Vibration testing began to take shape around 40 to 50 years ago. Initially, the theory behind it wasn't widely recognized or appreciated for its significance. It wasn't until World War II that the importance of vibration testing became evident. During this time, many aircraft, ships, vehicles, and equipment experienced failures after use, with a significant percentage of components failing due to unexpected vibrations. Research revealed that most parts couldn't endure the long-term resonance caused by their own structures or the vibrations during transportation. This led to loosening, cracking, and ultimately mechanical failure, resulting in substantial losses. When these findings were made public, vibration testing—specifically the use of vibration test benches—gained widespread attention. Industries invested heavily in research and development to improve the process. With the establishment of modern vibration analysis and simulation theories, the methods and logic of vibration testing have continuously evolved. In today's world, where global trade and product circulation are more frequent than ever, the role of vibration testing has become even more critical.
The main purpose of a vibration test bench is to simulate controlled vibrations during testing, ensuring that a product can withstand the stresses of transportation or environmental vibrations throughout its lifecycle. It also helps determine the design and functional requirements of the product. According to statistical data, a 3% improvement in design quality can lead to a 20% increase in product recycling and an 18% reduction in unnecessary costs. Different vibration simulation techniques are used depending on the objective, such as resonance identification, resonance dwell, cycle scanning, random vibration, and stress screening. These tests help manufacturers identify potential weaknesses early, ensuring safer, more reliable, and longer-lasting products.
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