UNDERSTANDING SHOCK AND VIBRATION

by Dr. Alec Feinberg

This course provides excel based software to aid the student in quickly learning shock and vibration fundamentals. With the DfRSoft Shock and Vibration Software, the student will be able to specify shock tests and perform a number of analyses. The course will start with the basics, defining such terms as “G”, “g”, “Grms”, and “G-Force”. We will explain the physics of shock and vibration in understandable terms. At the end of this course the student will be able to clearly understand shock and vibration, its terms, how tests are specified, and have the capability to apply software as a test aid.

Shock Test and Analysis
The course will overview the different types of mechanical shock and test methods, including drop shock and electrodynamic shock pulse testing (and how these tests are specified). The software will help the user specify drop height, Gs, pulse durations and the need to calibrate the equipment.

Constant Acceleration
We will overview constant acceleration physics and testing. The student will understand the basics terms (RPN, Gs, and equipment radius) and how to specify this test and what key elements are needed to perform a successful constant acceleration test.

Target Audience
Supervisors, test engineers and technicians.

Required Tool from DfRSoft.com
DfRSoft.com software module requires Excel 2003 or higher.

Click here for a complete, printable, class description.
NEW SEMINARS AND WEBINARS
Length Course Title Instructor
1 day 17. Ensuring Reliability in Lean Product Development John Paschkewitz
1 day 18. Advancing HALT & HASS:
Moving to Comparative Limit Anaylsis		 Kirk Gray
3 hours 19. How to Effectively Implement DFR & DFSS
in a Systems Engineering Environment		 Thimmiah Gurunatha, Peng.
3 hours 20. Thunder & Lightning Accelerated Testing
in a Systems Engineering Environment		 Thimmiah Gurunatha, Peng.
3 hours Gage R & R or Measuring Systems Analysis Thimmiah Gurunatha, Peng.
3 hours Rainbow SPC Thimmiah Gurunatha, Peng.
3 hours Improving Test Effect. and Effic. using Orthogonal Arrays Thimmiah Gurunatha, Peng.
3 hours Design for Six Sigma Tools to Promote the Development of World Class Product Requirements Sam Keene
3 hours 21. Quickest Way to Reliability is to
HALT and go FISHing		 Howard Cooper, DFSS BB, DFR
2 hours 22. Understanding Shock and Vibration Alec Feinberg, Ph.D.
3 hours Physics of Failure Methods for Building-in Reliability into Products Abhijit Dasgupta, Ph.D.
3 hours 24. Intro to Design for Manufacturability Aldo Fucinari
3 hours 25. Microelectronic Pkg Issues and Failure Analysis Tom Green
CLASSES ON RELIABILITY
Length Course Title Instructor
2 days 1. Introduction to Reliability & Weibull Analysis Chet Haibel, M.S.E.E.
2 days 2. HALT & HASS + Workshop Kirk Gray
2 days 2. HALT & HASS + Workshop Chet Haibel
2 days 2a. Mastering HALT & HASS Kirk Gray
2 days 2a. Mastering HALT & HASS Chet Haibel
2 days 4. Demonstrating Reliability Chet Haibel
4 days 6. Accelerated Test Data Analysis Wayne Nelson, Ph.D.
SPECIFIC TECHNICAL CLASSES
Length Course Title Instructor
2 days 7. Physics of Failure Abhijit Dasgupta, Ph.D.
2 days 8. Lead-Free Solder Joint Reliability Jean-Paul Clech, Ph.D.
1 day 9. Medical Device Risk Management Chet Haibel, M.S.E.E.
2 days 14. Cooling Techniques for Electronic Equipment Steve Carlson
2 days 15. Preventing Shock and Vibration Failures Steve Carlson
2 days 16. Preventing Thermal & Vibration Failures Steve Carlson
CUSTOM SEMINARS OFFERED
Length Course Title Instructor
1 day 12. Integrating Adv. Quality, Reliability, Durability
(QRD) Tactics with Accelerated Product Dev.		 James G. McLeish, M.S.
3 days 13. HALT & HASS and Classical Rel. Methods Integrated Chet Haibel, M.S.E.E.


Sine Vibration
Sine vibration fundamental and physics will be explained in understandable terms, including natural and forcing frequency, damping, Q, and resonances. The student will be able to use the software to understand vibration testing and the interrelationships between sine amplitude, frequency, velocity and acceleration. We will discuss circuit board and equipment sine search resonance testing, definition of an octave, sweep rate, graphical sine estimation of Q from the data and how to estimate if the resonance is too large and requires damping. The software will help the student understand the proper octave sweep rate for resonance searching and key locations to place an accelerometer.

Random Vibration
Here we will introduce why we do random vibration, how to understand the frequency domain and the test specification, including common tests that are specified. The student will be able to estimate from the G2/Hz Power Spectral Density (PSD), the G-level content for both simple and complex spectra. We will explain how to use random vibration to estimate Qs observed in the PSD spectra. Repetitive shock will be overviewed which is used in HALT testing and how this spectrum differs from random vibration. What are the strengths and weakness of repetitive shock? When to use HALT versus electrodynamic (ED) random vibration testing? Finally we will discuss how it is possible to do a HALT like test on an ED shaker. This will help the student understand some of the differences between HALT and ED test capability.
CLASS REGISTRATION
Check Mailed
Payment at Seminar
Visa or Mastercard
(for your security, please fax or phone your credit card information after registering)

Seminars fees for North America:
1 day - $695;
2 days - $1195; 3 days - $1595.
Please contact Hobbs Engineering for Webinar pricing.
Click here for the long Registration Form
Contacts:
Hobbs Engineering Corp.
4300 West 100th Ave,
Westminster, CO 80031
Tel: 303-465-5988
Fax: 303-469-4353
learn@hobbsengr.com

©2011 Hobbs Engineering Corp.