CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

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Diagrams and Calculator Inputs
 Slab Width H  
 Notch Depth t  
 Notch Radius r  
 Distance between Notches d H - 2t
 Slab Thickness h << H

Stress Concentration Factors

Input data
H = 100 mm
t = 10 mm
r = 10 mm
Answer
 2.27  (2.41 in some literatures)
 
 2.83  (3.02 in some literatures)
 
Note that the stress concentration factors are calculated from experimental data using curve fitting, so only two decimal places are given.
CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.