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<p>shapes like rectangular bars, cylindrical rods and disc shaped samples. The measurements can be performed at room temperature or at elevated temperatures (up to 1700&nbsp;°C) under different atmospheres.</p>

<p>The measurement principle is based on tapping the sample with a small projectile and recording the induced vibration signal with a <a href="page.php?w=piezoelectric_sensor">piezoelectric sensor</a>, <a href="page.php?w=microphone">microphone</a>, <a href="page.php?w=Laser_Doppler_vibrometer">laser vibrometer</a> or <a href="page.php?w=accelerometer">accelerometer</a>.</p><p>
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