Vibration Testing Lab & Laboratory Requests — Sine, Random & Fixtures
Vibration testing needs a defined input, mounting and functional objective. Sine, random and transport vibration address different conditions; a laboratory shaker programme is meaningful only when the fixture and specimen response represent the required use case.
Choose the excitation and boundary conditions
Provide the applicable specification, frequency range, amplitude or spectral profile, duration and axes. IEC 60068-2-6 describes sinusoidal vibration, while other methods address random and other exposures. State whether the specimen is a mounted component, operating assembly or packaged product; these configurations have different boundaries. Agree any resonance search and dwell logic before qualification rather than adding it after a failure.
Treat the fixture as part of the test
The fixture can amplify, attenuate or redistribute input. Ask about mounting stiffness, fastener torque, control locations, response monitoring and limits needed to protect the specimen or shaker. Realistic cable routing, attached mass and operating loads matter. Large or flexible products may need a suitability review before the provider can confirm its capacity; do not infer this from a broad vibration capability label.
Define performance and post-test investigation
Agree functional monitoring, permitted interruptions, inspection and pre/post checks. Request input and response records, setup photographs, notching or other deviations, and failure timing. A visibly intact unit may still have connector intermittency, fatigue damage or calibration change. If a failure needs root-cause investigation, retain the assembly and logs before disassembly. Passing a defined profile is not an unrestricted durability guarantee.
Prepare a comparable vibration laboratory brief
State specimen count, dimensions and mass, frequency range, sine amplitude or random PSD and overall level, axes, duration, fixture responsibility, functional criteria and operating modes. Supply the customer profile and revision rather than asking for a generic standard pass. Include combined temperature/humidity conditions if needed, site or shipping location, budget and decision deadline. Confirm method-specific accreditation when required; neither a laboratory listing nor Laboratory Vortex coordination establishes it.
Sample considerations
- Provide dimensions, mass, centre of gravity, mounting drawings, torque and attached loads.
- Specify sine/random/transport profile, axes, duration, operating modes and functional limits.
- Agree fixture responsibility, control/response channels, protective limits and failure investigation handling.
Questions to ask a laboratory
- How is fixture suitability and delivered specimen input demonstrated?
- Which channels monitor critical function and structural response?
- What notching, interruptions or configuration changes will be reported as deviations?
Laboratories with relevant capabilities
- Element Denver-Longmont (Longmont, CO) — Vibration and dynamics
- Tri-Wall UK (Monmouth, Wales) — Drop and vibration testing
Frequently asked questions
- Sine or random vibration?
- Sine testing suits resonance searches and rotating-machinery environments; random testing better represents transport and broadband service environments.
Sources and scope references
IEC 60068-2-6 — sinusoidal vibration
Related testing briefs
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Confirm standard edition, jurisdiction and actual laboratory scope. Service references are not partnerships or endorsements.