Stiffness measurement method and device
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United States of America Patent
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Apr 11, 2017
Grant Date -
May 14, 2015
app pub date -
May 31, 2013
filing date -
May 31, 2012
priority date (Note) -
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Abstract
A calculating device of the stiffness measurement device pressurizes an object to be measured with a predetermined pressure and the stiffness of the object to be measured in the squeal frequency band is calculated based on an inclination of a stress-displacement performance curve immediately after a start of depressurization after the pressurization. According to this device, there is no need to oscillate the object with a high frequency band and there is no need to enhance the stiffness of the housing of the measurement device, which leads to a downsizing of the device. Further, there is no need for measuring of acceleration speed of the object to be measured and accelerator can be eliminated to reduce the cost of the stiffness measurement device.
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