Mechanical engineering

use of fluids under pressure to generate, control, and transmit power

section of a machine which is used to connect one mechanical part to another

bushing

thumb|Mineral crusher (left) used in 19th century [[Cornwall for comminution of tin ore; driven by water mill (right)]]

thumb|A swivel in a chain link thumb|Stainless steel anchor swivel thumb|A swivel in a link

the creative process of creating an engineering product or solution

overview of mechanical engineering technology

upright=1.3|thumb|Part of the Miles Glacier Bridge, with a "kludge" (temporary fix) to make the bridge usable after earthquake damage.

deformation of a metal surface due to friction

thumb|Galling on the threads not protected by PTFE tape on a NPT fitting (zoom in on first few threads for better view). thumb|250px|An electron microscope image shows transferred sheet-material accumulated on a tool surface during sliding contact under controlled laboratory conditions. The outgrowth of material or localized, roughening and creation of protrusions on the tool surface is commonly referred to as a lump. thumb|250px|The damage on the metal sheet, wear mode, or characteristic pattern shows no breakthrough of the oxide surface layer, which indicates a small amount of adhesive mater

roller element bearing that tolerates angular misalignment

the study of the dynamic properties of structures under vibrational excitation

theoretical angular velocity that excites the natural frequency of a rotating object

distance and direction to which a joint (anatomical or mechanical) can be extended

uneven movement in the form of accelerations and decelerations when objects in contact slide over each other; generating vibrations and mechanical wear

thumb|Foam in an egg carton which simulates the atomic surface structure of graphite, commensurable due to alignment in this photo thumb|Incommensurable due to twisting, so the valleys and hills don't line up

Prevention of transmission of vibration

analysis of accumulated variation in mechanical parts and assemblies

thumb|upright=1.35|A treadle loom; the treadles raise and lower the two heddles. The heddles are connected by a rope over the [[heddle pulleys, so that they rise and fall alternately. One treadle is attached to the bottom of each heddle.]]

external mechanical resistance against which a machine acts

subfields of building design and construction

mechanism to put something into motion by shaking or stirring

condition where the stress vector is zero across a particular plane

differential equation describing pressure distribution of thin viscous fluids

mobile plate or valve allowing to regulate the flow of air inside a chimney or other air handling equipment

power plant component

device used to lower water temperature

cooling fan

Wikimedia list article

Engineering discipline

The study of the deformation of bodies in the presence of frictional effects

thumb|A chairlift's return bullwheel thumb|A bullwheel of a tricable gondola lift

type of simple machine

mechanical and civil design philosophy

general equation-solving program

An idler-wheel is a wheel which serves only to transmit rotation from one shaft to another, in applications where it is undesirable to connect them directly. For example, connecting a motor to the platter of a phonograph, or the crankshaft-to-camshaft gear train of an automobile.

mechanical component

striking clock decorated using automata

tree felling machine which also functions to hold and accumulate cut trees

German engineering automation company

artificial physical object

diagram of the component velocities of a turbomachine's working fluid

treatise by John Wilkins published 1648

Brinelling is the permanent indentation of a hard surface. It is named after the Brinell scale of hardness, in which a small ball is pushed against a hard surface at a preset level of force, and the depth and diameter of the mark indicates the Brinell hardness of the surface. Brinelling is permanent plastic deformation of a surface, and usually occurs while two surfaces in contact are stationary (such as rolling elements and the raceway of a bearing) and the material yield strength has been exceeded.

in machining, the contact area between two objects – often used for the area of a screw head that directly connects to the attached part.

buoyant object used to indicate liquid level