MTS Criterion 40 - Manual - Manual (Page 22)

MTS Criterion ® Series 40 Product Manual 22
Description
Introduction
Description
Every MTS Criterion Series 40 Material Test System is comprised of a load
frame, electronic frame controller, and testing software.
The load frame has a rectangular shape and includes a base unit and one or two
vertical columns. The two-column models have a fixed upper transverse beam.
The moving crosshead is driven by precision ball screws on the load frame. The
crosshead is coupled to the ball screw(s) with high-strength, precision ball nuts
and rides on the ball bearings. This configuration is very efficient in minimizing
friction and wear. The ball screws are preloaded. This feature removes the
backlash so that position can be measured with increased accuracy over non-
preloaded ball screws.
The load frame drive is located in the frame base. The drive motor is connected
to the lower end of the ball screws by a series of belts and drive pulleys. On the
two-column machines, motor rotation causes synchronous rotation of the ball
screws, which causes the crosshead to move up or down. On the single-column
machines, motor rotation causes the rotation of the single ball screw, which
causes the crosshead to move up or down.
Frame Controller
The frame controller is responsible for the following:
• Provides main data and signal processing power.
• Detects the activation of limit switches.
• Provides the interface between the software (computer) and the frame.
• Provides digital servocontrol for speed and position accuracy.
• Automatically identifies accessories, including load cells and
extensometers, with the self-identify feature.
• Communicates with the handset.
• Provides programmable data acquisition rate (up to 1000 Hz maximum) .
• Commands the motor.
Software
MTS testing software has various method templates available. The method
templates in the General Testing Package provide a starting point in configuring
test methods that conform to your testing needs. The General Testing Package is
separated into four specific testing categories:
• MTS Tensile
• MTS Compression
• MTS Flex
• MTS Peel-Tear
Criterion_product manual.book Page 22 Monday, July 28, 2014 3:52 PM