Tantalum Nitride Acoustic Emissions

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[H2Dot] Data Sets

Several Acoustic Emissions were collected in a laboratory setting, using a diamond-tipped probe to impact a film of tantalum nitride deposited on sapphire. How the data sets were obtained is described in Provenance.

All data sets were collected with an S9220 Physical Acoustics sensor, with 60dB amplification, and at a sampling rate of 20MHz.

If you want to download any or all data sets, see Download Information.

Table of available data.
Sensor Location Ampl (dB) Fs (MHz) MATLAB ASCII
S9220 upper surface 60 20 ae1 ae1a
S9220 upper surface 60 20 ae3 ae3a

[H2Dot] Provenance

[H3Dot] Specimen

Ta2N was deposited onto (112bar0) sapphire using a DC magnetron sputtering system using a tantalum target with argon and controlled amounts of nitrogen as a carrier gas.

[H3Dot] Equipment

This data was collected during a nanoindentation process, performed by a continuous micromechanical testing device developed at IBM.

[H4Dot] Sensor Mounting

The S9220 sensor was mounted directly above the specimen. (The diamond-tipped probe approached from below).

[H4Dot] Amplifier

60 dB amplification.

[H4Dot] Oscilloscope Settings

Data was collected on a Tektronix oscilloscope.

[H3Dot] Data Handling

[H3Dot] Thanks

To Professor Gerberich of CEMS for permission to use his data. And to David Bahr, also of CEMS, who collected the data and patiently explained material science concepts to EE personnel.

[H2Dot] Download Information

The data sets described in the above table are available for download from our ftp data archive. Click on any given filename, and your web browser should download the corresponding (compressed) data set to your computer.

All of the data sets have been compressed using Info-Zip's zip utility. For a description of data formats, including links to free Info-Zip utilities, see Formats.

Experience suggests that Info-Zip compresses our MATLAB files by a factor of about 20:1, and ASCII files about 40:1. Keep this in mind when downloading data.