Quiz
Additive Manufacturing Exam 2 Prep
Questions in this quiz (19)
1Ch10 (10/28) In the Directed energy deposition (DED) process which feed nozzle configuration has the best energy capture efficiency when using powder?
- ASingle Nozzle Feed
- BCoaxial Nozzle Feed
- C4 Nozzle Feed
2Ch 17 (11/7) What is the rule that tells us of the STL is valid and does NOT need repair or modification?
- AThe units in the STL match the AM machine units.
- BThe number of faces deivided by the number of edges must equal 2/3
- CThe file size of the STL is 2/3 the file size of the CAD geometry
- DThe STL converts to .Gcode without an issue
3For best surface smoothness and accuracy in extrusion based printing, a geometric feature should be printed in which plane?
- AYZ
- BXY
- CZX
4Mass flow through the extrusion nozzle is a function of all of the following parameters except
- Amaterial viscosity
- Bnozzle geometry
- Cpressure drop
- Dprinthead velocity
5Which of the following is NOT a method used in Material Jetting 3D printing to formulate liquid material suitable for droplets
- AEvaporate
- BMix monomer/pre-polymer with polymerization initiator
- CUse additives to obtain acceptable fluid characteristics
- DDissolve in solvent
- EMelt
- FSuspend in carrier liquid
6Which of the following terms is NOT included in the Sweet equation for total gauge pressure calculations for droplet jetting?
- Aturbulent flow
- Bsurface tension
- Ckinetic energy
- Dviscous friction
7Which of the following is NOT a similarity between polymer Binder Jetting and polymer Powder Bed Fusion?
- AUnprinted powder fully recyclable
- BSelf supporting
- CPart nesting within powder bed volume
- DCan leave gaps to print final assemblies and kinematic joints
8Which of the following is NOT a mechanism used to achieve bonding between layers in Sheet Lamination processes?
- AClamping
- BAdhesive bonding
- CThermal bonding
- DUltrasonic welding
- ELaser cladding
9In Directed Energy Deposition, the melt pool volume and height depend on all of the following except
- APowder flow rate
- BSurface morphology
- CLaser power
- DScan rate
- EMaterial density
- FLaser focal plane location with respect to powder depth
10Directed Energy Deposition AM machines include sensors to provide closed loop feed back control of process parameters for which of the following purposes (list all that apply)?
- AControl surface finish
- BControl deposit thickness using travel speed adjustment based on sensor feedback
- CIncrease build speed
- DControl solidification rate (which affects microstructure and properties
11In the algorithm to calculate the profile for a single layer slice, which scenarios contribute to the current layer profile? (indicate all that apply)
- AAll vertices above or below intersecting plane
- BTwo vertices lie on the plane
- CSingle vertex directly on the plane
- DOne vertex above or below current layer, two vertices on opposite side
- EThree vertices lie on the plane
12Which of the following is NOT a challenge for solid modeling CAD systems when designing parts for additive manufacturing?
- ADefining property variation when process-structure-property relationships are integrated with geometry
- BRepresenting lofted and blended surfaces
- CDefining material variation when materials are functionally graded or conformal to geometry
- DDefining hierarchical representations when feature sizes can span several orders of magnitude
13Which one of the following is NOT a motivation for direct digital manufacturing?
- ALot size of one is economical
- BComplex shapes
- CUnique customized shapes
- DDigital record
- ENo hard tooling
- FLow recurring costs
- GElectronic spare parts
- HFast turnaround
14In Additive Manufacturing, traditional design for manufacture rules do not generally apply while traditional design for assembly rules still apply.
- ATrue
- BFalse
15Which of the following is NOT a reason for 3D printing with composites materials?
- AStiffness tailoring
- BSimplifying the process
- CReinforcement
- DDimensional stability
16What is the acceptable range for the printing indicator for a successful print?
- Abetween 1 and 10
- Bbetween 0 and 1
- Cbetween 0 and 100
- Dbetween 10 and 20
- Ebetween 5 and 10
17Binder jetting printing requires supports for overhanging features?
- ATrue
- BFalse
18which are technical challenges of material jetting
- AHigh nozzle density necessary for high resolution
- BNozzle clogging
- Cpoor availibilty of suitable materials
- Dhigh residual stress is hard to avoid
19Which are applications of MJ processes
- AMedical Industry - Human Anatomy
- BBeauty Industry - Fingernail Polish
Information
- Description
- Starting at chapter 8 (Binder jetting) to the end of the course
- Author
- Cohlman pritchard
- Language
- English
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