Structural Dynamics


The Structural Dynamics Group at the Goddard Space Flight Center has the facilities and
technical expertise to conduct vibration tests, acoustic tests, acceleration tests, static loading
tests, and mass properties tests of spacecraft, scientific instruments, or their components.


Vibration Test Facility

The vibration test facility provides all necessary services and equipment to perform shock and vibration testing of spacecraft and subsystems.

Digital control systems provide sinusoidal, random, and transient waveform control to four separate electrodynamic exciters.

The control systems are capable of response limiting based on either acceleration or force signals.

Digital data acquisition systems condition, record, and analyze up to 500 channels of accelerometer, force, and strain gage signals.

Available Exciters

UD T4000 Shaker/2XSAI180 Amplifier

  • 40,000 lbs rms random force and 40,000 lb pk sine force

  • 1.7 inch displacement double amplitude

  • 50"x50" slip table

  • Serviced by 7.5 ton micro travel mode bridge crane

UD T4000 Shaker/2XSAI180 Amplifier

  • 40,000 lbs rms random force and 40,000 lb pk sine force

  • 2.7 inch displacement double amplitude

  • 74"x76" slip table

  • Serviced by 7.5 ton micro travel mode bridge crane

T2000.jpg

UD T2000 Shaker/SAI120 Amplifier

  • 18,000 lbs rms random force and 16,000 lb pk sine force

  • 2.7 inch displacement double amplitude

  • 24"x24" slip table

  • Serviced by 2 ton monorail crane

UD_T2000.jpg

UD T2000 Shaker/SAI120 Amplifier

  • 18,000 lbs rms random force and 16,000 lb pk sine force

  • 2.7 inch displacement double amplitude

  • Serviced by 2 ton monorail crane

Large_Vibration_Test_Facility.jpg

Data Physics (DP) LE 5022-3 Shaker/DSA10-360K Amplifier

  • 50,000 lbs peak sine force

  • 3-inch displacement double amplitude

  • 11’ x 11’ lateral slip table

  • 11’ x 11‘ vertical guided head expander

  • Serviced by 35 ton micro-control bridge crane



Please contact structural dynamics personnel for further
information to ensure all test and facility requirements are met.



Personnel

Chuck Skinner
Group Lead
(301) 286-9227
Charles.M.Skinner@nasa.gov


Tim Schwartz
Senior Expert Structural Dynamics Test Engineer
(301) 286-1029
Timothy.A.Schwartz@nasa.gov


Jason Parks
Structural Dynamics Test Engineer
(301) 286-3848
Jason.M.Parks@nasa.gov


John Nguyen
Structural Dynamics Test Engineer
(301) 286-6480
John.T.Nguyen@nasa.gov


Mark Ramsey
(301) 286-4637
Mark.J.Ramsey@nasa.gov
Rick Palmisano
Commercialization Test Coordinator
(301) 286-5754
rick.palmisano@nasa.gov


Related Links

Some helpful sites in the areas of structural dynamic testing and signal processing.


The Scientist and Engineer's Guide to Digital Signal Processing (DSP)
An online version of a handbook that covers many various topics in DSP. You can download the entire book, section by section, free of charge! Downloads in PDF format.

Shock and Vibration Tutorials Homepage
A great resource for short papers on the fundamentals of many subjects such as shock, random and sine vibration, signal processing, and acoustics. Downloads no longer free, requires yearly subscribtion to site (~$24year).

Peter Avitabile's Homepage - UMASS Lowell
A great place to get simple explanations to complex questions about modal analysis.

JHU Signal Systems Control - Demonstrations
Interactive Java applets that introduce subjects from convolution to sampling rates.


Shock and Vibration Information Analysis Center (SAVIAC)
This page is a good place to find short course, software, and experts in the field on the subjects of shock and vibration.

The Institute of Environmental Sciences and Technology
A good site for information on education, publications, and symposiums on the subjects of design, test, and evaluation; product reliability; and contamination control.

Amara's Wavelet Page
A great page on wavlets. Starts with an overview and continues on to more complex topics, and even has links to many other wavelet webpages.

The International Society for Optical Engineering
A good site for information on optical engineering including laser vibrometery.