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7.1.3 Overview of Operation Steps
This section will provide an overview of the steps involved in operating the system and performing
a creep or stress rupture test. The following steps assume an authorized operator has already set
up the system properly, calibrated and balanced the frames, and calibrated all accessory items, e.g.
thermocouples or extensometers.
Test Specifications:
In order to perform a test, the operator must first define the test parameters,
such as specimen temperature and stress. We refer to this description as the Test Specification. The
test specification can be used for more than one test. The specification is automatically retained in
the specification subdirectory and is available for use whenever needed. A naming protocol should be
developed for the test specification to help the operator select the appropriate specification before
starting a test. It is helpful to name specifications in a way that describes test parameters for that
particular specification.
Creating a Specimen:
The information about the specimen to be tested must be recorded prior to
testing as well. This is done by Creating a Specimen, and each specimen is a distinct entity. Since all
identification and archival information is based on the specimen name, each must be unique and
different. Once a specimen name has been assigned, it cannot be used for another test. Each lab
should develop a naming system that will best suit the record-keeping practices in use. Any number of
specimens can be created, and they will remain available in the computer until tested.
Test Conditions:
Each test specification will include any number of Test Conditions. Information under
this section defines test parameters and allows the operator to create a family of test conditions under
one specific name. For example, it may be convenient to create a series of conditions that are identical
except for temperature or stress level. In this case, a single specification name can be used to define all
tests for a particular type of material or common product line. Therefore, a naming protocol for the test
condition that describes the test parameters is helpful when the operator needs to select a condition.
To begin, execute, and terminate a test:
1. Test Specifications: Define test specifications before setting up the specimen type. Refer to
Section 7.2.
2. Creating a Specimen: Enter the information about the specimen. Refer to Section 7.3.
3. Testing: After the test specifications are entered and the specimen setup is complete, testing
may begin. Refer to Section 7.4.
4. Stopping a Test: Tests in progress may be stopped at the user’s request. Refer to Section 7.5.
5. Viewing Test Results: The user may view results from current and previous tests. Refer to
Section 7.6.
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Страница 95: ...95 Once these steps are completed the thermocouples will be properly attached to the specimen...
Страница 109: ...109 Appendix C Default Values This appendix includes all the default values typically seen on a WinCCS tester...
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