DTS30 – DYNAMIC TESTING SYSTEM
The DTS-30 is Universal Testing Machine (UTM), but not as most people know it. It does not conform to the “me too” attitude of most UTM manufacturers. The innovations featured on the DTS-30 are built on many years experience, developing, studying and using various universal testing machines from a number of manufacturers. The first thing you will notice about the DTS-30 is the absence of a reaction frame. The reaction frame most certainly exists, but it’s embedded in the test chamber. This provides a very sleek appearance, maximizes the space inside whilst reducing the space required outside. Since it is mandatory to control the test temperature of most pavement materials, e.g. asphalt, the test chamber is insulated and forms part of the temperature controlled cabinet. Most UTM manufacturers opt for an elaborate (and expensive) moveable crosshead, only to find that its range (and usefulness) is limited by the climatic chamber. The DTS-30 has a remotely positioned reaction shaft that adjusts the work space. But you won’t need to adjust it often because the servo-hydraulic actuator has 100m of stroke.
The temperature control unit attaches to the test chamber using a magnetic seal and can be wheeled away when not required or for servicing. This also makes servicing, replacing or upgrading the temperature control unit virtually effortless … it can be removed without dismantling the machine or disrupting the testing program.
The next thing you will notice is that it is bottom loading. Before this current crop of universal testing machines, many dynamic testing machines were bottom loading. More recently, the Asphalt Mixture Performance Tester (AMPT) changed the mindset of the testing community by highlighting the benefits of a bottom loading machine. Firstly, it is a neat, compact and integrated solution, that places all hydraulic components within easy reach … gone are the long hydraulic hoses that ran up and down the side of the machine and got in everyone’s way. They have been replaced by shorter hoses that connect the actuator to the hydraulic power supply that’s tucked neatly away behind the machine, under the test chamber.
Can’t see the Control and Data Acquisition System (CDAS)? That’s because it’s hidden neatly, in the cabinet in front of the machine. You won’t see a tangle of cables either; they enter the cabinet through the floor of the test chamber or through the back of the cabinet and connect to the CDAS. The door of the cabinet can be held ajar to allow transducers to be re-allocated or opened completely for servicing. Unused transducers can also be stored out of harm’s way.
Still not convinced about the merits of a bottom loading machine; no problem. The DTS-30 reaction frame is symmetrical; the servo-hydraulic actuator and reaction shaft can be interchanged to make the DTS-30 top loading.
Finally; there are a couple more features that are no obvious but well worth pointing out. The DTS-30 fatigue rated, servo-hydraulic actuator utilizes metal labyrinth bearings and seals. The labyrinth bearings and seals are designed to reduce friction and maintain low operating temperatures. The bearings experience little-to-no wear, operate at high speeds and offer a long service life.
The speed of the HPS pump motor is controlled using a variable-frequency drive (VFD), or inverter drive. This enables the motor to be slowed down, or turned off, when the oil flow from the pump exceeds the flow required by the actuator at any given time. This not only reduces noise and heat generation but also offers cost savings, by reducing power consumption. Furthermore, the HPS can operate at 50Hz or 60Hz
The DTS-30 Dynamic Testing System is compact, fully integrated and user and environmentally friendly. What makes it different makes it better!
The DTS-30 Dynamic Testing System is a servo-hydraulic testing machine utilizing digital control of a high performance servo valve to provide accurate loading wave shapes up to 100Hz. The DTS-30 can be operated in tension, compression dynamic loading and is suited to testing a diverse range of materials such as asphalt, soil, unbound granular materials, fibres and plastics.
The DTS-30 is underpinned by leading edge CDAS digital controller, TestLab software and a full complement of accessories … hardware and software in perfect unison.
CDAS Digital Controller:
The compact Control and Data Acquisition System (CDAS) delivers unparalleled performance, real time control and ultimate versatility in acquisition. The CDAS provides excellent waveform fidelity from integrated acquisition and control functions, with low level sampling at speeds of up to 200,000 samples per second simultaneously on all channels (using up to 64x oversampling) gives superior low noise performance and resolution of 20 bit over the full dynamic input signal range (no auto ranging required).
Developed with ultimate flexibility in mind, TestLab test and control software caters to all levels of operator experience. By use of pre-programmed “Method files”, an inexperienced operator can run a range of international test methods without the need for any programming. Moreover, a test “Wizard”, available with popular tests can guide the operator step by step based on a “recipe book” approach. Most importantly, the experienced engineer and/or researcher need not be constrained by the functions and analysis in the method files provided. The operator may, clone, modify and/or generate his/her own method file to suit their specific requirements. The Excel based data analysis offers the operator the flexibility to implement alternative analysis and customized reporting facilities.
TestLab allows for real time graphing of results and configurable real time transducer levels display with unprecedented clarity of results and analytical power.
A virtually limitless range of testing accessories is available for the DTS-16 system including, a range of climatic chambers, compression platens, indirect tensile fixtures, bending jigs, triaxial cells, transducers and other customer specified jigs and fixtures.