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{ Category Archives } Fatigue

Random response analysis of avionics tray

A client approached us with a difficult electronics packaging problem. Their customer required a commercial, off-the-shelf (COTS) board to be included in a device that must pass the MilSpec random response envelope for a particular aircraft. Since the COTS board could not survive the vibration unless the enclosure provided shock and vibration isolation, the objective […]

2007 12 14 Charles McCreary Machine design
Random Response
Vibration
FEA
Finite Element Analysis Comments (0)

Machine Design - Fatigue

A client was experiencing failure in a cantilevered shaft which supported a heavy spool that was subject to frequent rapid starts and stops. The initial design incorporated a a 3″ diameter shaft that was supported by two bearings with a drive gear halfway between the bearings. A larger, 5″ diameter shaft was fillet welded onto […]

2007 12 13 Charles McCreary Machine design
FEA
Finite Element Analysis Comments (0)