dats options - hoskin scientifique€¦ · nvh / refinement waterfalls – ... sharpness roughness...

:: working at the heart of test & measurement

DATS Options

www.prosig.comWorking at the heartof test & measurement

DATS – THE A TO Z OF SIGNAL PROCESSING

NVH / Refinement



NVH / Refinement

Waterfalls– Generate waterfalls from tacho or speed signal– Average waterfalls

Orders– Calculate orders from waterfall

Sound Quality– Metrics including loudness (Zwicker & Stevens), AI, Spectral

Balance and so on



Rotating Machinery



Rotating Machinery

Time sampled data Angular sampled data Waterfalls Order extraction Torsional vibration

– Twist– Angular Vibration



Fatigue Analysis



Fatigue Analysis

Rainflow Counting Peak and Trough Count Stress Life Prediction Strain Life Prediction Weld Life Failure Probability S-N Fatigue Curve Generation Materials Database with Editor Histograms



Structural Animation



Time and frequency Animation Time and frequency sweep for Animation Model Editor Import of model Data (FE, CAD) Export of Animation (avi files)

Structural Animation



Multiplane Balancing

Multi plane balance for rotating shaft balancing.



Multiplane Balancing

Multi tachometer support Split weight calculation Specified or zero imbalance Bias factor selection Single Value Decomposition based primary

solution



Hammer Impact Analysis



Hammer Impact Analysis

Calculation of...– Coherence, Inertance, Mobility, Receptance, Apparent Mass,

Impedance, Obstructance

Automatic overload exclusion Exclude double hits Time histories (excitation & response) Transfer functions (H1 & H2)



Sound Quality Audio Replay




Play– Plays DATS signals or WAV files– Play sections (“one shot” or repeat)

Modify– Filter signals to identify problems or compare– Filter frequencies or orders (pass or reject)– Add speed profile to filter

Save– Save results as DATS signals, WAV or WMA



Source Contribution



Transfer Path Analysis

Known as ‘Source Path Analysis’



Human Response Biodynamics



Human Response Biodynamics

ISO8041 Weightings Building Vibration Assessment Weighting Max Transient Vibration Value (MTVV) Motion Sickness Dose Value (MSDV) Root Mean Quad (RMQ) Measure Vibration Dose Value (VDV & eVDV) Vibration Quality Measure Vibration (BS6841) Weighting Vibration (ISO2631) Weighting Generate EM spectrum Generate ISO time history from EM Spectrum EEC & ISO10326 standards Compute averaged and corrected SEAT factors



Time-Frequency Analysis



Time-Frequency Analysis

Wavelet Analysis Born-Jordan Wigner Ville Zhao Atlas Marks



Crash Biomechanics



Crash Biomechanics

Form Resultant (x, y,z) Digital Filtering Compliant with SAEJ211

– CFC60, CFC180, CFC600, CFC1000

FIR100 digital filtering Head Injury Criteria (HIC) Chest Severity Index (CSI) 3mm Exceedance Level (Thorax Data) Thoracic Trauma Index (TTI) Viscous Criterion (VC)



Modal Analysis



Modal Analysis

Parametric identification of – Modal Frequencies– Damping Factors – Modal Amplitudes

Frequency and Time Domain– Half-power estimates– SDOF, MSDOF, MDOF– ERADC

FRF synthesis from Parameters Mode Shape Animation

(using Structural Animation option)



Acoustics

Included features• Third Octave• Auto Spectral Density• Sound Pressure Level• Overall dB• Spectral Weighting - A,B,C,D

Optional features• Psychoacoustics• Nth Octave• Sound Level Meter• LEQ• Absorption, Reflection & Reverberation• Two Microphone Impedance Tube• 1/N Filters & Room Acoustics



Psychoacoustics

Loudness Sharpness Roughness Fluctuation Strength Specific Prominence



Sound Mapping



Sound Mapping

Sound Pressure Mapping Uses grid array of microphones Photographs of test piece can be used for graphical overlay later



Sound Mapping

Sound Intensity Mapping Uses sound intensity probe Photographs of test piece can be used for graphical overlay later



Sound Mapping

Sound Mapping Data Display Contor map Color map Image overlay Frequency selection from narrow band spectrum or third octave

spectrum View sound level values for each microphone at any frequency



Sound Mapping

MeasurementPointSelection

Color map & contorsoverlaid with imageof engine

Frequency selectionfrom 1/3 octavespectrum



Sound Mapping

:: working at the heart of test & measurement

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dats options - hoskin scientifique€¦ · nvh / refinement waterfalls – ... sharpness roughness...

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