Test result evaluating method and material tester
AssigneeShimadzu Corporation
InventorTohru MATSUURA
Life of this patent
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Abstract
An amplitude detecting method and a material tester are provided. As functional blocks of a program that is installed in a personal computer and is stored in a memory, a measurement noise eliminating part that eliminates measurement noise, a vibration noise eliminating part that eliminates vibration noise assumed to be caused by an inertial force according to a natural vibration according to reach of an impact of breakage or destruction of a test piece at the entire tester, an amplitude detecting part that detects the amplitude of a natural vibration superimposed in the data period used for evaluating material characteristics, and a display control part that controls display of an amplitude value of the natural vibration and a test result on the display device are included.
Claims18
An amplitude detecting method of detecting an amplitude of a natural vibration superimposed on test data based on a signal detected by a force detector in a material test applying a test force to a test subject by driving a load mechanism, the amplitude detecting method comprising:
- a maximum value/minimum value calculating process of acquiring a maximum value and a minimum value of the natural vibration superimposed on the test data in data of a time period in which there is a state in which the test force is applied to the test subject in the test data;
- and
- an amplitude determining process of determining the amplitude of the natural vibration on a basis of a difference between the maximum value and the minimum value acquired in the maximum value/minimum value calculating process.
A material tester comprising a control device that processes a signal detected by a force detector in a material test in which a test force is applied to a test subject by driving a load mechanism, wherein the control device comprises an amplitude detecting part comprising:
- a maximum value/minimum value calculating part acquiring a maximum value and a minimum value of a natural vibration superimposed on test data in data of a time period that is in a state in which the test force is applied to the test subject in the test data based on the signal detected by the force detector;
- and
- an amplitude determining part determining an amplitude of the natural vibration on a basis of a difference between the maximum value and the minimum value acquired by the maximum value/minimum value calculating part.
Dependencies are inferred from the claim text.