Another work-in-progress… Step 1: Download a video file. Step 2: Play using VLC media player. * * * * * Launch Vehicles Delta 4 Heavy Launch Vehicle Shock Events Pegasus Launch Vehicle Linear Shaped Charge Test * * * * * Helicopters Chinook Ground Resonance… Read more
I am trying to collect all my presentations. This is a work-in-progress… Thank you, Tom Irvine * * * * * * NAFEMS World Congress 2017 Introduction to Vibration Spectral Functions Random Vibration Vibration Fatigue Shock 1 & 2 Videos * * * * *… Read more
Certain equipment must be designed and tested to withstand vibration. This is common in the automotive, aerospace, military and other industries. The equipment is typically mounted to a shaker table and then subjected to a base input random or sine sweep vibration test. The random… Read more
LA Times Article, Supersonic passenger jets might make a comeback, more than a decade after the last Concorde flight link Boom Technology Inc. – Tom Irvine
Equipment must be designed and tested to withstand shock and vibration. Ideally, all equipment would be tested on a shaker table with six-degree-of-freedom control (three translations and three rotations). Such tables and control systems exist but are very expensive. Furthermore, any multi-axis testing requires careful… Read more
Hurt people, hurt people. That’s how pain patterns get passed on, generation after generation after generation. Break the chain today. Meet anger with sympathy, contempt with compassion and cruelty with kindness. Greet grimaces with smiles. Forgive and forget about finding fault. Love is the weapon… Read more
Here is a listing of the webinars and related materials. Matlab script: Vibrationdata Signal Analysis Package 1. Natural Frequencies 2. Sine Vibration 3. Sine Sweep Vibration 4. Random Vibration 5. Fourier transforms 6. Leakage Error, Hanning Window 7. FFTs 8. Waterfall FFT 9. White Noise… Read more
Mechanical joints may have nonlinear damping and stiffness, due to.frictional slipping between the connected members, etc. I am enclosing modeling advice from a colleague and related links. – Tom Irvine * * * If the nonlinearity stays fairly weak then there are a few options… Read more
This is a work-in-progress… I am creating a series of webinars with Matlab exercises for seismic testing. Here are the slides. Telcordia Technologies Generic Requirements GR-63-CORE: Bellcore_GR_63_Core.ppt This unit contains an alternative waveform for VERTEQII. CEI.IEC 980, Recommended practices for seismic qualification of electrical equipment… Read more
You are welcome to participate in any of the following courses. I will teach shock & vibration course in Trieste, Italy on January 25-27, 2017. Course Link * * * I will teach a shock & vibration finite element analysis course in Singapore, February 13-15,… Read more