Part number 9302

VR9302

SRS Test Development & Control

Define the SRS test settings and synthesize a pulse to meet a specified curve. VibrationVIEW supports over 200 individual breakpoints, suitable for virtually any test specification.

Test generation techniques include:

• Linear and exponential chirp
• WavSyn
• Burst random
• Linear and exponential chirp on burst random
• Enveloped random
• Burst sine

Alternatively, iterate an SRS curve from a field-recorded time waveform.

Waveform Synthesis

Manually adjust the parameters of the underlying wavelets or allow VibrationVIEW to automatically create and run a test without intervention.

Additional Software Features

• Enter individual tolerance bands for each frequency
• Import frequency and amplitude breakpoints from a text file
• Define parameters Te and TE for MIL-STD-810
• Exceed SRS demand to meet or exceed specifications with a minus tolerance of 0%

Graphing Capabilities

• SRS pseudo velocity and SRS acceleration plots
• Acceleration for primary (+), primary (-), or maxi-maxi
• IEEE-344 graphs
• and more

Generate Professional Test Reports with Ease

Fulfill all your test reporting needs with user-friendly options for customization. VibrationVIEW can generate vibration test reports as a docx, PDF, HTML, or Excel file and includes a built-in Report Builder.

Common SRS Test Specifications

• IEEE-344: procedure for seismic qualification of electrical equipment in nuclear power plants
• AASME NQA-1: nuclear quality assurance requirements
• Bellcore (Telcordia) GR-63: procedure and test level for seismic qualification of telecommunications equipment
• QME-100: ASME standard; procedure for seismic qualification of mechanical equipment
• AC-156: requires structures and equipment to maintain integrity despite earthquakes
• ISO 4866.2010: measurement of vibration and evaluation of the effect on structures
• ISO/TS 10811-1:2000: vibration and shock in buildings with sensitive equipment

What is the SRS?

The SRS is a model of a test article’s maximum response to a transient event. Engineers use a synthesized SRS pulse to evaluate the test article’s behavior during and after a complex shock event, such as earthquakes, rocket separation, and shipboard shock.

Unlike classical shock tests that use predefined pulse shapes, SRS testing defines a target response. Engineers synthesize a time-domain waveform that produces the required response spectra.

Applications

• Describe a transient event in general terms
• Estimate the damage potential of a shock event
• Design structure resonances
• Define test specifications (particularly for seismic tests)
• Replicate failure modes

Fundamentals of VibrationVIEW - Shock Response Spectra (SRS)

Tech Talk

Common Issues in SRS Testing

Common Issues in SRS Testing

Develop an SRS with Field-recorded Data

In VibrationVIEW, you can modify a field-recorded time waveform to meet or exceed a specified SRS curve. The resulting time waveform reflects the end-use environment and has the same frequency response function.

A waveform based on an enveloped set of field recordings maintains real-world characteristics and creates an SRS waveform that accurately reflects the real-world application. Learn more: Using Recorded Data to Improve SRS Test Development.

SRS Analysis

Analyze field data, develop spectra from recorded data, and compare the potential damage of test profiles in VR’s ObserVIEW analysis software.