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Common Mechanical Engineering Terms. Ball and Detent. (n) A simple mechanical arrangement used to hold a moving part in a temporarily fixed position. Handbook of Mechanical Engineering Terms - Free ebook download as PDF File .pdf), Text File .txt) or read book online for free. and engineers of various courses and fields pertaining to Mechanical Dictionary Mechanical Engineer. or by any means, electronic, mechanical, photocopying, recording or .. has been endorsed by IREB as the standard glossary of terms for the.

Mechanical Engineering Glossary Pdf

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Department of Aerospace and Mechanical Engineering students learn something in class A, and this information is used with different terminology or in a If your formula contains a difference of terms, determine what. Department of Mechanical Engineering, Auburn University,. Auburn, Alabama. San Diego San Francisco New York Boston Terminology and Notation. Most of the terms listed in Wikipedia glossaries are already defined and explained within Wikipedia itself. However, glossaries like this one are useful for looking up, comparing and reviewing large numbers of terms together.

Shaft Currents: Induced circulating currents due to machine asymmetries or supply voltage effects. Shunt Excitation: DC machine with field coils connected in parallel with the armature.

Skew: Non parallel stator and rotor slot alignment. Slip : The difference between the synchronous speed and the actual speed of a rotor expressed as per unit or as a percentage of the synchronous speed. Slot: A recess in a core in which the conductors of a winding may be placed. Squirrel Cage: Rotor winding consisting of a number of conducting bars with their ends connected by conducting rings.

Space Factor: The ratio of the area of bare insulated copper conductors to the available slot area. Ss Salient Pole: A field pole which projects from the yoke or hub towards the air-gap. Secondary Winding: A winding in an electrical machine which is not connected to the external electrical system. Series Excitation: DC machine with field coils connected in series with the armature.

Service Factor: The factor by which the rated power can be increased under specified conditions of service.

Shaft Currents: Induced circulating currents due to machine asymmetries or supply voltage effects. Shunt Excitation: DC machine with field coils connected in parallel with the armature. Skew: Non parallel stator and rotor slot alignment. It is suitable as a gamma radiation source, especially in radiography and therapy.

Materials 17 CHILL — 1 A metal insert embedded in the surface of a sand mould or core or placed in a mould cavity to increase cooling rate at that point.

A similar microstructure is found in cast magnesium alloys containing silicon as Mg2Si. The bonding may have been accomplished by rolling, welding, casting, heavy chemical deposition or heavy electroplating.

COAL TAR — Also called crude oil, when subjected to fractional distillation and purification, yields a variety of useful products-neutral, acidic, and base oils.

It is used as a gamma radiation source in industrial radiography and therapy. An example is carbon fibres in an epoxy matrix. Loads applied to the structure are carried by the fibres. COPPER — A reddish, soft, ductile metal with very good heat and electrical conductivity and is the basic element in brass and bronze.

CORE — 1 In a metal casting, the hollow parts which cannot be shaped as easily by the pattern that are made by using formed sand shapes, that are strengthened by baking or by using epoxy.

Rock sand, river bed and sea shore sand, commonly known as sharp sand, used for making of cores in the foundry because they are capable of withstanding high temperatures, and resisting the penetrating action of the molten metal. It has high electrical conductivity and high temperature resistance.

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This steel is used for tools, dies and better grades of cutlery. CUNIFE — Cunife is a copper-nickel iron alloy that is malleable, ductile and machinable, even in an age-hardened form. Magnets are formed from wire stock in round, square, or rectangular form. CURIE — The quantity of a radioactive nuclide in which the number of disintegrations per second is 3.

Dendrite generally grow inward from the surface of a mould. Used as a cutting tool, and a grinding tool and to dress grinding wheels. DROSS — The scum that forms on the surface of molten metals largely because of oxidation but sometimes because of the rising of impurities to the surface. This demands a sand that when dried or baked will give strength, porosity and permeability. DURALUMIN — Aluminium alloy containing copper, manganese and magnesium, which can be cast, forged or stamped, and is widely used for sheets, tubes, forgings, rivets, nuts, bolts and similar parts.

EUTECTIC — Mixture an alloy in which the proportions of the constituents are such that the mixture has a lower melting point than any of the constituents.

It has very good permeability and moderate binding qualities. Used in ground form in cores and moulds to increase hot compressive strength.

Iron which contains little or no carbon.

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It is very soft and ductile and is known as alpha iron. A magnetic form of iron.

In some cases the ferroalloys may serve as deoxidizers. A reinforced plastic manufacturing material with many applications. FILTER — In radiography a device, usually, a thin metallic layer inserted into a beam of radiation so as to modify the transmitted spectrum of radiation. It may be used to enhance or reduce contrast or minimize undesirable scattered radiation. FIXER hypo — A photographic processing solution, the principle function of which is to dissolve the undeveloped silver halide grains from the developed film, thus making the image more prominent.

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It often serves also to harden the gelatine and halt the developing process. FLUX — A solid, liquid or gaseous material that is applied to solid or molten metal in order to clean and remove oxides.

Foam rubbers are formed by the inclusion of chemicals in rubber compounding which form gases during vulcanization. Often used in wire form for jewellery and decorative applications. GLASS — Transparent substance produced by the fusion of sand and certain metallic salts, of which soda compounds are most common.

Glue laminated beam will support large loads and can span long distances with only end support. GRIT SIZE — Nominal size of abrasive particles in a grinding wheel corresponding to the number of openings per linear inch in a screen through which the particles can just pass.

It is useful in estimating radiographic exposure.SHIM bearing — A strip of copper or similar material used under a bearing cap, for example, to increase bearing clearance. At the higher temperatures, it is known as upper or feathery bainite.

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Shaft Currents: It may be paper, wire screen or rotor designed to keep oil clean. TIN — A silvery white, soft metal used in solders and as a plating material.

This has high carbon content, averaging between 2. Used as a constituent in some alloys, and in the manufacture of lead shot. Metals exhibit plasticity in varying amounts.