PowerPoint File: Webinar_16_VRS.pptx Audio/Visual File: NESC Academy VRS – Recommend viewing in Firefox with Sliverlight plugin * * * Python Version Webinar_16_VRS_python.pptx Python script: Python Signal Analysis Package GUI * * * PSD Data Files: webinar_16_data_files.mat webinar_16_data_files.zip * * * Reference Paper: An Introduction to the… Read more
Here is a paper which gives a derivation of the equations of motion: semidefinite_force.pdf It also covers the transfer functions which can be calculated if the rigid-body mode is omitted. Here is a Matlab script: semidefinite_force.zip The main script is: semidefinite_force.m The remaining scripts are… Read more
TTL = Transistor–transistor logic Here is a Matlab script to convert a TTL tachometer signal from a motor shaft encoder into a cycles per second (CPS) vs. time plot. ttl_cps.m The script’s cycle detection criterion might need adjustment for a given encoder system. Please send… Read more
PowerPoint File: webinar_15_SDOF_frequency_domain.ppt Audio/Visual File: NESC Academy SDOF_response_base_input_frequency_domain – Recommend viewing in Firefox with Sliverlight plugin * * * PSD Data File: navmat_spec.psd * * * Python webinar_15_SDOF_frequency_domain_python.pptx Python script: Python Signal Analysis Package GUI * * * Reference Papers: Equivalent Static Loads for Random Vibration link… Read more
The static deflection method can be used for estimating the fundamental frequency of a grounded dynamic system. A 1 G body load is applied to the system for this analysis. The method can be used as a “ballpark” check for finite element models in conjunction… Read more
PowerPoint File: Webinar_14_PSD_synthesis.pptx Audio/Visual File: NESC Academy PSD_synthesis – Recommend viewing in Firefox with Sliverlight plugin * * * PSD Data File: navmat_spec.psd * * * Matlab script: Vibrationdata Signal Analysis Package * * * Python Version Webinar_14_PSD_synthesis_python.pptx Python script: Python Signal Analysis Package GUI * *… Read more
Testing to Shock Response Spectrum (SRS) specifications is usually performed using complex oscillating waveforms. This is also true for analytical simulation in the time domain. There are several reasons for this. Complex oscillating pulses can typically meet both the positive and negative SRS for a… Read more
PowerPoint File: Webinar_13_PSD_sdof_response.pptx Audio/Visual File: NESC Academy SDOF_Response_to_PSD_Input – Recommend viewing in Firefox with Sliverlight plugin * * * Reference Paper: Derivation of Miles Equation * * * Matlab script: Vibrationdata Signal Analysis Package * * * Python Version: Webinar_13_PSD_sdof_response_python.ppt Python script: Python Signal Analysis… Read more
PowerPoint File: Webinar_11_PSD.ppt The sample PSD specification is taken from: NAVMAT-P9492 Audio/Visual File: NESC Academy PSD – Recommend viewing in Firefox with Sliverlight plugin * * * Python Version: Webinar_11_PSD_python.ppt * * * Reference Papers: Integration of the Power Spectral Density Function Statistical Degrees-of-Freedom Power Spectral Density… Read more
PowerPoint Files: Webinar_9_white_noise_FFT.pptx Webinar_10_Sample_Rate.pptx Audio/Visual Files – Recommend viewing in Firefox with Sliverlight plugin NESC Academy Sample Rate, Nyquist Frequency & Aliasing NESC Academy White Noise FFT YouTube Videos: Sample Rate, Nyquist * * * Matlab script: Vibrationdata Signal Analysis Package * * * Python version: Webinar_9_white_noise_FFT_python.pptx Python… Read more