If you have facts or opinions relating to the following incomplete statements relating to non-destructive testing, please respond here on the Message Board and also, via e-mail, to me at tustin@equipment-reliability.com. Do you know any NDT specialists? I'm asking readers for help in writing an article for NDT specialists.
Buildings can sway at frequencies < 1 Hz but floor and wall vibrations, which can be troublesome in high-magnification X-raying, also in high-magnification video work, in chip manufacture and in robotic surgery, might range perhaps ___ to ____ Hz. Have I missed any NDT techniques in which vibrations are troublesome?
Vibration “signatures”, much used in preventive maintenance of vital machinery, range perhaps __ to ____ Hz.
Are NDT specialists ever concerned with bridges and other structures, where vibrations range perhaps ___ to ____ Hz? How about seismic disturbances (earthquakes) which range perhaps 1 to 35 Hz? Or with automotive vibrations, which range perhaps 10 to 500 Hz? Or with aircraft and space vehicle vibrations, which range perhaps 10 to 2,000 Hz?
This message has been edited by jariwaladeepak from IP address 63.109.246.250 on Oct 31, 2002 8:30 AM
This message has been edited by jariwaladeepak from IP address 63.109.246.250 on Oct 30, 2002 10:25 PM
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