Sine processing | Dewesoft

STRUCTURAL DYNAMICS CHARACTERIZATION,
DURABILITY AND FATIGUE TESTING, DESIGN VALIDATION AND QUALIFICATION.
PR ODUC T DATA
SINE2019 - V1.1.
STRUC TUR AL DYNAMICS
SINE PROCESSING

INTRODUCTION
APPLICATIONS
Sine processing tests enable the detection, identification, and analysis of the tested products’
ability to function in a vibration environment, fatigue life, resonant frequencies or even squeak
and rattle sound output (NVH).
It is used to validate and qualify product designs and to establish operational limits in a range of
industries:
• Aerospace, e.g. launch system providers or satellite manufacturers.
• Automotive, e.g. engine mounted components.
• Defense, ground transport, and any manufacturer of larger structures that have limited room
for failure and must perform perfectly on deployment.
FUNCTIONALITY
Sine vibration testing applies a single frequency to a test item and selectively excites resonant
structures within the device. In a swept sine test a vibration sine tone is ramped up and down
through a range of frequencies and for a specified rate and duration.
Real-time calculation and functions of the excitation frequency:
• Detection of amplitude, frequency, and phase of the vibration reference
• Extraction of harmonic components (Peak and RMS) of all measured signals
• Extraction of the overall broadband signal (Peak and RMS) level of all measured signals
• Calculation of transfer function (FRF, coherence, etc.) and the total harmonic distortion (THD)
between the reference signal and any point measured on DUT.
Sine processing is a tool to perform structural tests on large structures. Identify and analyze
natural frequencies of such structures by exciting them with a sweep of single frequencies,
that are being tracked by the Dewesoft X software plugin using COLA signal from your shaker.
As desired output, Sine processing returns the structural resonance frequencies, amplitudes,
phase, THD of response and also transfer functions between excitation and response points.
Dewesoft X3 software – with the Sine processing plugin – is the most powerful structural
analysis tool, supporting the evaluation of responses and transfer functions on an unlimited
number of channels, all done in real-time. A valuable tool for manufacturers, designers, and
engineers.
Integrate and synchronize your data acquisition system seamlessly with your shaker and perform
a powerful evaluation of structural properties in real-time by using the Dewesoft Sine processing
plugin. Set up in just a few steps and start measuring right away.
SOFTWARE
COLA
ACCELEROMETERS
SHAKER
DEVICE
UNDER TEST
VIBRATION CONTROLLER

KEY FEATURES
UNMATCHED POWER OF
CALCULATION
Runs octave and FFTs simultaneously on all
channels and all in real-time.
UNLIMITED NUMBER OF
CHANNELS
Supports real-time calculation on an unlim-
ited number of channels.
REAL-TIME CALCULATION
Peak, RMS, THD, phase, transfer functions for
each available point in real-time.
DATA EXPORT
Data can be exported in virtually any data
format used for NVH analysis.
ONLINE AND OFFLINE
ANIMATION
Determine the quality of results - anima-
tion of structure in all three directions with
different projections during (and after)
measurement.
COMPLETE SINE
PROCESSING TESTS
Directly integrates with your existing shaker
and controller, needing only the COLA signal
to sync perfectly.
DIFFERENT MODES OF
FREQUENCY DETECTION
Zero crossing and Hilbert transform for
detecting the exact frequency of the sweep
produced by the shaker controller and driv-
ing the shaker through an amplifier.
STORE AUTOMATICALLY
Automatic storing on desired trigger condi-
tions.
TEDS SUPPORT
Save time by using teds accelerometers
which are supported by Dewesoft X3 and on
all Dewesoft hardware.
EASY TO SET UP AND USE
Simply connect the accelerometers and
COLA signal, assign the correct channels and
start measuring.
DEWESOFT QUALITY AND
FLEXIBILITY
Simply add additional parameters to the
same measurement system and expand
your measurement chain in seconds.
FUTURE-PROOF APPLICATION
Lifetime free upgrades and support.

DAQ SYSTEM - SIRIUS ACC TYPE INPUT
Inputs
Input types
Voltage, IEPE
ADC Type 24bit delta-sigma dual core with anti-aliasing filter
Sampling Rate Simultaneous 200kS/sec
Ranges (Dual Core Low Range) ±10V (±500mV) ±500mV (NA)
Input Accuracy (Dual Core) ±0.1% of reading ±10(1)mV ±0.1 of reading ±1(NA)mV
Dynamic Range@10kS (Dual Core) 140 dB (160 dB) 135 dB (NA)
Typ. SNR@50kS (Dual Core) 107 dB (125 dB) 100 dB (NA)
Typ. CMR @ 50Hz/1kHz 140/120 dB 140/120 dB
Gain Drift Typical 10 ppm/K, max. 30 ppm/K
Offset Drift Typical 0.5 μV/K + 2 ppm of range/K, max 2 μV/K + 10 ppm of range/K
Gain Linearity <0.02%
Inter Channel Phase-mismatch 0.02° * fin [kHz] + 0.1° (@ 200 kS/sec)
Channel Cross talk >160 dB @ 1kHz
Input Coupling DC, AC 0.1 Hz,1Hz
Input Impedance 1 MΩ (270kΩ for AC coupling ≥ 1Hz) in parallel with 100pF
Overvoltage Protection In+ to In-: 50 V continuous; 200V peak (10msec)
IEPE mode
Excitation 2, 4, 8, 12, 16 or 20mA
Compliance voltage 25 Volt
Output Impedance >100 kΩ
Sensor detection Shortcut: <4Volt; Open: > 19Volt
Additional Specifications
Input connector BNC BNC
TEDS support IEPE mode only
SPECS
DEWESOFT WORLDWIDE:
Austria, Brazil, Belgium, China, Den-
mark, France, Germany, Hong Kong,
Italy, India, Russia, Singapore, Sweden,
UK, USA - partners in more than 50
countries
HEADQUARTERS
Gabrsko 11A, 1420 Trbovlje, Slovenia
+386 356 25 300
www.dewesoft.com
support@dewesoft.com
or sales@dewesoft.com
FIND YOUR SALES OFFICE AT:
dewesoft.com/support/distributors
SOFTWARE: DEWESoft X3
Recommended
Processor:
Intel Core i7 with 4 Cores (3rd
generation or higher)
RAM: 8 gigabyte (GB)
Hard drive: Solid-state drive (SSD)
Graphic card: Compatible with DirectX 11
Minimum display
resolution
1280x720 (HD Ready)
Operating system: Windows 10 64-bit
*Actual requirements may be different due to specific
setup configuration.
RELATED PRODUCTS
• Modal analysis
• Shock response spectrum (SRS)
• Octave analysis
• FFT
TYPICAL CONFIGURATIONS
Dewesoft sine processing:
• SIRIUS dual-core modular 8xAcc - R8 dual-core
64xAcc
• 8-64x Dewesoft 13TI-50G-1 triaxial accelerometer
• 8-64x 6824A Triaxial cable 4pin to 3BNC
• Dewesoft sine processing plugin
Optional:
• Dewesoft I3T-50G-1 triaxial accelerometer
* for more than 64 channels, more units of this same
configuration is added
LEARN MORE:
https://dewesoft.com/applications/
structural-dynamics/sine-reduction-test

Sine processing | Dewesoft

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