IEC 60068-2-27 is an international standard that defines the procedure for testing the ability of electronic equipment to withstand shock. It is part of the IEC 60068 series of environmental testing standards, which cover a wide range of conditions and stresses that electronic devices may encounter during their lifetime.
Shock Testing Methodology
The shock testing methodology outlined in IEC 60068-2-27 involves subjecting the equipment under test (EUT) to a half-sine shock pulse. This shock pulse has a specific duration and amplitude that varies depending on the severity level being tested. The shock pulses applied are designed to simulate the mechanical shocks that can occur during transportation, installation, or operation of the equipment.
The standard specifies different severity levels for shock tests, ranging from mild to severe. The severity level is determined by factors such as the type of equipment, its fragility, and the environment it will be exposed to. Test parameters, such as the peak acceleration and number of shocks, are defined for each severity level. The EUT is mounted on a rigid platform or fixture during testing to ensure proper measurement and repeatability.
Evaluation of Results
After the shock test is conducted, the performance of the EUT is evaluated based on various criteria defined in the standard. Some commonly analyzed parameters include functional adequacy, electrical continuity, integrity of solder connections, structural damage, and overall performance degradation.
The evaluation of results also involves comparing the performance of the EUT before and after the shock test, considering any deviations or failures observed. This comparison helps assess the equipment's ability to withstand the shocks encountered during its intended use and identify potential design or manufacturing flaws that need to be addressed. The test results can be used to make design improvements, select appropriate packaging and cushioning materials, or ensure compliance with industry standards and regulations.
Conclusion
IEC 60068-2-27 provides a standardized testing methodology for evaluating the shock resistance of electronic equipment. By subjecting the equipment to controlled shock pulses, manufacturers can identify vulnerabilities and improve product reliability. Compliance with this standard ensures that electronic devices can withstand mechanical shocks during transportation, installation, or operation, thereby reducing the risk of damage or malfunction. Adhering to IEC 60068-2-27 helps manufacturers deliver robust and reliable products to their customers.
Nina She