Precise measurement of specimen dimensions is critical for obtaining accurate stress and modulus results, but the typical specimen measurement process can be time consuming and prone to data entry errors.
The specimen measurement process usually requires the operator to take the dimensional measurements of each specimen with a handheld caliper or digital micrometer, and then manually input that data into the testing software. Depending on the testing standard, the operator may be required to take multiple readings of each dimension; for example, at three different points on the specimen’s width and thickness.
Manual data entry is always prone to error, so this method of sample measurement carries some risk that erroneous data could make its way into your data set and affect your test results.
All you need is a compatible digital micrometer or caliper with an automatic data entry interface. Plug it into your lixian test system and the test software will recognize the device and allow you to use it to record sample dimensions. Once the micrometer is connected,
simply measure the sample dimensions as usual, then click a button on the micrometer to send the digital measurement directly to the software - allowing you to skip the manual data entry step entirely. If two devices are needed - for example,
one for width measurement and another for thickness - an interface box can be included to connect both for simultaneous use.
These micrometers can also be configured with a foot switch, allowing you to enter sample dimensions into the software with the tap of a foot switch.
In the software, you can also set the number of readings required. In the example above, we set it to require three readings for the sample width and thickness. In addition, the reported results of the readings can be configured to report the average, minimum, maximum, or median.
