Overview of the Space Vacuum Thermal Cycling Test Chamber

Space Vacuum Thermal cycling test chambers are used for components and entire satellites in the aerospace field, such as artificial satellites and space probes. To ensure high reliability and long service life, it is necessary to conduct reliability tests simulating a vacuum thermal environment on the products before they are put into use. The testing equipment is a space vacuum thermal cycling test chamber.

Below, we will explain the testing process of the space vacuum thermal cycling test chamber in detail.

Test Equipment: Huanyi Instruments Space Vacuum Thermal Cycling Test Chamber

Test Principle:

By simulating the space environment, the product is subjected to the same or similar environmental and load conditions as its actual working conditions during the test, thereby revealing its working characteristics and performance limitations under these conditions, and discovering the weaknesses and failure mechanisms of the product in space conditions.

Key test elements:

① Test vacuum degree;

② Limiting temperature;

③ Holding time at the limiting temperature;

④ Temperature change rate;

⑤ Electrical stress and operating time;

⑥ Number of test cycles.

a. In Thermal Vacuum testing, the vacuum level is typically less than 1.3 × 10⁻³ Pa. Different vacuum levels result in different physical effects on the device, such as pressure difference effects, thermal radiation effects, material evaporation, sublimation and decomposition effects, micro-discharge and breakdown phenomena, etc.

b. The limiting temperature is related to the device's operating temperature and needs to be determined based on the device's specific characteristics.

c. The dwell time at the high and low temperature limits is typically (8~12) h.

d. The temperature change rate should not be less than 1 ℃ /min.

e. The number of cycles is related to the test type, but should be at least 3.5 cycles.

Test Environment Control Technology:

Test environment control technology is one of the core technologies of thermal vacuum testing, mainly including vacuum technology and temperature control technology.

1. Vacuum technology mainly involves the selection and use of vacuum pumps, the measurement and control of vacuum levels, and the design and maintenance of vacuum systems.

2. Temperature control technology mainly involves the selection and use of heating and cooling equipment, the measurement and control of temperature, and the design and maintenance of thermal management systems.

Data Collection and Processing Techniques:

Data collection and processing techniques are another core technology in thermal vacuum testing, mainly including data acquisition and data processing techniques.

1. Data acquisition techniques primarily involve the selection and use of sensors, the design and maintenance of the data acquisition system, and data transmission and storage.

2. Data processing techniques mainly involve methods such as data cleaning, data conversion, and data analysis, as well as related software tools.

Techniques for analyzing and interpreting experimental results:

Techniques for analyzing and interpreting experimental results are crucial for thermal vacuum testing, primarily including statistical analysis, machine learning, and visualization techniques.

1. Statistical analysis techniques are mainly used to describe and infer the statistical characteristics of data, such as mean, standard deviation, and correlation.

2. Machine learning techniques are mainly used to learn and predict patterns and trends from data.

3. Visualization techniques are mainly used to present data and analysis results in graphical form for easier understanding and interpretation.