 (with resolution of 12 bits and FBA accelerometers),

  • 14 Kinemetrics Altus accelerographs. 3 are of type K2 and 11 are of type Etna with 19 and 18 bits respectively resolution, equipped with Kinemetrics-Episensor sensors,

  • 28 GeoSIG GCR-24 accelerographs with recorder of 24 bits resolution equipped with Guralp CMG-5T sensors,

     

     

  • 15 Guralp CMG-5TD accelerographs with 24 bits resolution equipped with broadband accelerometers,

  • 5 six-channels 24bits recording units CMG24 with 5 surface CMG-5T and 5 CGM-5TB borehole accelerometers and corresponding cables of various lengths.

The communicaion system between ITSAK and instruments is telephone telemetry.

  • A portable system consisting of 13 CMG-6TD broadband units, connected to central recording unit by Wi-Fi,

  • 2 CityShark recorders (24 bits resolution) equipped with Lenartz Le5s seismometers,

  • The seismic prospecting instrumentation consists of one GEOMETRΙCS strataview R24-02, 24 channels seismograph, one cross-hole electromagnetic hammer (source), one inflated tube damping system and a BGS triaxial geophone,

  • 3 six-channels data logger (Earthdata-PG6-24) and 6 broadband magnetometers (Metronix MFS06),

  • Triaxial test device TRΙSCAN 5OKN with recording unit, cell (diameter 50mm, 1700KN) and supplementary equipment to apply and measure pressures (sensors, load pressure table etc),

     

     

  • Triaxial cell of diameter 150mm (Wykeham Farrance Eng.),

  • Mobile structural accelerometer array consisting of 2 Kinemetrics K2 recording units (19-bit resolution) able to support up to 20 channels (uniaxial accelerometers),

 

  • High-resolution structural velocity-meter array for monitoring structural response to ambient vibrations, able to support up to 16 channels (uniaxial velocimeters). Recording unit: TEAK LX-10 Velocimeters: Pinnochio data systems AX 150 vibrophones,

     

     

  • Electrodynamic shaker, for uniaxial excitation of structures. APS Dynamics Inc. Electro-seis Model 400. Capability of uniaxial sinusoidal excitation up to 400N max force and 158 mm max stroke,

  • Eccentric mass vibrator system, ANCO Engineers model MK-500U. Capability of uniaxial sinusoidal horizontal force up to 50 kN (from 10.5 to 20 Hz). Operating frequencies 0.1 to 20 Hz. The shaker is coupled to a 16-channel accelerometer array for monitoring the structural response (uniaxial accelerometers: Dytran Instruments Inc model 3101A LIVM),

     

     

  • A Ford Transit custom designed truck for support of instrumentation procedures with a 4 x 2 x2,2 m working and equipment storage space The unit can also support a mechanism with a 25 kN pulling capacity for use in structural pull-out tests,

  • Fully equipped laboratory for service and maintenance of electronic devices.

 

 

  • Proceq equipment for non-destructive testing of structures, structural components and materials consisting of two SCHMITT concrete test hammers, one PROFOMETER 5 Scanlog Rebar Locator, a TICO ultrasonic tester for concrete quality, a RESI electrical resistance tester for assessment of rebar corrosion risk and a DYNA pull-off tester for determination of concrete surface strength.