What are static tests and dynamic tests in wastewater treatment, and what are the differences and connections between them?

Testing machines are classified by the method of loading: they are divided into static testing machines for static loads and dynamic testing machines for dynamic loads. Static testing machines mainly include: universal testing machines, hydraulic universal testing machines, and electronic universal testing machines, pressure testing machines, tensile testing machines, torsion testing machines, and creep testing machines. Dynamic testing machines mainly include: fatigue testing machines, static and dynamic universal testing machines, unidirectional pulsating fatigue testing machines, impact testing machines, etc. Differences: 1. The structure of the machines differs; in the static mode, it is relatively simple, with lead screws typically being used to control the movement of the crossbeam. Hydraulic systems are used for applications with high loads, while electronic control is less common in this context, as it is mainly used for applications with low loads. Therefore, machines designed for higher loads rely on hydraulic drive. 2. Regarding the frequency of testing, the static mode generally cannot operate at high frequencies, as it is difficult to control the frame at such frequencies. Dynamic testing can be carried out at higher frequencies. 3. Sampling: In dynamic tests, when stress and other parameters are under control, sensors are required to provide timely and accurate feedback data; conventional static machines cannot achieve such precise control in this regard. 4. Sensors: Typically, when static sensors are used in dynamic tests, there are corresponding changes in aspects such as load accuracy. 5. The control mechanisms of conventional static machines cannot meet the requirements. 6. Software, data sampling rate, etc