admin 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
PowerPoint Slides: Webinar_32_circuit_board_fatigue.ppt Audio/Visual File: NESC Academy Electronic Circuit Board Fatigue Part I – Recommend viewing in Firefox with Sliverlight Plugin * * * References: Steinberg’s Vibration Analysis for Electronic Equipment Extending Steinberg’s Fatigue Method Design and Process Guidelines for Use of Ceramic Chip Capacitors… Read more
PowerPoint Slides: Webinar_31_rectangular_circular_plates.pptx Audio/Visual File: NESC Academy Rectangular & Circular Plate Shock & Vibration – Recommend viewing in Firefox with Sliverlight Plugin * * * References: Leissa, Vibration of Plates Rayleigh Method circular.pdf fixed_free_fixed_free_plate.pdf * * * Matlab script: Vibrationdata Signal Analysis Package Data files included in… Read more
PowerPoint Slides: Webinar_30_rectangular_plates.pptx Audio Visual File: NESC Academy Rectangular Plate Shock & Vibration – Recommend viewing in Firefox with Sliverlight Plugin * * * References: Leissa, Vibration of Plates Plate Base Excitation: plate_base_excitation.pdf The Natural Frequency of a Rectangular Plate Point-Supported at Each Corner: plate_point_corner.pdf * *… Read more
PowerPoint Slides: Webinar_29_stress_velocity.pptx Audio Visual Files: Recommend viewing in Firefox with Sliverlight Plugin NESC Academy Stress-Velocity Relationship Part I NESC Academy Stress-Velocity Relationship Part II * * * Acceleration Time History: Time (sec) & Accel (G) srs1000G_accel.txt * * * References: Stress-Velocity Relationship: sv_velocity.pdf Bending Frequencies of… Read more
PowerPoint Slides: Webinar_28_mdof_SRS.pptx Audio/Visual Files: Recommend viewing in Firefox with Sliverlight Plugin NESC Academy Multi-degree-of-freedom SRS Part I NESC Academy Multi-degree-of-freedom SRS Part II Three-dof System Example: three_dof_srs_revC.pptx * * * Acceleration Time History: Time (sec) & Accel (G) srs2000G_accel.txt * * * References:… Read more
Wire rope damping depends on: 1. Material 2. Diameter 3. Length 4. Number of strands 5. Number of turns per length 6. Initial tension or preload 7. Displacement amplitude The damping can be very nonlinear, particularly depending on displacement amplitude. The flexing of wire rope… Read more
This Webinar covers two synthesis techniques 1. Wavelets 2. Damped Sinusoids PowerPoint File: webinar_27_SRS_synthesis.pptx Audio/Visual Files: Recommend viewing in Firefox with Sliverlight Plugin NESC Academy Wavelet Synthesis NESC Academy Damped Sine Synthesis * * * Matlab script: Vibrationdata Signal Analysis Package * * * See… Read more