Lord, I Would Follow Thee 1. Savior, may I learn to love thee, Walk the path that thou hast shown, Pause to help and lift another, Finding strength beyond my own. Savior, may I learn to love thee– (Chorus) Lord, I would follow thee. 2.… Read more
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
PowerPoint Slides: webinar_36_fatigue_nonGaussian_random.pptx Audio/Visual File NESC Academy Non-Gaussian Random Fatigue and Peak Response – Recommend viewing in Firefox with Sliverlight Plugin * * * References: Rainflow Fatigue Posts Generating Random Time Histories with User-specified Skewness & Kurtosis * * * Matlab script: Vibrationdata 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
PowerPoint Slides: webinar_35_fatigue_sine_random.pptx Audio/Visual File: NESC Academy Using Fatigue to Compare Sine and Random Environments – Recommend viewing in Firefox with Sliverlight Plugin * * * References: Steinberg’s Vibration Analysis for Electronic Equipment Sine and Random Vibration Equivalent Damage Rainflow Fatigue Posts * * * Matlab… Read more
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
NASA-STD-5019, Fracture Control Requirement for Spaceflight Hardware (excerpt) 4.1.1.12 Low-Risk Part This section addresses parts that can be classified non-fracture critical because of large structural margins and other considerations that make failure from a pre-existing flaw extremely unlikely. a. For a part to be classified… 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