BS ISO 6721-9:2019 pdf free.Plastics一Determination of dynamic mechanical properties. Apply a sonic pulse to the specimen, and measure the arrival time tA (s) to an accuracy of士0,5 us.Repeat the measurements described in 9.3.1 and 9.3.2 for the same specimen at least three different separation distances between the transducers. In order to get good accuracy, the values of the distance should...
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