Machine Design

Study lessons

1. 1

   Stresses, Factor of Safety, and Fatigue

   Master simple and combined stresses, principal stresses, factor of safety, stress concentration, and fatigue design with the Soderberg and Goodman criteria, the computational backbone of the Machine Design paper on the MELE.

   15 min
2. 2

   Shafts, Keys, and Couplings

   Design shafts for torsion, bending, and combined loading, apply the power-torque relation and critical speed, and size keys, splines, and couplings, the rotating-power backbone of the MELE Machine Design paper.

   15 min
3. 3

   Gears

   Learn spur, helical, bevel, and worm gears, module and diametral pitch, velocity ratio and gear trains, and the Lewis tooth-load equation, high-yield computation on the MELE Machine Design paper.

   15 min
4. 4

   Belts, Chains, and Flexible Drives

   Work the belt tension ratio and transmitted power for flat and V-belts, add centrifugal tension, size chains and sprockets, and tell slip from creep, standard MELE flexible-drive computation.

   15 min
5. 5

   Bearings

   Compute rolling-element bearing life from the C/P relation, work journal bearings and the Petroff equation, understand lubrication regimes, and select the right bearing, a core MELE Machine Design skill.

   15 min

Section practice test

3 test sets covering the whole Machine Design section, 90 original questions with explanations. After you finish the lessons above, prove it here. Randomized every run.