ROTATING CANTILEVER BEAM FATIGUE TESTING
MET3132: Engineering Materials Laboratory
Objective: To determine the fatigue characteristics of a material using rotating cantilever
fatigue tester
Background: See text, lecture notes.
Safety: High speed, dynamic stability, trigger, electric shock (motor),
Equipment, Instruments, supplies:
Tester
Caliper
Wrench (for collets)
Samples: standard specimens-geometry, neck diameter, shank diameter,
Procedure:
Attach specimen-collet, tightness
Loading – calculate M from desired stress =Mc/I etc.
Switches – power, trip,
Resetting counter
Speed setting dial ~5000-8000 RPM
Data:
Attached table
Report:
Individual memo.
Background,
Specimen and test setup,
Data
Plot S-N – trend line
Discussion and conclusion.
Endurance limit determined from plot. If not, draw endurance limit for design purposes.
Include your signed dated handout as attachments.
References:
Text
Handout
ASTM Standard-find out and mention in your Background section.
