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Broadband measurement |
Waveform based source location |
Signal/Noise separation |
Store entire AE waveforms |
Active or passive measurement |
Digital signal processing |
Modular hardware & software |
GUI software environment |
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| Source Identification & Source Location |
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F-4000 ½Ã½ºÅÛÀº ÀûÀýÇÑ ¸ðµå¿Í ±×¿¡ »óÀÀÇÏ´Â À½¼ÓÀ» »ç¿ëÇÏ¿©,
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Digital Wave»çÀÇ B-1025 ŽÃËÀÚ´Â 50¿¡¼ 2000 kHz±îÁöÀÇ Á֯ļö ¹üÀ§¿¡¼
Á÷¼± ÀÀ´ä¼ºÀ» °¡Áö°í ÀÖ´Ù. ÀÌ ¼¾¼´Â extensional°ú flexual ¸ðµå¸¦ ÃøÁ¤Çϱâ
À§ÇØ Æ¯º°È÷ µðÀÚÀÎµÈ °ÍÀ¸·Î 6.35 mmÀÇ Á÷°æÀ» °¡Áö°í ÀÖ´Ù. |
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linear phase (Bessel) ÇÊÅ͸¦ »ç¿ëÇϰí ÀÖ´Ù. µ¶¸³µÈ Æ®¸®°Å ÇÊÅ͸µÀ¸·Î A/D
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F-4000 ½Ã½ºÅÛÀº 8ºñÆ® ȤÀº 12ºñÆ®(F-4012)ÀÇ µðÁöŸÀÌÀú·Î 60
MHzÀÇ
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Capture rate´Â PC ÇÏµå µð½ºÅ©·Î ÃÊ´ç 2¹é¸¸ ºñÆ® ÀÌ»óÀÌ´Ù.
ÆÄÇüÀº ¸®¾óŸÀÓÀ¸·Î ȹµæµÇ°í
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Fracture mechanics: |
Crack growth |
Source modeling |
Composite materials research: |
Ceramic, Polymer &
Metal Matrix |
Filament Wound |
Aging aircraft |
NDE
/ NDT / NDI |
Wave propagation |
Smart structures |
Hypervelocity impact studies |
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| Data
Acquisition |
Post
Test Analysis |
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| Data
Analysis |
Material
Analysis |
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| Analysis
Software Features
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Mode Identification |
Waveform Smoothing |
Waveform Zooming |
Zooming |
Digital Bandpass |
Filtering Frequency Analysis |
Theoretical Dispersion Curves (group and phase velocities) for isotropic or
Laminated Plates |
Theoretical Velocities Profiles for Isotropic or Laminated Plates (group velocities) |
Linear or Planar Source Location : Gaussian Cross-correlation Location Algorithms that
are threshold / gain independent |
Additional location algorithms using inputted voltage threshold or
manual cursor
positioning |
All location algorithms use materials database with theoretical velocities |
All location algorithms account for dispersion and any
velocity change due to anisotropic
nature of structure |
Data are fully exportable to Binary and ASCII formats |
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| Digital Signal Processing Built In
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FFT |
Hilbert Transform |
Smoothing |
Filtering |
Zeroing |
Gaussian Cross- correlation |
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C-7000 ½Ã½ºÅÛÀÇ
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Active Wave propagation
Å×Å©´ÐÀº ¿£Áö´Ï¾î¸µ ±¸Á¶¹°¿¡ acousto-ultrasonic ÆÞ½º ½ÅÈ£¸¦ ÁÖ°í ¹Þ´Âµ¥ ±Ù°ÅÇØ ÀÖ´Ù. Digital Wave»çÀÇ ½ÅÁ¦Ç° Laminated
Plate Wave Analyzer(LPWA)ÀÇ ÇÑÂ÷¿ø ³ôÀº Å×Å©´ÐÀº ¿¬±¸ÀÚ°¡ Àç·áÀÇ Æ¯¼º°ú
Á¶Á÷¿¡ ´ëÇÏ¿© ±íÀÌ °£ÆÄÇÒ ¼ö ÀÖ°Ô ÇØÁØ´Ù.
Digital Wave»çÀÇ ¼ÒÇÁÆ®¿þ¾î¸¦
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| Property Analysis
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The LPWA automatically calculates the A11, A22, D11, and D22 stiffness matrix
components for the studied material, rendering strength
properties in principle directions. |
By accurately measuring bulk and plate wave mode velocities material, the
LPWA detects
small density and modulus changes in bulk specimens,
which can profoundly impact
structural performance. |
By using pulse shape analysis tools which are unique to the LPWA,
delaminations
and debonds in a specimen can be clearly ID'd and
located. |
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| Quality Assurance
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Material properties can be measured in situ before, during and after
performance tests
such as stress-strain, temperature and fatigue |
Laminated composite material properties can be monitored throughout
curing process. |
Final quality control by verifying expected characteristics and inspecting
for damage. |
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Integrated Waveform Generator |
Real Time Waveform Display |
Post Test |
Laminated Plate Analysis |
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Composite Manufacturing |
Quality Assurance |
Process Control |
Materials Researches |
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| PA 2040 Broadband Acoustic Emission Preamplifier
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| B1025 Broadband Acoustic Emission Sensor
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DigitalWave »ç¹«½Ç |
2 channel system with industrial PC |
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Digital Wave »ç¹«½Ç |
KRISS¿¡¼ ÀÖ¾ú´ø Modal
AE¿¡ °üÇÑ ¼¼¹Ì³ª |
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