Axial Testing System
Model CS4130

For more information or pricing on any of these products, please contact us.

BASIC SYSTEM OVERVIEW
The machine is a versatile, fully automated, single axis, closed-loop hydraulic testing system specifically designed to perform tests on soils and asphalt concrete mixtures over a wide range of stresses and frequencies. The equipment has sufficient flexibility to perform in a variety of environments: university research, special tests or standard tests as required by state DOT’s and other government agencies. The design ensures the easiest possible interface with the operating technician. The system will perform the tests and collect the data with a minimum of user input and knowledge. The testing system will perform the following tests:

• Dynamic (sine, square and triangular wave)

• Creep

• Repetitive loading (haversine)

• Constant rate (ramp)

• Random loading

• Custom software templates for standard and special tests that fall within the static and dynamic capabilities of the system are available.

Features

• Compact size – 61 ½ ” wide by 41” deep

• Extremely quiet hydraulic power supply. The pump is encloses in an acoustically dampened outer cabinet for noise reduction.

• Rigid steel cross heads are machined from 4” thick solid steel billets.

• Heads are supported by three 3” dia. hard-chromed plated steel columns.

• Durable 11 gauge (.125 in.) thick 304 stainless steel console top.

• Totally integrated load frame, hydraulic power supply and control system. The hydraulic hoses, transducer wiring, hydraulic system falls within the confines of the cabinet for easy installation and service, noise reduction and a neat appearance.

The testing system includes the following major components: CONTROL AND DATA ACQUITISION SYSTEM computer system with digital control and data acquisition software transducer signal conditioning precision power supplies hydraulic controls TEST UNIT load frame hydraulic actuator servo valve displacement transducer load cell hydraulic system actuator safety system (manifolds and solenoids) gauges

CONTROL AND DATA ACQUISITION SYSTEM
The testing system design concept is for high production testing requiring constant operator interface between the control cabinet and testing machine. Monitor, keyboard and controls are positioned at a convenient height to allow the operator to insert specimens, view the monitor and reach the controls with a minimum of effort and movement.

Specifications

• Centerline height of monitor allows convenient viewing while standing or siting on a drafting stool.

• Table height – 37 inches

• Signal conditioning and controls are mounted in two drawers for accessibility from the front of the cabinet.

• A tower-mounted computer is installed in the right side of the control cabinet for easy accessibility and to maximize table space.

• A positive internal air supply is provided to prevent airborne contamination of the computer. A 200-CFM thin muffin fan is
  installed on the side of the computer and blows through a replaceable, extended surface air filter.

COMPUTER SYSTEM

• IBM Compatible Workstation

• Intel P4 2.4 GHz. CPU

• Intel 845 WN Motherboard with 5 PCI Slots

• 256MB SDRAM

• Geforce2 MX-400 64MB Video

• Western Digital 40GB Hard Drive

• Teac 1.44MB 3.5in. Floppy Drive

• 52X CD ROM Drive

• Iomega 250MB Zip Drive

• Intel On-Board Sound

• Logitech Internet Keyboard

• Logitech Wheel Mouse

• 4-USB Ports, 1-Parallel, 1-Serial, 2-PS/2

• Microsoft Windows 2000 Pro

• Mid-Tower P4 Case with 300 Watt Power Supply

• 17” high resolution monitor

• National Instruments, multifunction I/O - 16 bit, 16 analog inputs. (PCI bus)

• Computer Boards 48 digital I/O bits high drive output (64MA sink) PCI bus

• Control, solid state relays, connector and all internal wiring.

CONTROL AND DATA ACQUISITION SOFTWARE
The software will:

• Control and hydraulic actuator under feedback close loop from any of the input channels acquire data on all channels.

• Monitor channels to provide fail safe limits

• Test data is logged to a spreadsheet file using software timing which provides a time and cycle stamp for each channel collected. Data can be collected on a time or cycle basis which permits collection of only the key data and not extraneous data. The data files are tab-delimited text files therefore the data are viewed and analyzed most easily with a spreadsheet program such as MS Excel. Routines (macros) can easily be written to reduce the spreadsheet data based on any new standards or techniques that are developed.

The software will also:

• Provide monitor displays of the input channels in volts and engineering units.

• Provide scopes to monitor tests

• Include calibration routines

• The software has adaptive control capabilities for repetitive tests to minimize effort.

For more information or pricing on any of these products, please contact us.