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1. x S ye OR Te T EE ER T w A i dd d d 6 d 5 i ds m uei ET EER ER iR Stress Path can be controlled and viewed in total stress effective stress or unsaturated conditions DYNATRIAX ot Technolog OPONU eem e earned p premier OE Loading parameters E ES i wei Termination conditions EE woes Paco cos Ses erik Sto savo rc OE sade ore r IE ra Wykeham Farrance The cyclic stage has options for the pore air and pore water to be drained or undrained DYNATRIAX Wykeham Farrance veel ESTE EE Cyclic values can be viewed in total effective or unsaturated Stress with waveshapes shown up to 20 cycles DYNATRIAX Wykeham Farrance eme x meer ben reso pE e wese ads Ee ee FR nado 5 20 o RIE Cyclic values can be viewed in total effective or unsaturated Stress with graph showing pressure DYNATRIAX oF Technolog ETA EXEXE EER ET NEE EN preme sac etime taoin EIE APP EIE tine sac SWCC stage2. Stress path method control for selecting which stresses will be used as the targets for the stress path and whether the stage will be stress or strain controlled P amp q ramps to target values of p 1 3 v 2 h and q v s amp t ramps to target values of s 12 v h and t 32 v h Total horizontal amp vertical stress ramps to target values of total horizontal and vertical stresses DYNATRIAX Wykeham Farrance Cyclic shear control for selecting the method for the cyclic stage from ASTM D 5311 Load Controlled Cyclic Strength Test ASTM D 3999 Load Controlled Modulus and Damping Test ASTM D 3999 Displacement Controlled Modulus and Damping Test Non standard multi cycle test to cycle the specimen with user defined control modes wave shapes and number of cycles Non standard single cycle test to cycle the specimen with user defined control modes and wave shapes with the number of test cycles fixed to one Waveshape control for selecting a wave shape for the cyclic loading select from Sinusoidal Triangle Square or User defined A user defined wave shape is selected using the User waveform cell User waveform cell for loading in a pre defined wave shape file A wave shape file is a udw file which is created using the program UDW Generator that accompanies this software This function is only available if you have selected User d
3. iturated tests on with 6 ports ouble triaxial cell for unsaturated tests on m samples complete with 6 ports Complete with the special pedestal and interchangeable high air entry stones DYNATRIAX Wykeham Farrance The Unsaturated Test Software T same as the Dynatriax software with the addition of air pressure control in all consolidation stages The software includes a stage for Soil Water Characteristic Curve determination The following slides will show the differences between the two cyclic software s DYNATRIAX CONTROLS Masters of Technolog Back Pressure Be lt Air Pressure m near c E lt Feedback Load Displacement Cell Pressure Back Pressure Pore Pressure Actuator Position Volume Reading Air Pressure Cell Volume Reading 30 17 58 45 06 m 43 8 Wykeham Farrance The manual control panel has air pressure control DYNATRIAX Masters of eenoog Load Displacement Volume Reading Cell Pressure Back Pressure Pore Pressure Air Pressure Volume Reading On Speciment On Specimen2 Radial belt Mid Height O kra Actuator Position Pressure o gt 27 77 mm 45 0 kPa gt gt 1 295 m c 1 323 m lt gt 1 262 m lt gt 0 lt gt Lae Wykeham Farrance Live transducer display Reading include pore air pressur
4. tally controlled e Fitted with LVDT transducer 15 mm Reguires air power supply 800 kPa continuous running pressure e Designed for static dynamic tests either stress controlled or strain controlled The actuator has an integral displacement transducer which is used for actuator control and as an indicator to the piston position in the actuator The displacement transducer cannot be zeroed or the piston position would be lost specimen displacement is measured using an separate transducer DYNATRIAX BS Wykeham Farrance Actuator Locking System ly position when the triaxia load fame is being used for the momotonic shear stage the clamp indicated is screwed upwards untill it touches the underside of the crosshead This system allows levels of force higher than the actuator capacity to be applied supported by the Tritech machine 50 100 capacity A range of submersible load cells can be selected from the catalogue DYNATRIAX Wykeham Farrance A critical part of cyclic loading and waveshape control is the alignment of the actuator and the triaxial cell ram The Wykeham Farrance system has two adjustments One adjusts in the horizontal plane and the other a ball seat aligns in the vertical DYNATRIAX Wykeham Farrance Air Water Interface Distribution Panel ween the air and water in the pressure system It receives e cell and back pressure control valves th
5. Gn 2 id eet ross Ni eet Pressure B Test Sane i TE Remove sage TE 9 Tesdteapet 8 Sav terete Er 7 22 n 3 The software also allows you to customise the software to the language of choice All the prompts and labels are in the left column you enter the translation in the right hand column click apply and the software will run in the language you have chosen 46 DYNATRIAX Wykeham Farrance All data can be downloaded into an excel spreadsheet for evaluation Top deviator stress cycles Middle Axial strain cycles Axial strain Bottom Excess pore pressure cycles Exeoss pore pressure ratio 10 15 20 2 E Number or cycles M DYNATRIAX V Wykeham Farrance Wykeham Farrance UNSATURATED SOILS TESTING DYNATRIAX Wykeham Farrance An upgrade for testing Unsaturated Soils is available consisting of the following 000 UNS Includes the additional servo valve for air pressure control and software to automatically perform the test stages by the axis translation method Saturation Consolidation Stress Path Ko Monotonic Shear Cyclic Shear and Soil Water Characteristic Curve Stages are all available Test data recording for each stage All data can be downloaded to spreadsheet DYNATRIAX V Wykeham Farrance Double triaxial cells for unsaturated tests
6. Wykeham Farrance w Wykeham Farrance DYNATRIAX DYNATRIAX Wykeham Farrance 88 How it Works m Software 88 Unsaturated EL Dt EEBEL EE maa lt a DYNATRIAX V Wykeham Farrance w Wykeham Farrance The SYSTEM DYNATRIAX Wykeham Farrance Dynatriax is a dynamic flexible modula reliable system that has been developed using the latest technologies and decades of experience in the dynamic soil testing field DYNATRIAX Wykeham Farrance The components in the system are shown here a source of clean dry compressed air is reguired to run the system and a supply of de aired water is also reguired DYNATRIAX Wykeham Farrance Mosters of Iechnoioau The picture shows that the system is based on standard triaxial components apart from a Pneumatic actuator b compact dynamic controller c Air receiver This makes it very easy to upgrade from a standard triaxial system DYNATRIAX Wykeham Farrance The Dynatriax is a axis closed loop control for axial load or displacement cell and back pressure Operating frequency up to 5 Hz Two dynamic load displacement options Up to 15mm 5 actuator Up to 25mm 14 kN actuator Two load frame option 50 and 100 kN Standard and user defined wave shapes that can replicate any vibration problem from violent earthquake to sedate ocean waves No piston
7. Heo Pressure Test Stage Test Sage EI d Stage st Segist dT Remove sane Remove sage 18 Load enolate Save temple Save terno Uy Beugmade Debug node Meus moat Varusi Caltration The software also allows you to customise the software to the language of you choice All the prompts and labels in the left column you enter the translation in the right hand column click apply and the software will run in the language you have chosen DYNATRIAX Wykeham Farrance Triaxial Cells The Controls Wykeham Farrance range of triaxial cells will allow testing of specimen sizes 38 50 70 100 8 150mm diameter The cell is eguipped to accept the following On sample transducers Bender elements Mid height pore water pressure transducers Submersible load cells Suction top caps TRI CELL plus DYNATRIAX V Wykeham Farrance y Wykeham Farrance WORKS DYNATRIAX Wykeham Farrance which will require a source of clean dry compressed air delivered at 800kPa continuous running pressure A source of de aired water is also required for saturating the specimen Both systems can be found in the Controls catalogue DYNATRIAX Wykeham Farrance Triaxial Dynamic System Personal All test information is entered into the Computer software see software section amp Software 1
8. Linearization 2072791 Choose the fit reguired Q and print calibration 1 9 av Reading 2 sheet for your records m Calibration in the software means we do a system calibration which includes the transducer the data logger and the pc If transducers are sent away for calibration they return with a calibration for the transducer only They still reguire calibration on the system that they will be used on DYNATRIAX 33 eham Farrance ters of Technolo LITT cdm 0 wo idm cdm Tekov oe Fitting Eguation displays the formula that has been applied to the measured data in qe order to calculate the fitted data This will only be shown for De Polynomial and Linear fit methods EE I EE DYNATRIAX Masters of Technology Wykeham Farrance Real time value Load Displacement Volume Reading Cell Pressure Back Pressure Pore Water Pressure Actuator Position mede 16 40 mm p ETT Test management aasan TERR r This panel contains functions for setting up the stages of a test specifying where to save the test data and loading a previous test to view the data along with a selection of utilities for managing the system before starting a te
9. Test routine information From information received the CDC SE controls the pressure load or stress Noam the specimen the volume change and Controller valve on the triaxial cell This information is sent to the CDC DYNATRIAX V Wykeham Farrance PC amp Software Axial Force Actuator ON OFF Valves Volume Change v Triaxial Frame Axial Displacement 5 Cell pressure Cell Pressure 2 5 Back Pressure 8 Volume Change Pore Pressure DYNATRIAX CONTROLS Wykeham Farrance Masters of Technology The CDC Compact Dynamic Controller compact self contained unit that 5 the three closed loop axis vertical load displacement cell and back pressure It provides automatic control of the system and drives the servovalves on the three axis and two on off valves one connected to the drainage line and one connected to the air main supply of the triaxial cell The CDC communicates with the PC through an Ethernet communication link 100Mbit s The controller has sixteen transducer input channels two using 24 bit ADC and 16 using 16 bit ADC Max servovalve frequency 70 Hz The CDC communicates with the pc via a LAN network Data recording processing amp plotting is continuously updated DYNATRIAX Wykeham Farrance
10. pressure control Cell and back pressure are controlled by digitally controlled valves with the transducers mounted adjacent to the valve The valves are mounted on an auxiliary air receiver with air filter to ensure clean air is supplied to the valves DYNATRIAX After dynamic stage has been completed it is possible to lock the axial actuator and compress the soil specimen to failure making use of the full capacity of the triaxial machine 50 or 100 kN e the full travel of the platen 100 mm DYNATRIAX 27 V Wykeham Farrance w Wykeham Farrance SOFTWARE DYNATRIAX Same confidence of Autotriax Pre installed Windows based Provides control of the following test modules 1 Saturation 2 Consolidation 3 Drained Undrained Stress Path 4 Dynamic stage 5 Standard static triaxial tests UU CU CD AN DYNATRIAX 29 Wykeham Farrance Main features Saturation by back pressure increments with volume change measurement Saturation by a drained ramp to a pre defined cell pressure and back pressure with volume change measurement Isotropic consolidation with automatic management of the volume change device to ensure continuous measurement of volume change Undrained or drained load controlled ramp to pre defined load stress or displacement strain controlled cyclic shear Undrained or d
11. allows the setting target cell back and air pressures DYNATRIAX eham Farrance Wykeham Farrance cent e es ER ea EE SWCC stage with control of air increments and decrements for determining wetting and drying curves DYNATRIAX Wykeham Farrance With DYNATRIAX Effective Stress Stress Path Ko Cyclic and Unsaturated stages can be performed automatically as individual stages or as a complete test routine from start to finish DYNATRIAX
12. e and all on specimen Transducers if selected DYNATRIAX Wykeham Farrance omes _ suan SORA UNT Bag weste zor Sc The test set has the SWCC stage DYNATRIAX EI EE ET EE e Temermene 8 e Wykeham Farrance ELA tea prm tim tore ae 78 EE ie ie T m exert rea A8 an PM nos 7 em linea ET so goes p a gos 3 n E A val 2 mj E i i xem OND ap da di de de ds d di d ci we a d de o the consolidation stage air water set to the desired matric suction DYNATRIAX NIR eham Farrance PET see Pati also Tett riens union She om Monon eur ETE MEE eu hoo wv er ea ome pan ma s p EE Ee a je Gergen vokime Soe pa per m 12 odes med Compson E nj s ctr pom 83 s A neu
13. efined for the DYNATRIAX Wykeham Farrance Mosters of Iechnoioa EEN mee Seer sn steh ee w amal ES seas Uds eel 193 Loading parameters nt 22222 8 1 yix ceeenempeme 0 dem coru 5 Tal v Termination conditions Mammie tal EE r the cyclic set up page you enter the type of test control mode of load displacement stress or strain The waveshape test freguency and loading values for compression and tension DYNATRIAX 3 Wykeham Farrance Masters of Technology Fr EEN EE a Manual Mode ro OER ET pa x Pa EN ef r n En REF pren 8 55 00 on OT pg pu EE TE ETT While the cyclic test is running live readings are displayed and calculations in total stress or effective stress are shown The waveshape is displayed on a rolling chart with maximum ten cycles displayed DYNATRIAX 45 Wykeham Farrance rence 10 On Soe iven
14. friction and highly accurate control of any type of vibration Capability to perform static effective stress and stress path dynamic and unsaturated soil triaxial tests On sample transducers can be used for bender element testing local strain and mid height pore pressure measurement DYNATRIAX Wykeham Farrance The system will allow you to investigate any vibration problem using the following waveshapes Sine Triangle Square User defined This allows the input of user defined or imported waveshapes User waveform cell for loading in a pre defined wave shape file A wave shape file is a udw file which is created using the program UDW Generator that accompanies the software This function is only available if you have selected User defined for the DYNATRIAX a M language Lenguage custonise Wykeham Farrance Then Cycle ENG Now Cole ENG Reine Rea ine value Lond Tead lane Reh Volume Fendi Gel Pressure Cal Pressure Beck Pressure Back Fore Water Pressure Bare Water Pressure alu Postien Transducer Poston Transducer Or Specinent On Spectnent On Specmer2 Or Specinen On Specimen3 Mid He Pressure Wi
15. he volume change transducer is controlled by the software the flow direction and by pass facilities are controlled with electronic valves mounted inside the lower chamber Green lights indicate the direction and a red light signifies the system is in by pass mode In the software the upper and lower limits are sets in values of ml and when these value are reached the system automatically reverses flow This gives infinite measurement of volume change during a test In the software the volume change is displayed to 0 1ml DYNATRIAX Wykeham Farrance Pressure Transducers Three are used in the system Two act as feedback control and data acquisition for cell and back pressure One for monitoring pore water pressure The pore water pressure transducers is mounted on a de airing block and fits onto the triaxial cell by a quick release coupling A bleed screw is fitted at the top to allow easy deOairing of the transducer All pressures are displayed to 1kPa DYNATRIAX Wykeham Farrance Masters of Techno Pore Water Pressure Measurement Pore water pressure is measured at the base of the triaxial cell using a pressure transducer and de airing block We have a valve either side of the pore water pressure block The inner valve to allow water to be flushed through the de airing block and to allow in situ calibration check of the pressure transducer DYNATRIAX Wykeham Farrance Cell 8 Back
16. ime DYNATRIAX Masters of Technology Manual Mode m te notu m EET emet tal Ek pe BE u EAT TE z Wykeham Farrance mem Seasrust 1 the w m In the Isotropic stage the cell pressure is adjusted to give the required effective stress when the pore water pressure has stabilised the start consolidation is clicked the solenoid valve in the back pressure line will open and the pore water pressure will reduce to equal the back pressure The graph will display either volume change or pore water pressure against time DYNATRIAX Wykeham Farrance Masters of Technology K Consolidation Manual Mode mm aj man Load control you can select Ko to run in compression or extension Drainage control you can select Ko in drained or undrained conditions Diameter control method you can specify the method that will be used to control the specimen diameter during the Ko stage Displacement Volume to monitor and control the diameter as calculated from the change in volume and height Radial belt to monitor and control the diameter as measured by a radial on specimen transducer DYNATRIAX Wykeham Farrance Monotonic Shear shear stage you have two options 1 Shear using the actuator this will
17. is pressure is transmitted to the water line in the pump and distribution panel which connects to the triaxial cell DYNATRIAX V Wykeham Farrance Triaxial Cell vailable for specimen 0 mm diameter Five pressure ports Two for pore water pressure Two for back pressure One fill empty An access ring with outlets for six internal transducers gt The access ring also generates extra height inside the cell to accommodate the submersible load cell and suction top cap Maximum working pressure 100 8 150mm cell 2000kPa 70mm cell 3500kPa DYNATRIAX CONTROLS Wykeham Farrance Masters of Technolog ransducer outlets Suction tube connected to the cell top Load cell Suction top cap um amp Drainage tube DYNATRIAX Wykeham Farrance Submersible Load cell or good accurate control of the reguested waveshape Measures the load directly applied to the specimen independent of the ram friction and changes in the cell pressure Capacities up to 25kN available Combined with the suction top cap the load cell measures the load directly applied to the specimen ensuring accurate measurement and control of the waveshape The beam welded construction means its oil filled inner chamber will not leak or drift due to ingress of water irrespective of the pressure generated in the triaxial cell the software the load is displayed to 1N DYNATRIAX Wykeham Farrance T
18. rained monotonic shear in compression or extension DYNATRIAX Wykeham Farrance Undrained or drained load controlled ramp to pre defined values of total vertical and horizontal stresses Determination of KO under drained or undrained conditions by vertically ramping at a pre defined rate of strain with specimen diameter control Load controlled cyclic shear to ASTM D 5311 standard Load or displacement controlled modulus and damping to ASTM D 3999 standard User defined load stress or displacement strain controlled cyclic shear Undrained or drained monotonic shear in compression or DYNATRIAX CONTROLS Masters of Technolog Wykeham Farrance Manual Control Panel EXER ie control panel allows the following su lw Manual control of the actuator Displacement 27 40 Manual control of the load frame CelPressurel A feedback 0 Manual control of the cell pressure 52 Back Pressure 1 feedback 0 Be Pore ate Manual control of the back pressure Pressure s ies 16 40 Manual control of solenoid valves uten ition PS mm O c EER ELM gt ges 55 96 Manual control of the volume change Displays live transducers readings The manual control is used to flush the system check for leaks and positioning the actuator and volume change before testing DYNATRIAX Wykeham Farrance Masters of eenoog l Linear Polynomial or
19. shear up to the maximum load of the actuator either 5 or 14kN 2 Shear using the load frame this will reguire locking the actuator this is usually used if after consolidation or a cyclic stage the specimen will shear higher than the actuator capacity If this option is selected the correct capacity load cell will reguired Locking mechanism for the actuator Screw up to touch the underside of the crosshead DYNATRIAX Masters of Technology Wykeham Farrance p Manual Mode Loana no spen AE IE EE se Fa viere vm we 7n caman ET eve ae sum Vie Reus BB nas postion AE 3 Ee mar Ma sien TI a Ed Op dip TEET 7 leis Prvej ed ned EE Me 980 Ha espera p ET Corrected ev pes Sresspahosanaa ET mal wl om a EE ds EE pom In the shear stage you enter the strain rate in hr compression or extension drained or undrained DYNATRIAX Wykeham Farrance Masters of Technology Manual Mode Em zi vlnka EE SE mm ra tra CUTU rel EN EE we R2 a
20. st A drop down box allows selection of test stages saturation consolidation stress path cyclic and shear stages DYNATRIAX Wykeham Farrance Saturation tion con Select the method that will be used for the saturation from a menu Cell pressure increment to saturate the specimen by increments of cell pressure only Back pressure increment to saturate the specimen by increments of cell pressure and back pressure Cell back pressure ramp to saturate the specimen by a continuous ramp of cell and back pressure This parameter is only needed for performing an automatic stage and so will only be available if the Auto stage check box selected DYNATRIAX Masters of Technology von rers sponenstp Sister Manual Mode TT erre ad sas TE Genet poem Wykeham Farrance 7 es PA rm EDS crea ost A a Ms ER i E ds la l pe HI a ME EN EN Ger uud if Ti lt lt In the saturation test control panel increments of cell and back pressure are managed The live transducer readings are displayed and all calculations are displayed A live graph of the test progress is displayed with options to show a graph of any transducer against t
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