MIL 810 Method 507 is used to evaluate the equipment's resistance and performance when exposed to high humidity environments and assess the equipment's ability to operate with high levels of humidity, including both constant and cyclic humidity conditions.
MIL-STD-810 specifies different humidity conditions based on the anticipated exposure scenarios including constant humidity levels or cyclic humidity variations including humidity levels, temperature, and duration. The test engineering team at Clark Testing conducts MIL-STD-810, Method 507 to evaluate equipment's ability to resist moisture ingress, corrosion, material degradation, electrical conductivity, and functional performance in high humidity environments.
The standard defines acceptance criteria for humidity testing. The criteria may include allowable moisture ingress, corrosion resistance, functionality during and after exposure to high humidity, and other performance parameters. The equipment is assessed based on its ability to withstand the specified humidity conditions without sustaining damage or exhibiting performance degradation beyond acceptable limits.
This method consists of two procedures:
- Procedure I Induced Storage & Transit
- Natural and Cycles
- Procedure II Aggravated
Procedure I – Induced Storage & Transit; Natural / Cycles: Once a cycle is selected, perform the storage & transit portion first, followed by the corresponding natural environment portion of the cycle. Procedure I includes three unique cycles that represent conditions that may occur during storage or transit, as well as three unique natural environment cycles that are performed on test items that are open to the environment.
Procedure II – Aggravated: Procedure II exposes the test item to more extreme temperature and humidity levels than those found in nature (without contributing degrading elements), but for shorter durations. Its advantage is that it produces results quickly, i.e., it may, generally, exhibit temperature-humidity effects sooner than in the natural or induced procedures. Its disadvantage is that the effects may not accurately represent those that will be encountered in actual service. Be careful when interpreting results. This procedure is used to identify potential problem areas, and the test levels are fixed.
The test engineering team at Clark Testing will help select the appropriate test conditions depending on the climate, duration, and test item configuration during shipping, storage, and deployment. The variables common to both procedures are the temperature-humidity cycles, duration, and configuration. Our team will assess the requirements documents to determine if they impose or imply additional test conditions. We will typically use the worst-case conditions to form the basis for selecting the test and test conditions to use. Once we determine the test conditions, we will include them in the test plan and commence with the process of the MIL 810 method 507 humidity validation test.
Test Set Up
In house custom design and fabrication capabilities (machining and welding) to ensure test fixtures accurately simulation environmental conditions. FEA capabilities to support fixture design along with welding, fabrication & machining services. Multiple vibration adapter plates and prefabricated test fixtures help to streamline the testing process.
Instrumentation capabilities including accelerometers and strain gages with multi-channel control and data acquisition equipment ensuring accurate test data is being recorded. All instrumentation and equipment is provided with measurement uncertainty and compliant with Clark’s ISO 17025-2017 Quality Program.
Lab technicians and engineers record daily test activities to register all activities, events, and responses during the test. The daily test logs along with test data, pictures and test procedures are included in comprehensive test report that is the industry standard.
We work closely with you to validate engineering, ensure quality, analyze test spectrums, and execute accurate testing programs for successful qualification and marketing of your product.