1. Vibration testing is conducted to evaluate the ability of components, parts, and complete machines to withstand expected transportation and usage environments. Depending on the environment the product is exposed to, vibration testing can be categorized into the following types:
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Mechanical shock testing primarily simulates the impact effects that equipment and its components may encounter during transportation or use. By analyzing the instantaneous transient energy exchange of shock waves, it evaluates the product's ability to withstand external shock environments. The test aims to identify structural weaknesses and functional degradation, helping to understand the product's structural strength and its resistance to impacts, drops, and other characteristics. This effectively assesses product reliability and monitors production line consistency.
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Bump testing can be considered as the cumulative effect of mechanical shock testing—a process of repeated impacts. Compared to mechanical shock, the various magnitudes in bump testing are relatively smaller. Its purpose is to examine components, equipment assemblies, and other electronic parts of the specimen that are subjected to repeated impacts during transportation or in-use environments. The results are compared against the specimen's specifications to determine its ability to withstand the severity of bump conditions. This test is primarily aimed at unpackaged samples and samples whose packaging can be considered an integral part of the product itself (e.g., in transport cases). For the effects of repeated land transport vibration on the test object, bump testing simulates repeated jolts, severe shaking, or collisions, which vary with distance, road conditions, vehicle, trailer, and railway transport types. These effects occur at different frequencies and exhibit complex and random characteristics, with railway transport primarily experiencing medium-intensity jolts due to rail joints.
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The Temperature, Humidity, and Vibration Triaxial Combined Test refers to a test that integrates three environmental stresses: temperature, humidity, and vibration. This test evaluates the adaptability of products during transportation and use under combined temperature, humidity, and vibration conditions. Combined environmental testing is widely used in environmental suitability testing and reliability testing. Compared to single environmental tests, combined environmental testing can more realistically and practically reflect product performance in field use, better expose product defects, and is an essential and important testing method throughout the entire process of new product development, prototype testing, and product qualification certification.
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The falling ball impact test involves dropping a ball of specified mass from various heights, or dropping balls of different masses from a specified height, to determine the energy required to cause cracking in an adhesive specimen upon impact.
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