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Engineering IV 10/8/2012
Wahnish
34
Engineering
10th Grade
10/08/2012

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Term
1) Rapid prototyping processess use systems that are low cost, small in size, fast, easy to use, and are suitable for an office environment.
2) Collective term for all rapid prototyping activities.
Definition
3D Printing
Term
Fabrication of a part by adding material.
Definition
Additive process
Term
The process of putting a product together out of separate parts.
Definition
Assembling
Term
Length of time for the physical construction of a rapid prototype, excluding preparation and post-processing time. Also known as run time.
Definition
Build Time
Term
The process in which solid material is made to a liquid, poured into a mold, and allowed to harden in the shape of a mold.
Definition
Casting
Term
Any of various hard, brittle, heat-resistant, and corrosion-resistant materials made by shaping and then firing a nonmetallic mineral, such as clay, at a high temperature.
Definition
Ceramics
Term
Physical model intended primarily for design review and not meant to be sufficiently accurate or durable for full function or physical testing.
Definition
Concept Model
Term
Process in which properties of a material are changed using, mechanical, thermal, and chemical means.
Definition
Conditioning Process
Term
Similar to permanent mold casting except that metal is injected to the mold under high pressure.
Definition
Die Casting
Term
A process in which an electrode spark is used to erode small amounts of material from a work piece.
Definition
Electrical Discharge Machining
Term
A process in which a stream of electrolyte is pumped at high pressure through a gap between positively charged work and the negatively charged tool.
Definition
Electrochemical Machining
Term
Resources that are in limited supply.
Definition
Exhaustible Supply
Term
Machining a surface to size with a fine feed produced in a lathe, milling machine, or grinder.
Definition
Finishing Process
Term
A process by which metal is heated and shaped by plastic deformation by suitably applying comprehensive force.
Definition
Forging
Term
A process that changes the size and shape of a material by a combination of force and a shaped form.
Definition
Forming Process
Term
An operation that removes material by rotating an abrasive wheel or belt against the work.
Definition
Grinding
Term
Material that has been changed from raw material so that it is ready to be used in manufacturing. Also referred to as standard stock.
Definition
Industrial Material
Term
A process during which plastic is heated in a machine and forced into a cavity by a screw or ram. The material solidifies and is then ejected.
Definition
Injection Molding
Term
Any category of electropositive elements that usually have a shiny surface, are generally good conductors of heat and electricity, and can be melted or fused, hammered into thin sheets, or drawn into wires.
Definition
Metals
Term
A manufacutring process in which the industrial material is made into a liquid. The liquid is then introduced (poured or forced) into a prepared mold of proper design.
Definition
Molding
Term
Materials that undergo a permanent change in shape or size when subjected to a particular amount of stress.
Definition
Plastics
Term
Liquid resin material that utilizes light (visible and ultraviolet) as a catalyst to initiate polymerization, in which the material cross-links and solidifies. The technique is used by various rapid prototyping technologies.
Definition
Photopolymer
Term
A common practice that includes clean up and finishing procedures on models after they are removed from a rapid prototyping machine. It may also include mechanical or chemical removal of the support structures, powder removal, and surface finishing.
Definition
Post Processing
Term
The first step in manufacturing where raw materials are processed into a usable form for further manufacture.
Definition
Primary Processing
Term
A full-scale working model used to test a design concept by making actual observations and necessary adjustments.
Definition
Prototype
Term
Computer-controlled additive fabrication.Commonly used synonyms for RP are three-dimensional printing, additive fabrication, freeform fabrication, solid freeform fabrication, and stereolithography. Not that most of these synonyms are imprecise.
Definition
Rapid Prototyping
Term
Basic substance in its natural, modified, or semi-processed state, used as an input to a production process for subsequent modification or transformation into a finished good.
Definition
Raw Materials
Term
Biological materials that can be replaced.
Definition
Renewable Resources
Term
A process of pressing moist sand around a pattern to make a mold. The pattern is removed, leaving a cavity in the sand. The cavity is the mold that will be filled with liquid metal. The result will be a casting that is identical in shape to the original patter.
Definition
Sand Casting
Term
A process that removes excess material to change the size, shape, or surface.
Definition
Separating
Term
A rapid prototyping process that fabricates a part layer-wise by hardening a photopolymer with a guided laser beam.
Definition
Stereolithography
Term
Processes that remove material to change the size, shape, or surface of a part. There are 2 groups of separating processes: Machining and Shearing.
Definition
Subtractive Process
Term
Process to heat a thermoplastic sheet until it softens and then force the hot a pliable material against the contours of a mold using vacuum pressure.
Definition
Vacuum Forming
Term
A process that uses a high speed jet of water emitted from a nozzle under high pressure (10,000-60,000 psi or greater). The advantage of water jet cutting is that it does not create a burr and is a low temperature process.
Definition
Water Jet Cutting
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