Dictionary of Engineering

forest engineeringforest engineering [ENG] A branch of engi- forms analysis chart See form process chart.neering concerned with the solution of forestry { ¦fȯrmz ə¦naləsəs chärt }problems with regard to long-range environmen- form scabbing [CIV ENG] In placing of concretetal and economic effects. { färəst enjənir using formwork, removal of the surface layer ofiŋ }concrete that adheres to the form when it isforklift [MECH ENG] A machine, usually poweredremoved. { fȯrm skabiŋ }by hydraulic means, consisting of two or formwork [CIV ENG] A temporary wooden cas-more prongs which can be raised and lowered ing used to contain concrete during its placingand are inserted under heavy materials or ob- and hardening. Also known as shuttering.jects for hoisting and moving them. { fȯrklift } { fȯrmwərk }forklift truck See fork truck. { fȯrklift trək } fors See G; gram-force. { fȯrs }fork pocket [MECH ENG] An opening in the Fortin barometer [ENG] A type of cistern ba-base of a container or pallet for insertion of the rometer; provision is made to increase or decreaseprong of a forklift. { fȯrk pakət }the volume of the cistern so that when afork truck [MECH ENG] A vehicle equipped with pressure change occurs, the level of the cisterna forklift. Also known as forklift truck. { fȯrk can be maintained at the zero of the barometertrək } scale (the ivory point). { fȯrdən bərämədform [CIV ENG] Temporary boarding, sheeting, ər }or pans of plywood, molded fiber glass, and so forward bias [ELECTR] A bias voltage that is appliedforth, used to give desired shape to poured concreteto a pn-junction in the direction thator the like. { fȯrm } causes a large current flow; used in some semiconductorform clamp [CIV ENG] An adjustable metaldiode circuits. { ¦fȯrwərd bīəs }clamp used to secure planks of wooden forms for forward-looking infrared imager [ENG] An infraredconcrete columns or beams. { fȯrm klamp }imaging device which employs an optoconcreteform cutter See formed cutter. { fȯrm kədər } mechanical system to make a two-dimensionalformed cutter [MECH] A cutting tool shaped to scan, and produces a visible image correspond-make surfaces with irregular geometry. Also ing to the spatial distribution of infrared radiation.known as form cutter. { ¦fȯrmd kədər }Abbreviated FLIR imager. Also known asform factor [ELEC] 1. The ratio of the effective framing imager. { fȯrwərd ¦lu˙ kiŋ infrəredvalue of a periodic function, such as an alternatingimijər }current, to its average absolute value. 2. A forward pass [ENG] In project management,factor that takes the shape of a coil into account scheduling from a known start date and calculat-when computing its inductance. Also known ing the finish date by proceeding from the firstas shape factor. [MECH] The theoretical stress operation to the last. Also known as forwardconcentration factor for a given shape, for a per- scheduling. { ¦fȯrwərd pas }fectly elastic material. { fȯrm faktər }forward path [CONT SYS] The transmission pathform grinding [MECH ENG] Grinding by use of from the loop actuating signal to the loop outputa wheel whose cutting face is contoured to the signal in a feedback control loop. { fȯrwərdreverse shape of the desired form. { fȯrm path }grīndiŋ }forward scheduling See forward pass. { ¦fȯrwərdforming [ELEC] Application of voltage to an skejəliŋ }electrolytic capacitor, electrolytic rectifier, or forward transfer function [CONT SYS] In a feed-semiconductor device to produce a desired per- back control loop, the transfer function of themanent change in electrical characteristics as forward path. { ¦fȯrwərd tranzfər fənkshən }a part of the manufacturing process. [MECH Foster’s reactance theorem [CONT SYS] TheENG] A process for shaping or molding sheets, theorem that the most general driving point imrods,or other pieces of hot glass, ceramic ware, pedance or admittance of a network, in whichplastic, or metal by the application of pressure. every mesh contains independent inductance{ fȯrmiŋ } and capacitance, is a meromorphic functionforming die [ENG] A die like a drawing die, but whose poles and zeros are all simple and occurwithout a blank holder. { fȯrmiŋ dī } in conjugate pairs on the imaginary axis, and informing press [MECH ENG] A punch press for which these poles and zeros alternate. { fȯsforming metal parts. { fȯrmiŋ pres } tərz rēaktəns thirəm }forming rolls [MECH ENG] Rolls contoured to Foucault pendulum [MECH] A swinging weightgive a desired shape to parts passing through supported by a long wire, so that the wire’s upperthem. { fȯrmiŋ rōlz }support restrains the wire only in the verticalforming tool [DES ENG] A nonrotating tool that direction, and the weight is set swinging withproduces its inverse form on the workpiece. no lateral or circular motion; the plane of the{ fȯrmiŋ tül } pendulum gradually changes, demonstrating theform process chart [IND ENG] A graphic representationrotation of the earth on its axis. { fükō penof the process flow of paperwork forms. jələm }Also known as forms analysis chart; functional foul bottom [CIV ENG] A hard, uneven, rocky orforms analysis chart; information process analy- obstructed bottom having poor holding qualitiessis chart. { ¦fȯrm ¦präsəs chärt }for anchors, or one having rocks or wreckage232