In the above, the above small and medium series explains the purpose and type of the vibration test. Next, what other things we need to focus on, and see Xiaobian and then explain it to you. 7. What is the duration of the trial (number of times)? The vibration time represents the time required for the entire test, and the number of times represents the number of sweep cycles required for the entire test. Eight, what is the frequency sweep cycle? Sweep cycle: scans back and forth within the specified frequency range For example: 5Hz - 50Hz - 5Hz, scan from 5Hz to 50Hz and then scan to 5Hz. 9. What is gravity acceleration? Gravity acceleration: The acceleration of an object on the surface of the earth due to gravity. 1gn=10m//s2 (GB/T 2422-1995 Environmental Test Terminology for Electrical and Electronic Products) X. How many directions are tested in the vibration test? How to distinguish the direction? In addition to the relevant specifications, vibration tests shall be carried out in three mutually perpendicular directions of the product. 11. What is fixed frequency vibration? Fixed-frequency vibration refers to the test of different magnitudes of various vibration parameters at a specified fixed frequency point. 12. What is random vibration? For any given moment in the future, its instantaneous value cannot be predetermined vibration. In a general transportation environment, the vibration environment generated by the vehicle in transit is a random vibration, even at the same time, each vibration has a different amount of vibration, when performing a random vibration test, due to the same There are vibration values ​​at different frequencies. Rubber Eraser,School Students Eraser,Eraser For Kids,Toys Eraser Shaoxing Daling Stationery Co., Ltd. , https://www.sxdaling.com
"Twelve" points teach you to become a vibration testing machine