Machine Design

How-to, in-depth technical articles for machine design engineers

Wind Systems

Towers, turbines, gearboxes; processes for shaping and finishing component parts.

Chemical Engineering

The industry gateway for chemical engineering and plant operations.

Quality Magazine

Techniques to improve quality on the shop floor and in manufacturing planning.

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Area

Many formulas exist for areas of common shapes. If a formula can not be found calculus can be used. The following are two intergrals can be used to calculate the area under a curve.