What does the impact test measure? Principle of mechanical impact testing machine

Date：2023-03-28 15:17:05Views：579

Impact testing is one of the commonly used mechanical testing methods for materials, which is used to evaluate the toughness and impact resistance of materials under impact or repeated loading. Mechanical impact testing machines are equipment used to evaluate the impact resistance of materials, components, and products under high-speed impact. Through the testing of mechanical impact testing machines, important information such as the failure mode, fracture strength, and energy absorption capacity of samples under high-speed impact can be obtained, providing a reference basis for the design, selection, and improvement of materials and products.

The principle is to use a high-speed impactor to transmit a certain amount of energy impact force to the tested sample, and evaluate its impact resistance by measuring the deformation, cracks, and fractures of the sample. Impact testing is often widely used in the fields of metal materials, plastic materials, rubber materials, composite materials, and other fields to evaluate the mechanical properties of materials and provide a reference basis for engineering design and material selection.

The mechanical impact testing machine consists of three parts: an impactor, a measurement system, and a data acquisition system. The impactor is usually driven by air pressure or electromagnetism, and can control parameters such as impact speed, impact angle, and impact energy. Measurement systems can be used to record parameters such as deformation, stress, strain, and displacement of samples. Common measurement methods include high-speed photography, strain gauges, and accelerometers. The data acquisition system is used to collect and process measured data to obtain information such as the impact response curve and various mechanical parameters of the sample.

In impact testing, specimens are typically standardized, and they are subjected to an impact or impact load under certain conditions, such as temperature, load rate, and direction. When a sample is subjected to an impact load, its morphology and internal structure may change, for example, the sample may undergo plastic deformation, fracture, or fracture. The toughness and impact resistance of a material can be evaluated by measuring the degree of deformation, fracture, or fracture of the specimen after impact. In general, the higher the toughness of a material, the more energy it can absorb and undergo plastic deformation rather than cracking when subjected to impact. The impact resistance of a material usually refers to the maximum load that the material can withstand when subjected to impact.

The above is the relevant content of the impact test organized by the Core Breaking Test Team, and I hope it can be helpful to you. Our company has a team of professional engineers and industry elites, and has three standardized laboratories with an area of over 1800 square meters. It can undertake various testing projects such as electronic component testing and verification, IC authenticity identification, product design and material selection, failure analysis, functional testing, factory incoming material inspection, and tape weaving.