DMTA-10055-01EN, Rev. A, February 2015
Calibration
167
Figure 9-17 Using the Peak Memory feature to find the BIP
5.
Hold the probe stationary once the signal is peaked up and mark the side of the
transducer wedge directly over the 0 mark on the block.
This is the BIP, the point at which the sound leaves the wedge and enters the
material with maximum energy.
9.8.2
Verifying the Refracted Angle
The expected refracted angle of the probe should already have been entered in the
EPOCH 650 in the initial steps of the calibration procedure. Although the wedge may
be marked 45°, for example, the actual refracted angle could be slightly different due
to the properties of the test material or the amount of wear on the wedge. It is
necessary to verify the actual angle. This ensures that the EPOCH 650 sound path
calculations are accurate.
To verify the refracted angle
1.
Position the probe over the appropriate angle mark on the block (45° in this
example).
Summary of Contents for EPOCH 650
Page 12: ...DMTA 10055 01EN Rev A February 2015 List of Abbreviations xii...
Page 30: ...DMTA 10055 01EN Rev A February 2015 Introduction 18...
Page 54: ...DMTA 10055 01EN Rev A February 2015 Chapter 1 42...
Page 84: ...DMTA 10055 01EN Rev A February 2015 Chapter 3 72...
Page 126: ...DMTA 10055 01EN Rev A February 2015 Chapter 5 114...
Page 148: ...DMTA 10055 01EN Rev A February 2015 Chapter 7 136...
Page 154: ...DMTA 10055 01EN Rev A February 2015 Chapter 8 142...
Page 236: ...DMTA 10055 01EN Rev A February 2015 Chapter 10 224...
Page 332: ...DMTA 10055 01EN Rev A February 2015 Appendix B 320...
Page 342: ...DMTA 10055 01EN Rev A February 2015 Appendix C 330...
Page 346: ...DMTA 10055 01EN Rev A February 2015 Appendix D 334...
Page 362: ...DMTA 10055 01EN Rev A February 2015 Index 350...
