Test 1 Outline

Test 1 Outline - Test 1 Notes 1 letter size front and back...

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Test 1 Notes 1 letter size front and back cheat sheet bring calculator, ruler, pencil need 4X11 inch scantron bring a watch or some device to keep track of time Test Format 30 multiple choice questions (4 from DVD's) Total Points: 60 2 points each 10 multiple choice/short answer questions Total Points: 40 4 points each 1 optional problem Total Points: 20 Neatness/Organization Total Points: 5 Maximum Possible Points: 125 Symbols -average roughness: R_a -root mean square roughness: R_rms -normal stress: -shear stress: -shear strain: -shear strength: S_s -shear angle: -shear force: F_s(vector) -shear normal force: F_n(vector) -shear rate: -strain:
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-tensile strength: S_u -yeild strength: S_y -depth of cut: t_o -average chip thickness: t_c -top rake angle: -chip ratio: r -resultant force: R(vector) -friction force: F(vector) -friction normal force: N(vector) -friction angle: -thrust force: F_t(vector) -cutting force: F_c(vector) -cutting power: P_c -cutting speed: V -coeficent of friction: -material removal rate: MRR -unit power: P_u = U +specific energy (machining): P_u = U -feed (in/rev): f -feedrate (in/min): fr -angular speed (rad/s): -rotation speed (rpm): -length of cut (turning): L -depth of cut (turning): d -machining time: t -point angle: -viscosity: -compensate dimension: D_c -part dimension: D_p -linear shrinkage factor: s -axial stress (pressurized thin wall cylinder): -hoop stress (pressurized thin wall cylinder): -air pressure (blow molding): P -stress (blow molding): -thickness (blow molding): t -# of moles removed by ECM: n -current (ECM): I -valence electron of anode (ECM): z -faraday's constant: F -volume of removed material (ECM): V -molecular mass of anode (ECM): M -mass density (ECM): d -electrode area (ECM): A -voltage (ECM): E -resistivity of electrode (ECM): r -inter-electrode gap (ECM): g
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-[anode] material constant (ECM): C -discharging energy (EDM): E -voltage (EDM): V -discharging current (EDM): I -on-time (EDM): T_on -melting temperature (EDM): T_m -unit constant (EDM): K Extra Notes +Surface Integrity : includes residual stress, cracks, plastic deformation, laps/folds/seams, voids/inclusions, hardness +Yield Strength : normally lower than tensile strength +Tool Types (hardest to softest): Diamond, CBN, Coated WC, WC, HSS +Metrology includes measurement of dimension, form/shape, and surface +Standard time is bigger than observed time Units + Force : Newton (N) = [kg*m]/[s^2] + Pressure/Stress : Pascal (Pa) = [N]/[m^2] = [kg]/[m*s^2] + Energy/Work/Heat : Joule (J) = N*m= C*V = W*s = [kg*m^2]/[s^2] + Power : Watt (W) = [J]/[s] = V*A = [kg*m^2]/[s^3] - Voltage : Volt (V) = [W]/[A] = [J]/[C] = [kg*m^2]/[A*s^3] - Electric Charge : Coulomb (C) = s*A - Volumetric Flow : [m^3]/[s] - Angular Velocity : Omega ( ) = [rad]/[s] - Torque/Moment of Force : Newton Meter (N*m) = [m^2*kg]/[s^2] - Density/Mass Density : [kg]/[m^3] - Frequency : Hertz (Hz) = [1]/[s] +Strain : Doesn’t have a unit +Shear Strength : SI unit (Pa) US standard (psi) +Specific Energy/ Unit Power
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This note was uploaded on 11/08/2011 for the course ENTC 181 taught by Professor Hung during the Spring '08 term at Texas A&M.

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Test 1 Outline - Test 1 Notes 1 letter size front and back...

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