Overview
ISO 10813-4:2022 - "Vibration generating machines - Guidance for selection - Part 4: Equipment for multi-axial environmental testing" provides practical guidance for selecting vibration test equipment for multi-axial environmental testing. The standard covers systems that produce controlled vibration in more than one degree of freedom (linear and angular), assuming one or more exciters per required degree of freedom. It helps purchasers, test laboratories, designers and manufacturers match equipment capability to test requirements.
Key topics and requirements
- Scope and purpose
- Guidance specifically targeted at multi-degree-of-freedom vibration test systems used for environmental testing (normal or accelerated).
- Selection focused on the mechanical equipment; control-system selection is explicitly out of scope.
- Types of multi-axial testing
- Parallel thrust, bi-axial, tri-axial, six-degrees-of-freedom and other multi-degree configurations.
- Main components covered
- Exciters, test table, connectors (spherical, planar, orthogonal bearings, drive rods), and other components.
- System parameters and performance factors
- Degrees of freedom, number of exciters, maximum displacement/velocity/acceleration, angular displacement/velocity/acceleration, frequency range, maximum payload and torque, table suspension stiffness.
- Parasitic motions (harmonic distortion, non-uniformity ratio, transverse motion) and their impact on test fidelity.
- Selection procedures
- Determination of exciter and connector counts, exciter types (based on waveform, frequency range, displacement/force requirements), validation of proposed selections.
- Supporting material
Applications and users
- Practical for anyone specifying or buying vibration test systems for:
- Environmental and accelerated life testing
- Automotive, aerospace, electronics and components qualification
- Dynamic structural testing, diagnosis and calibration
- Useful to:
- Test laboratories evaluating equipment proposals
- Purchasers comparing vendor systems
- Designers and manufacturers assessing market requirements
- Third‑party consultants validating selection choices
Related standards and integration
- ISO 10813-1 (selection guidance for single-axis/environmental testing) - use in conjunction with Part 4 when selecting individual exciters.
- ISO 2041 and ISO 15261 - vocabulary and terminology referenced for consistent definitions.
ISO 10813-4:2022 is a practical selection resource that emphasizes matching test requirements (waveform, frequency, payload, DOF) to system configuration, exciters and connectors to achieve reliable multi-axial environmental testing. Keywords: ISO 10813-4:2022, multi-axial environmental testing, vibration test equipment, exciters, six-degrees-of-freedom, bi-axial, tri-axial, connectors, selection guidance.