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iETEK |
The iETEK makes through the thickness (out-of-plane) modulus measurements on intact brake pads at ambient temperatures using pre-loads from 100N to 800N. Single Load measurements are typically made at 700N while Cycle Load measurements measure the change in modulus for an operator selected range. See SAE specification J3175.
In addition to Modulus measurements at a single load, the iETEK is capable of making measurements for a range of pre-loads. The operator initially make a measurement at a single load, then clicks a button to switch to cycle cload.
The images above illustrate the load dependent modulus of a friction material (right) compared to most other materials such as acrylic or metals (left).
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Dynamic
modulus (Young's Modulus) values are calculated for up to 8
positions per pad. Total thickness and signal loss of the pad are
automatically measured for each position. Data is written to a
Microsoft Excel® file with one row of data per pad, allowing easy
comparison for batches of pads. An automatic counter increments the
part number tracking specific parts and speeding measurement.
Several options include rapid measurement mode, providing the user a
selected time interval between positions on a pad. An optional foot
pedal is also available to replace some keystrokes.
Features