10. Stereolithography involves a chemical reaction to create a 3D solid. True False 11. Which of the following factors determines the selection of the light source (i.e., the laser wavelength) in an SLA printer? The resolution required The optical properties of the photoinitiator The size of the build platform The refractive index of the ...

Question: "(SI units) Stereolithography is to be used to build the part in Figure 32.1 in the text. Dimensions of the part are: height = 125 mm, outside diameter = 75 mm, inside diameter = 65 mm, handle diameter = 12 mm, handle distance from cup = 70 mm measured from center (axis) of cup to center of handle.

A tube with a rectangular cross section is to be fabricated by stereolithography. Outside dimensions of the rectangle are 38 mm by 60 mm, and the corresponding inside dimensions are 30 mm by 52 mm (wall thickness = 4 mm except at corners). The height of the tube (z-direction) = 40 mm. Layer thickness = 0.10 mm, and laser spot diameter = 0.25 mm.

In the stereolithography process, the layer thickness = 0.15 mm. Diameter of the laser beam spot = 0.40 mm, and the beam is moved across the surface of the photopolymer at a velocity of 2200 mm/s. Compute the minimum possible time (use units of hours, 3 significant figs) required to build the part, if 25 s are lost each layer to lower the ...

In the stereolithography process, the layer thickness = 0.15 mm. Diameter of the laser beam spot = 0.40 mm, and the beam is moved across the surface of the photopolymer at a velocity of 2200 mm/s. Compute the minimum possible time required to build the part, if 25 s are lost each layer to lower the height of the platform that holds the part.

Question: 5) One of the major advantages of stereolithography is that it can use semi- transparent polymers, so that internal details of parts can be discerned readily. List and describe a few parts in which this feature is valuable. (3 examples)

The first step to understanding why desktop stereolithography (SLA) systems use an inverted configuration is to consider the design and operation of these systems, particularly how the build platform starts submerged in the resin and rises upwards layer by layer.

A tube with a rectangular cross section is to be fabricated by stereolithography. Outside dimensions of the rectangle are 38 mm by 60 mm, and the corresponding inside dimensions are 30 mm by 52 mm (wall thickness = 4 mm except at corners). The height of the tube (zdirection) = 36 mm. Layer thickness = 0.10 mm, and laser spot diameter = 0.25 mm.

Engineering; Mechanical Engineering; Mechanical Engineering questions and answers; Assume the line width in a stereolithography operation is 0.20 mm. Estimate the time (in seconds) required to cure a layer defined by a 48-mm-diameter circle of the adjacent lines overlap each other by 15% and the laser traverse rate is 0.25 m/s.

Answer to 3. Which of the following rapid prototyping processes. 3. Which of the following rapid prototyping processes starts with a photosensitive liquid polymer to fabricate a component: (a) ballistic particle manufacturing, (b) fused-deposition modeling, (c) selective laser sintering, (d) stereolithography, and (e) laminated-object manufacturing?