Environmental testing involves exposing materials or products to artificial or natural environments and evaluating their performance under various storage, transportation and environmental conditions. From these aspects, we can see the connection between environmental research and trust. Environmental testing equipment is used to test and evaluate the reliability of any product in terms of environmental issues, such as using a ruler to measure the length of other materials. If the number is incorrect, the length measured will not be correct. Therefore, the reliability of environmental test equipment is particularly important.
1. Evaluation of environmental test equipment reliability:
Reliability of environmental test equipment refers to the ability of environmental test equipment to perform a specified function under specified conditions and within a specified period of time. Environmental testing equipment includes electrical equipment and mechanical equipment. The principles of reliability engineering are the same for electrical equipment and utility equipment, but they have their own characteristics.
In environmental test equipment, the performance of electrical equipment parts and equipment components have different effects on reliability. Regarding the configuration of electrical equipment and mechanical equipment, there are different strengths and reliability of environmental testing equipment. For example, the control part of the vibration test equipment belongs to the electrical equipment, and the reliability characteristics of the electrical equipment should be considered; when the vibrating table part is mainly a mechanical structure, a reliable and characteristic mechanical equipment should be considered.
Therefore, for the entire vibration test, the electrical equipment and equipment should be carefully considered when considering the reliability, that is, the reliability method of the whole system must be accepted. The key to improving the reliability of environmental inspection equipment in China is to improve the reliability of electrical equipment. To improve the reliability of electrical equipment, the reliability of the original components must be improved.
2. Environmental test equipment reliability index:
There are many indicators to check product quality. For example, a temperature and humidity laboratory has temperature and humidity limits, as well as heating and cooling rates. These quality indicators are often called performance indicators, which are important for the product to perform the tasks assigned to it. There is also a good indicator called the reliability index, which shows the ability of the product to maintain the performance index, as well as the working time of the temperature and humidity laboratory when there is no failure. Performance indicators do not involve time, while reliability indicators are closely related to time
Common indicators of reliability include:
Reliability: refers to the likelihood that the product will perform a specified function within a specified period of time and under specified conditions.
Calculation of probability of failure: It refers to the probability of failure of a product within a specified time and condition.
Failure performance: refers to the probability of failure per minute after a certain period of time when the product fails.
Shelf life: This product is referred to as a shelf life, which reflects the seasonal characteristics of the product and shows the ability of the product to maintain its performance over time specified. Specifically, it refers to the average operating time between two adjacent failures, also known as failure time units. For products that do not work, it is called the average service time before failure, that is, the average service time from the beginning of using the product until the failure.
Average maintenance time: average value of maintenance time.
Functionality: It is likely that the product being stored can maintain a specified function over a period of time.
3. Environmental test equipment reliability design:
The reliability of environmental test equipment is mainly for design technology and design cost. The goal of engineering design is to improve reliability lists, while the goal of cost-effective design is to make reliability lists the most useful and reasonable. The design of the exhibition for the reliability of environmental test equipment includes circuit design and environmental resistance. Circuit design should try to use ICs and components with high reliability, and important components should use redundancy technology.
Reliability assessment of environmental test equipment requires not only knowledge of engineering technology, but also theoretical methods of reliability, such as reliability characteristics and reliability prediction before design. Stress and other technologies must be accepted in the organization. Trust services require a certain amount of money. When creating the price of reliability, we need to consider the loss and cost of the product caused by unreliable products. To find the best trust, one can rely on trust price structure.
4. Reliability testing of environmental test equipment:
Content of reliability tests:
The reliable testing of environmental equipment is to simulate low temperature, high temperature, sudden changes in humidity and other conditions in the environment, so that the conditions that may occur during the use of the product can cause reaction more quickly, to check if there is. meets the expected quality objectives, to determine the performance of the product under different environmental conditions of actual use, transportation and safety, and then evaluate and improve the product to determine the life of the product.
Reliability Testing Procedures:
There are two ways to test the reliability of environmental testing equipment, including laboratory experience and field experience. Laboratory testing, also known as simulation testing, is a test or reliability test conducted in a manually simulated environment. It has good reproducibility and comparability. The advantage is that, limited by equipment, small volume and heavy products can be tested as a whole, while the field experience is based on the confirmation of reliable experience or measurement experience made on site and the environmental conditions on the site. Operating conditions and maintenance conditions should be recorded individually, which fully compensates for lack of laboratory experience. On-site testing has the advantage of objectivity and accuracy, but the disadvantage is that the test location cannot be controlled manually, so the test conditions and results are not repeatable.
The test methods used in environmental test equipment should be carefully selected. Different testing methods and different tools. For example, the field test method is required for large-scale environmental tests, and field tests or laboratory tests can be used for small-scale environmental tests, depending on the condition of test equipment and economic conditions. In general, reliability testing of environmental test equipment adopts field test methods.
Conclusion:
Reliability assessment of environmental test equipment can improve product quality and reliability, which is also very beneficial for industrial production. Environmental testing is involved in the development, production and use of products, which are designed, improved and implemented. The more honest and accurate the results of the environmental audit, the better the reliability of the product, that is, it will be used for product inspection work, inspection, environmental inspection.
