I will present two tutorials sessions at the Shock & Vibration Symposium. Here are the slides: Shock Response Spectra & Time History Synthesis SAVE_conference_2014_Irvine_shock.pptx Rainflow Cycle Counting for Random Vibration Fatigue Analysis SAVE_conference_2014_Irvine_fatigue_revA.pptx * * * Here is the Matlab GUI multi-function signal analysis package:… Read more
I have added a function for generating random time histories with user-specified skewness & kurtosis to the Vibrationdata Matlab Signal Package posted at: Vibrationdata Matlab Signal Analysis Package The function includes an option for band-limiting the signal via lowpass filtering. Tom Irvine
Matthew 15 21 Then Jesus went thence, and departed into the coasts of Tyre and Sidon. 22 And, behold, a woman of Canaan came out of the same coasts, and cried unto him, saying, Have mercy on me, O Lord, thou son of David; my… Read more
PowerPoint Slides: webinar_34_rainflow_fatigue_beam.pptx Audio/Visual File: NESC Academy Rainflow Fatigue for Continuous Beams – Recommend viewing in Firefox with Sliverlight Plugin * * * References: Steinberg’s Vibration Analysis for Electronic Equipment Rainflow Fatigue Posts * * * Matlab script: Vibrationdata Signal Analysis Package * * * See also:… Read more
Here is a Matlab script for the ground PPV: blast_ground_velox.zip References: http://www.dot.ca.gov/newtech/researchreports/reports/2001/vibrations.pdf ftp://ftp.odot.state.or.us/techserv/geo-environmental/Material%20Sources/Resources/Blasting_and_Community.pdf – Tom Irvine
A function for calculating blast & burst overpressure is given in: Matlab script: Vibrationdata Signal Analysis Package The function can be accessed via: >> vibrationdata > Miscellaneous > Blast & Burst Overpressure * * * WHAT HAPPENS WHEN A TIRE EXPLODES? Air Safety Week had… Read more
PowerPoint Slides: Webinar_33_Rainflow_Fatigue.pptx Audio/Visual File: NESC Academy Rainflow Fatigue – Recommend viewing in Firefox with Sliverlight Plugin * * * References: Steinberg’s Vibration Analysis for Electronic Equipment Rainflow Fatigue Posts * * * Matlab script: Vibrationdata Signal Analysis Package * * * See also: Vibrationdata… Read more
The Rice characteristic frequency f of a time history is where y is the amplitude It is useful for estimating the dominant frequency for signal which is fairly sinusoidal. Here is a Matlab script: rice_frequency.m See also: Vibrationdata Signal Analysis Package – Tom Irvine
God speaks to us through the Holy Scriptures. 10 And the brethren immediately sent away Paul and Silas by night unto Berea: who coming thither went into the synagogue of the Jews. 11 These were more noble than those in Thessalonica, in that they received… Read more
17 And whatsoever ye do in word or deed, do all in the name of the Lord Jesus, giving thanks to God and the Father by him. 23 And whatsoever ye do, do it heartily, as to the Lord, and not unto men; 24 Knowing… Read more