Beams, columns, plates, and shells
The 1700s and early 1800s were a productive period during which the mechanics of simple elastic structural elements were developed—well before the beginnings in the 1820s of the general three-dimensional…
Notes on hatching of sections
Hatching is generally used to show areas of sections. The simplest form of hatching may be based upon continuous thin lines at a convenient angle, preferably 45°, to the principle…
Concepts of stress, strain, and elasticity
The English scientist Robert Hooke discovered in 1660, but published only in 1678, that for many materials the displacement under a load was proportional to force, thus establishing the notion…
Mechanics of solids
Mechanics of solids, science concerned with the stressing, deformation, and failure of solid materials and structures. What, then, is a solid? Any material, fluid or solid, can support normal forces.…
Concept of sections, revolved and oblique sections
An orthographic projection of an object gives the external shape and details of the object clearly. We know that the invisible features of the object are shown in the projected…
Pipe Thread Cutting Machine
The most important element of any machine is screw threads without screw threads. There can not be any development in the field of engineering. Even machine tools operated by computers.…
The Most Scenic Flight Routes in Asia
The most scenic flight routes in Asia – seven wonderful possibilities to make traveling more enjoyable. Sometimes the best holiday sightseeing begins before the wheels touch down on the runway.…
Weld Defects and Weld Quality Testing
Every weld joint is inspected by a team of trained inspectors for weld defects. Welding defects may arise due to lack of skill in welders, use of incorrect materials, or…
Amazing Facts about Aerial Refuelling
Aerial refueling is the process of transmitting aviation fuel from one military aircraft to another during flight. The procedure lets the receiving aircraft to stay in the air longer, extending its…
Stunning Images of Vapour Trails Created By Planes
Stunning images of vapor trails created by planes: these photos of plumes of air billowing from the back ends of aircraft may seem like a cause for concern, especially when…
