Radiator Vibration Durability: The Test Spectrum Must Come from Actual Loads

Vibration verification should replicate the installation boundaries, mass distribution, and road or equipment load characteristics.

Jinglian Zhongrui Technology Team

Key Points Simply increasing acceleration cannot proportionally represent lifespan. The failure mode is jointly determined by frequency distribution, resonance, fixture stiffness, piping constraints, and internal pressure. Implementation Focus 1. Collect or confirm the actual load spectrum and installation orientation. 2. Perform modal or sweep frequency tests to identify resonance regions, and check whether fixtures introduce false modes. 3. Apply reasonable pressure, temperature, or fluid mass conditions synchronously during testing. 4. Periodically inspect welds, brackets, pipe openings, and cores, and record crack initiation points. Verification and Closed Loop Before and after testing, compare airtightness, dimensions, and performance, and conduct root cause analysis on failed samples. Project Recommendations During plan review, input conditions, target values, validation methods, and responsible personnel should be recorded in a single traceable document; when changes occur, simultaneously assess the impact on design, manufacturing, and delivery.This approach can transform experience into stable, replicable engineering capabilities. Further reading: ISO 9001 Auditing Practices Group — Measurement Traceability: https://committee.iso.org/files/live/sites/tc176/files/documents/ISO%209001%20Auditing%20Practices%20Group%20docs/Auditing%20to%20ISO%209001%202015/APG-MeasurementTraceability2015.pdf ISO — The Process Approach: https://www.iso.org/iso/iso9001_2015_process_approach.pdf