Welcome to Vibrationdata
Update Page

Dear Guest, Writing tutorials and maintaining a website are expensive endeavors. I need your help to continue this effort. Your subscription will allow me to continue this site and to add new materials. The software and tutorials require a username and password which are given by subscription. The subscription instructions are given below. The subscription entitles the user to download all of the items on this page, as well as other Vibrationdata pages. Thank you for your support. Sincerely, Tom Irvine Email: tomirvine@aol.com

Tutorial Description	Files	Date Added or Updated
Minuteman II Stage 3, SR-19 & M57A1 Motor Resonances	M57.pdf	April 14, 2006
Synthesis of a time history to satisfy a shock response spectrum specification using wavelets.	jsynth_user_manual.pdf	April 13, 2006
The Acoustic Power Spectrum	aco_pow.pdf	April 10, 2006
Multi-Degree-of-Freedom Pyrotechnic Shock Simulation, Slide Presentation, by Smith and Hollowell	mdof_sim.pdf	April 1, 2006
Pyrotechnic Shock Structural Response, by R.G. Merritt	Merritt.pdf	April 1, 2006
Mechanical Shock from Frangible Joints, by V.R. Paul	frangible_joints.pdf	April 1, 2006
Time History Synthesis for Shock Testing on Shakers	th_syn.pdf	April 1, 2006
An Introduction to Random Vibration. A random vibration signal is analyzed in terms of its histogram, probability density function, and descriptive statistics.	random.pdf	March 30, 2006
U.S. Navy Technical Brief, Design Reference Mission Profile	drmpbookfin.pdf	March 22, 2006
NASA SP-8057 Structural Design Criteria Applicable to a Space Shuttle	sp8057.pdf	March 20, 2006
Added Mass for a Single-degree-of-freedom System Submerged in a Fluid	added_mass_fluid.pdf	March 20, 2006
Designing Electronics for Pyrotechnic Shock: By Henry Luhrs	Luhrs.pdf	February 28, 2006
Response of a Single-degree-of-freedom System Subjected to a Terminal Sawtooth Base Excitation:	terminal_sawtooth.pdf	February 24, 2006
Parameters for Liftoff Acoustics of a Rocket Vehicle	Rocket_Motor_Values.pdf	February 24, 2006
MIL-STD-810F, Method 513.5, Acceleration	MIL810F_acceleration.pdf	February 19, 2006
NAVSEA 09080-LP-000-3010, Shock Design Criteria for Surface Ships	NAVSEA_shock.pdf	February 19, 2006
The Pegasus Launch Vehicle: Shock and Vibration Environments	PegasusSV.pdf	February 15, 2006
NAVMAT P-9492, Navy Manufacturing Screening Program	navm.pdf	February 9, 2006
MIL-S-901D, Shock Tests, High Impact, Shipboard Machinery, Equipment, and Systems, Requirements for; Department of Defense, 1989.	MIL-S-901D.pdf	January 28, 2006
Bruel & Kjaer, Zoom FFT	zoom_fft.pdf	January 26, 2006
The Fundamental Bending Frequency of a Plate with Fixed-Free-Free-Free Boundary Conditions	cantilever_plate.pdf	January 17, 2006
Comparison of Response from Different Resonant Plate Simulation Techniques	Morse_test.pdf	January 16, 2006
Schiffer and Hyde, Mariner Mars 1964 Acoustically Induced Vibration Environment	Mariner_acoustics.pdf	January 13, 2006
Summary of Testing Techniques, by Dan Powers	Powers_test.pdf	January 12, 2006
Franken, Scharton, Mack, Comparison of Mariner Assembly-Level and Spacecraft-Level Vibration Tests	Mariner.pdf	January 11, 2006
Painter, Use of Force and Acceleration Measurements in Specifying and Monitoring Laboratory Vibration Tests	Painter_test.pdf	January 10, 2006
Heinrichs, Feasibility of Force-Controlled Spacecraft Vibration Testing using Notched Random Test Spectra	Heinrichs_force.pdf	January 9, 2006
Salter, Taming the General-Purpose Vibration Test	Salter_test.pdf	January 7, 2006
Scharton, Force Limited Vibration Testing Monograph	NASA_RP1403.pdf	January 5, 2006
Rice and Buehrle, Validation of Force Limited Vibration Testing at NASA Langley Research Center	NASA-2003-tm212404.pdf	January 5, 2006
Pulgrano, Impedance Concerns in Vibration Testing	Pulgrano_impedance.pdf	January 5, 2006
The Controlled Response of Resonating Fixtures Used to Simulate Pyroshock Enviroments, by Neil Davie	resonating_fixture.pdf	January 4, 2006
C130J Human Vibration	DSTO-TR-1756.pdf	January 2, 2006
D. Hessenaur, Propellar Drive Systems and Torsional Vibration	torsional_vibration.pdf	January 2, 2006
NASA CR-1596 Assessment of Space Vehicle Aeroacoustic-Vibration Prediction, Design, and Testing (Large File 57 Mb)	NASA_CR1596.pdf	December 29, 2005
Vibration of AC Induction Motors and Generators:	AC_motors.pdf	December 17, 2005
Response of a Single-degree-of-freedom System Subjected to a Terminal Sawtooth Base Excitation	terminal_sawtooth.pdf	November 16, 2005
Dynamic Analysis of a Mass-Damper System	mass_damper.pdf	November 11, 2005
The Fundamental Bending Frequency of a Square Plate with Fixed Corners and Otherwise Free Edges (Point-Supported at Each Corner)	square_plate_corners.pdf	October 16, 2005
Waveform Reconstruction using Wavelets	wavelet_reconstruction.pdf	October 15, 2005
Procedures for Testing Packaged Products	PKG_Testing_Procedures.pdf	September 27, 2005
An Improved Recursive Formula for Calculating Shock Response Spectra	DS_SRS1.pdf	September 26, 2005
Shock and Vibration Signal Analysis	Shock_and_Vibration_Signal_Analysis.pdf	September 14, 2005
PSD synthesis example using step-by-step software program instructions.	psd_synthesis_example.pdf	September 8, 2005
Notes on Shock Testing of Isolated Avionics Components	isolator_test_notes.pdf	September 1, 2005
U.S. Army TB 55-100, Transportability Criteria for Shock & Vibration	transpor.pdf	August 23, 2005
Free Vibration of a Two-Degree-of-Freedom System Subjected to Initial Velocity and Displacement	twodof_initial.pdf	August 16, 2005
Goddard General Environmental Verification Specification for STS & ELV Payloads, Subsystems, and Components	Goddard.zip	August 9, 2005
Notes on Finite Element Modeling of Isolated Components	FE_isolated.pdf	July 27, 2005
General Electric, Missile Vibration Control	ge_missile.pdf	July 27, 2005
Equivalent Bench Handling Shock Response Spectrum	bench_handling.pdf	July 25, 2005
T. Baca, Alternative Shock Characterization for Consistent Shock Test Specification:	alternative_shock.pdf	July 21, 2005
The Natural Frequency of a Rectangular Plate Point-Supported at Each Corner	plate_point_corner.pdf	July 8, 2005
Vibration in Rocket Vehicles due to Combustion Instability	pogo.pdf	July 2, 2005
Free Vibration with Coloumb Damping (Dry Friction Damping)	coloumb.pdf	June 25, 2005
Equivalent Bench Handling Shock Response Spectrum	bench_handling.pdf	June 25, 2005
The Fundamental Frequency of an Isolated Annular Plate	annular_elastic.pdf	June 21, 2005
An Assessment of the Common Carrier Shipping Environment, Forest Service, U.S. Dept. of Agriculture, 1979	ADA071303.pdf	June 20, 2005
The Cosine Integral	cosine_integral.pdf	June 18, 2005
The Fourier Series of a Rectangular Wave	fourier_series_rectangular.pdf	June 11, 2005
The Fundamental Frequency of an Isolated Circular Plate	circular_elastic.pdf	May 23, 2005
Shock Analysis of Avionics Mounting Bolts	shock_bolts.pdf	May 20, 2005
MIL-STD-167-1 Mechanical Vibration of Shipboard Equipment	MIL-STD-167-1.pdf	May 18, 2005

C/C++ Software Description	Files	Date Added or Updated
Synthesis of a time history to satisfy a sine-on-random specification	sine_on_random.exe sine_on_random.cpp	May 23, 2006
Shock response spectrum of an arbitrary acceleration time history. The user must supply the input time history file. The input file would typically be the user’s measured accelerometer data.	qsrs.exe  qsrs.cpp	May 18, 2006
Time history response of a single-degree-of-freedom system to an arbitrary applied force	arbit_f.exe arbit_f.cpp	May 17, 2006
Synthesize a time history using wavelets to represent a measured time history.	wavelet_reconstruct.exe wavelet_reconstruct.cpp	May 5, 2006
Maximum PSD from individual PSD records.	psd_max.exe   psd_max.cpp	April 24, 2006
This program converts a Fourier transform magnitude with constant bandwidth to an octave or one-third octave format.	FFToct.exe   FFToct.cpp	April 15, 2006
Synthesis of a time history to satisfy a shock response spectrum specification using wavelets.	jsynth.exe jsynth.cpp	April 13, 2006
This program accepts an acceleration, velocity, or displacement power spectral density function. Given one of these functions, the program then integrates or differentiates as appropriate to find the other two functions. The program also calculates the overall level of each of the three functions.	psdint.exe  psdint.cpp	April 8, 2006
Forces in a Beam, Modal Transient	ne_force_beam_transient.cpp ne_force_beam_transient.exe	March 31, 2006
Forces in a Beam, Static Analysis	ne_force_beam_static.cpp ne_force_beam_static.exe	March 31, 2006
Response of an individual single-degree-of-freedom system to base excitation.	sdof_ran.exe  sdof_ran.cpp	March 30, 2006
Splits multichannel file into single files.	columns.exe columns.cpp	March 27, 2006
Forces in a Beam, Modal Transient (old)	ne_force_beam_th.cpp  ne_force_beam_th.exe	March 23, 2006
IOtech data conversion. Generates a series of two-columns files (time & amplitude) from an IOtech input file, where the input file is in ASCII text format. The input file has amplitude columns but no time column.	io_conv_large.exe io_conv_large.cpp	March 16, 2006
Signal scaling and statistics with adjustment options.	signal.exe signal.cpp	March 14, 2006
Eigenvalues and eigenvectors of a two-degree-of-freedom system.	twodof.exe   twodof.cpp	March 10, 2006
Addition of shock pulses.	composite_shock.exe composite_shock.cpp	March 10, 2006
Convert MSC/Nastran time history punch files to useful format for acceleration output:	msc_punch_accel.cpp	March 3, 2006
UCI data conversion. Generates a series of two-columns files (time & amplitude) from a UCI input file. The first column is time(sec). The additional columns are amplitude.	uci_large.exe uci_large.cpp	February 28, 2006
Time history response of a two-degree-of-freedom system to an arbitrary acceleration base input.	two_dof_arbit.exe two_dof_arbit.cpp	February 26, 2006
Response of a single-degree-of-freedom system to a terminal sawtooth applied pulse.	terminal_sawtooth_force.exe terminal_sawtooth_force.cpp	February 25, 2006
Liftoff Acoustics of Rocket Vehicle.	liftoff.exe liftoff.cpp	February 24, 2006
Convert a PSD with constant bandwidth to octave, one-third octave, or one-sixth octave format.	PSDoct.exe   PSDoct.cpp	February 16, 2006
Sine function identification and removal.	sinefind.exe  sinefind.cpp	January 30, 2006
This program calculates the vibration test levels per MIL-STD-810F,Table 514.5C-IV, Helicopter Vibration Exposure.	hve.exe hve.cpp	January 28, 2006
Transfer function magnitude for analog Butterworth and Bessel lowpass filters.	Butterworth_transfer.exe Butterworth_transfer.cpp	January 3, 2006
This program performs a curve-fit on an acceleration spectral function resulting from an applied force. The main purpose is to determine the damping ratio. The spectral function may be: 1. acceleration PSD 2. acceleration Fourier magnitude 3. transfer function magnitude (accel/force)	bandwidth_damp.exe bandwidth_damp.cpp	December 22, 2005
Holzer method for torsional systems.	Holzer.exe   Holzer.cpp	December 21, 2005
Damped sine function identification.	sinefdam.exe sinefdam.cpp	December 20, 2005
Natural frequency of a rifle barrel with free-free boundary conditions.	rifle_frequency.exe rifle_frequency.cpp rifle.pdf	December 13, 2005
Sine and Random Vibration Equivalent Damage	damage.exe  damage.cpp	December 13, 2005
Pyrotechnic shock attenuation from joints, distance, and isolators.	pyro_atten.exe  pyro_atten.cpp	December 5, 2005
Optimum envelope of a power spectral density function using the vibration response spectrum method.	envelope.exe  envelope.cpp	December 2, 2005
NASA Pyrotechnic Shock Design Guidelines Manual, attenuation through a cylindrical shell.	cylindrical_atten.exe cylindrical_atten.cpp	November 17, 2005
Response of a single-degree-of-freedom system to a terminal sawtooth input acceleration pulse.	terminal_sawtooth.exe terminal_sawtooth.cpp	November 16, 2005
I-DEAS UC58 data conversion	uc58.exe uc58.cpp	November 1, 2005
Synthesis of a time history to satisfy a shock response spectrum specification using wavelets with reverse sweep.	jsynth_rev.exe jsynth_rev.cpp	September 20, 2005
Synthesis of a time history to satisfy a shock response spectrum specification using wavelets including a specified ZPA.	jsynth_ZPA.exe jsynth_ZPA.cpp	September 20, 2005
Calculate a PSD via successive bandpass filtering.	filter_psd.exe filter_psd.cpp	September 13, 2005
Time history response of a two-degree-of-freedom system to a half-sine acceleration base input.	twodof_halfsine.exe twodof_halfsine.cpp	August 19, 2005
Interpolate an SRS to octave format.	interp_SRS.exe interp_SRS.cpp	August 19, 2005
Scale a wavelet table to match an SRS specification.	wavelet_scale_SRS.exe wavelet_scale_SRS.cpp	August 11, 2005
Power spectral density of a time history signal. This program uses the FFT method. Single PSD file output.	poweri_lite.exe poweri_lite.cpp	July 26, 2005
Digital filtering using a Butterworth 6th order  filter. The user must supply an input time  history  file. Both lowpass and highpass  options are  available.	filter.exe  filter.cpp	July 26, 2005
UCI data conversion. Generates a series of two-columns files (time & amplitude) from a UCI input file. The first column is time(sec). The additional columns are amplitude.	uci.exe uci.cpp	July 23, 2005
Histogram, probability density function, and peak distribution of a time history.	histogram.exe histogram.cpp	July 21, 2005
Cumulative RMS of a time history. Used as an alternate tool for shock severity evaluation.	TRMS.exe TRMS.cpp	July 21, 2005
Interpolate an SRS to octave format.	interp_SRS.exe interp_SRS.cpp	July 18, 2005
Principal strains from dynamic strain data using Mohr's circle for a rosette.	mohr_rosette.exe mohr_rosette.cpp	July 9, 2005
Transmission loss via the mass law.	mass_law.exe mass_law.cpp	June 28, 2005
Evaluation of the Cosine Integral. S (1/x)cos(x)dx	cosine_integral.exe cosine_integral.cpp	June 15, 2005
Decimation with filtering.	decimate.exe decimate.cpp	June 9, 2005
Synthesis of a time history to satisfy a shock response spectrum specification using wavelets with reverse sweep.	jsynth_rev.exe jsynth_rev.cpp	May 13, 2005

Matlab Software Description	Files	Date Added or Updated
Waterfall FFT	waterfall_FFT.m	May 23, 2006
Convert Matlab data to ASCII text.	data_convert.m	April 14, 2006
SRS Matlab Script	srs.m	April 14, 2006
Time History Plotting and Descriptive Statistics	signal_stats.m	April 14, 2006
This progam sets up a coordinate table interactively for a PSD or SRS.	coordinates.m	April 14, 2006
Extract Time History Segment	extract.m	March 7, 2006
Inverse FFT	inverseFFT.m	November 10, 2005
The Natural Frequency of a Rectangular Plate Point-Supported at Each Corner	plate_corners.m pfunction.m	October 16, 2005
Generation of time history signals: 1. sine 2. damped sine 3. sine sweep 4. white noise	generate.m sweep.m white.m	September 13, 2005
One-sided, Full-amplitude FFT. Includes spectrogram.	full_FFT.m	August 30, 2005
The Fundamental Frequency of an Isolated Annular Plate	annular_elastic.m	June 21, 2005
The Fundamental Frequency of an Isolated Circular Plate	circular_elastic.m	May 23, 2005
PSD plotting function with full grid	PSD_plot.m calculate_PSD_slopes.m	May 18, 2005
Synthesis of a Time History to Satisfy a Power Spectral Density	psd_syn.m psd_syn_data_entry.m progressbar.m	May 10, 2005
Fourier transform	fourier.m progressbar.m	May 10, 2005
Vibration Analysis of an Isolated Mass with Six-degrees-of-freedom	six_dof_iso.m	May 7, 2005
Determine the response of a particular SDOF system to a power spectral density base input	sdof_ran.m sdof_ran_engine.m interpolate_PSD.m calculate_PSD_slopes.m	May 2, 2005

Newsletter Description	Files	Date Added or Updated
SOFAR Channel  Seismo-acoustic T-waves Ice Quakes	June 2006	June 3, 2006
Ku-Band Antenna Dither Vibration Transmission Line Vibration	May 2006	May 14, 2006
Booming Sand Dunes and Beaches   Vibration in Naval Aviation    Sputnik Beep Acoustic Analysis	March 2006 Gobi_sand.mp3 Sputnik1.wav Sputnik1b.wav	March 25, 2006
Stuka Dive Bomber Siren   Lockheed C130J Hercules Vibration   Model Rocket Liftoff Acoustics     IIT Tube	January 2006 Stuka.wav Silver_Comet.mp3	January 10, 2006
Long Range Acoustic Device  Football Player Head Acceleration  Simple Measurement of Room Reverberation Time  Taipei 101 Building Tuned Mass Damper	December 2005 LRAD.mp3 Balloon3.mp3	December 4, 2005
Tibetan Singing Bowls    Rogue Waves	September 2005 singing_bowl.mp3	September 6, 2005
Earth Sferics, Tweeks & Whistlers    Auroral Chorus    Schumann Resonance   (Death Valley whistler is courtesy of Steve McGreevy )	June_2005  Death_Valley_whistler.mp3 NASA_whistler.mp3 Auroral_chorus.mp3	June 3, 2005
The Liberty Bell The Centennial Bell Elevator Jerk	May_2005  Centennial_bell.mp3	May 13, 2005
Human Vibration on a Trampoline Light Fixture Ballast Hum Cornell's Tiny, Vibrating Paddle Oscillator Senses the Mass of a Virus Seismic Shaking Erased Small Impact Craters on Asteroid	April_2005 acceleration time history trampoline.txt	March 13, 2005
Transformer Hum Magnetostriction Experiments	March_2005  tuningfork440.mp3	February 20, 2005