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<TD><img src="grafisch/g047.jpg" width="265" height="114" alt="imce, RFDA non-destructive testing" name="RFDA"><br>
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<a href="#anch1">software</a> | <a href="#anch2">hardware</a> | <a href="#anch2">set-up</a></font></TD>
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<h3><IMG SRC="grafisch/dot.gif" WIDTH="1" HEIGHT="5" BORDER=0><br>
THE IMPULSE EXCITATION TECHNIQUE</h3>
<P>The Resonant Frequency and Damping Analyser is based on the impulse excitation
technique. The sample is put to vibration using an impulse excitation.
A microphone or pieze-electric transducer is used to pick up the vibrations.
Most vibrations are complex and built up with different frequencies. The
electrical signal of the transducer is adapted and amplified so the software
cancalculate the different resonant frequencies with their damping loss
factor.</P>
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<TD BGCOLOR="#003300" colspan=2 align=center><FONT SIZE=+1 COLOR="#ffffce" WIDTH=450><B>software<B></b></b></FONT>
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<TD><B>RFDA-MF software</B><BR>
<UL>
<LI>Multiple frequency with damping measurement
<LI>Elastic properties measurement: Young's modulus, Shear modulus, Poisson's
Ratio
<LI>Sample rate: 250 kHz
</UL>
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<TD><B>RFDA-MF-PU software</B> <BR>
<UL>
<LI>Multiple frequency with damping measurement
<LI>Elastic properties measurement: Young's modulus, Shear modulus, Poisson's
Ratio
<LI>Sample rate: 250 kHz
<LI> Adjustable power output control for controlling excitation force
(in combination with the PU-EX1 Power Unit)
</UL>
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<TD BGCOLOR="#003300" colspan=2 align=center><FONT SIZE=+1 COLOR="#ffffce" WIDTH=450><B>hardware<B></b></b></FONT>
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<TD><IMG SRC="grafisch/g032.jpg" WIDTH="150" HEIGHT="110" BORDER=0></TD>
<TD><B>System 21</B><BR>
<UL>
<LI>1 channel analog input unit
</UL><IMG SRC="grafisch/dot.gif" WIDTH="1" HEIGHT="5" BORDER=0><BR>
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<TD><IMG SRC="grafisch/g033.jpg" WIDTH="150" HEIGHT="120" BORDER=0></TD>
<TD><B>System 23</B> <BR>
<UL>
<LI>2 channel analog input unit
<LI>2 excitation outputs
<LI>1 channel adjustable excitation output (in combination with PU-EX1
Power Unit and RFDA-MF-PU software)
<LI>4 channel digital input 3 - 24 VDC
<LI>4 channel digital output 24 VDC - 0.5 A
</UL>
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<TD><IMG SRC="grafisch/g038.jpg" WIDTH="150" HEIGHT="110" BORDER=0></TD>
<TD><B>PU-EX1</B> <BR>
<UL>
<LI>Software adjustable power unit for automatic excitation.
</UL>
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<TD BGCOLOR="#003300" colspan=2 align=center><FONT SIZE=+1 COLOR="#ffffce" WIDTH=450><B>set-up<B></b></b></FONT>
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<TD valign=top><B>Universal Measuring Unit</B> <BR>
<UL>
<LI>vibration isolated measuring table <br>
- UMU-A4: 320 x 220 mm<br>
- UMU-A3: 440 x 320 mm
</UL>
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<TD> </TD>
<TD valign=top><B>Rectangular bars and cylinders<br>
</B></TD>
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<TD valign="top"><img src="grafisch/g029.jpg" width="150" height="70" border=0></TD>
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<ul>
<li>High precision wire support<br>
sample length : 20 - 100 mm<br>
sample width :3 - 30 mm<br>
<br>
</ul>
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<TD valign="top"><img src="grafisch/g031.jpg" width="150" height="80" border=0></TD>
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<ul>
<li>Wire support<br>
sample length : 20 - 300 mm<br>
sample width : 3 - 130 mm
</ul>
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<TD valign="bottom"><img src="grafisch/g042.jpg" width="150" height="120" border=0></TD>
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<ul>
<li>Wire support for small samples <br>
sample length: up to 60 mm<br>
sample width: 1-10 mm<br>
sample diameter: 1-10 mm <br>
</ul>
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<TD valign="bottom"><img src="grafisch/g039.jpg" width="150" height="120" border=0></TD>
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<ul>
<li> Wire support for the measurement of the longitudinal vibration mode
<br>
sample length: up to 250 mm<br>
sample diameter: up to 30 mm<br>
</ul>
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<TD valign=top><B>Disc supports<br>
</B></TD>
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<TD valign="top"><img src="grafisch/g028.jpg" width="150" height="90" border=0></TD>
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<ul>
<li>High precision wire support<br>
sample diameter : 20 - 200 mm<br>
<br>
</ul>
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<TD valign="top"><img src="grafisch/g030.jpg" width="150" height="100" border=0></TD>
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<ul>
<li>Wire support<br>
sample diameter : 35 - 400 mm <br>
<br>
</ul>
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<TD valign="top"><img src="grafisch/g040.jpg" width="150" height="120" border=0></TD>
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<ul>
<li>Wire support for small discs <br>
sample diamter: 8 - 60 mm<br>
</ul>
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<p><IMG SRC="grafisch/g043.jpg" WIDTH="150" HEIGHT="120" BORDER=0></p>
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<TD valign=top><B>Automatic excitation system</B> <BR>
<UL>
<LI>for an accurate and reproducible excitation of the sample
</UL>
<p>Optionally, the excitation system can be completed with the PU-EX1 Power
Unit and RFDA-MF-PU software to become an adjustable excitation force.
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<TD colspan="2"><a href="../Default.htm" target="_top"><br>
<img src="grafisch/g001.gif" width="84" height="53" border=0></a> </TD>
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<P><FONT COLOR="#660000">The Resonant Frequency and Damping Analyser is
based on the impulse excitation technique. This impulse excitation technique
is essentially non-destructive, can be applied at high temperatures and
in aggressive atmospheres, and requires no special shape for the test
specimen.</FONT><BR>
<P>
<CENTER>
<A HREF="p500_2.htm" TARGET="_top"><IMG SRC="titels/h007.gif" WIDTH="86" HEIGHT="31" ALT="see case study" BORDER=0></A>
</CENTER>
<BR>
</P>
<IMG SRC="grafisch/dot.gif" WIDTH="1" HEIGHT="5" BORDER=0><BR>
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<TD BGCOLOR="#003300" colspan=2 align=center><FONT COLOR="#ffffce"><B>RFDA-HT1750</B></FONT></TD>
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<TD width=130 align=left><IMG SRC="grafisch/g022.jpg" WIDTH="164" HEIGHT="260" ALT="RFDA-HT1750" BORDER=0></TD>
<TD width=336 align=left valign=top>
<P> </P>
<UL>
<LI>Frequency and damping analysis as function of temperature
<LI>Elastic properties as function of temperature
<LI>Measurement during heat treatment <BR>
(sintering, ...)
<LI>Max. Temperature :1750 °C
<LI>Normal atmosphere
<LI>Chamber size: <BR>
210 x 115 x 105 mm<SUP>3</SUP> (l x w x h)
</UL>
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<TD BGCOLOR="#003300" colspan=2 align=center><FONT COLOR="#ffffce"><B>RFDA-HTVP 1750</B></FONT></TD>
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<TD width=205><IMG SRC="grafisch/g021.jpg" WIDTH="170" HEIGHT="205" ALT="RFDA-HTVP1750" BORDER=0></TD>
<TD width=295 align=left valign=top><P> </P>
<UL>
<LI>Frequency and damping analysis as function of temperature
<LI>Elastic properties as function of temperature
<LI>Measurement during heat treatment (sintering, ...)
<LI>Max. Temperature : 1750°C
<LI>Inert atmosphere (Ar, N2)
<LI>Chamber size : dia. 180 x 200 mm<SUP>2</SUP>
</UL>
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<TD colspan="2" align=center><a href="../Default.htm" target="_top"><br>
<img src="grafisch/g001.gif" width="84" height="53" border=0></a></TD>
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<P><FONT COLOR="#660000">The impulse excitation technique has many different applications. Integrated Material
Control Engineering NV can design for each customer the best solution for his application.
The complete integration of the RFDA measuring systems, within the customers existing
quality control system or within the production environment belongs to the know-how and
experience of IMCE NV.</FONT>
</P><IMG SRC="grafisch/dot.gif" WIDTH="1" HEIGHT="5" BORDER=0><BR>
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<TD BGCOLOR="#003300" colspan=2 align=center><FONT COLOR="#ffffce"><B>QUALITY CONTROL (Engine Blocks)</B></FONT></TD>
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<TD width=170 align=left><IMG SRC="grafisch/g020.jpg" WIDTH="170" HEIGHT="220" ALT="RFDA-HT1750" BORDER=0></TD>
<TD width=280 align=left valign=top><P> </P>
<UL>
<LI>100% production control of CGI engine blocks
<LI>Fully automated classification according the graphite structure
</UL>
<IMG SRC="grafisch/dot.gif" WIDTH="280" HEIGHT="1"><BR>
<CENTER><A HREF="p500.htm" TARGET="_top"><IMG SRC="titels/h007.gif" WIDTH="86" HEIGHT="31" ALT="see case study" BORDER=0></A></CENTER>
</TD>
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<TD colspan="2" align=center><a href="../Default.htm" target="_top"><br>
<img src="grafisch/g001.gif" width="84" height="53" border=0></a></TD>
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<TD BGCOLOR="#003300" align=center width=450><FONT COLOR="#ffffce"><B>PROCESS
SOFTWARE (p.e. foundry)</B></FONT></TD>
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<TD>
<P> </P>
<UL>
<LI>Process control
<LI>Data collection and data displaying<BR>
(Spectrometer, LECO, weight, Temperature,...)
<LI>Connection to PLC, data bank, ...
<LI>Automatic report generation
</UL>
</TD>
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<TD><a href="../Default.htm" target="_top"><br>
<img src="grafisch/g001.gif" width="84" height="53" border=0></a></TD>
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