Advanced Manufacturing Flashcards
7 cards from real BME practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Advanced Manufacturing flashcards as text
In sheet metal forming, springback occurs because:
Answer: Elastic recovery causes the part to partially return toward its original shape after forming
After plastic deformation, the elastic component of strain recovers when the load is removed, causing the sheet to spring back toward its original geometry.
Which surface finish process is most appropriate for achieving a mirror-like finish on hardened steel molds?
Answer: Superfinishing (honing with fine abrasive stones)
Superfinishing uses fine abrasive stones with oscillating motion to remove micron-level surface asperities, achieving Ra values below 0.05 µm on hardened steel.
In a just-in-time (JIT) production system, the kanban card primarily serves as a:
Answer: Signal to authorize production or material replenishment
A kanban card is a visual signal that authorizes upstream production or delivery of exactly the quantity consumed, pulling material through the system.
What is the key advantage of friction stir welding (FSW) over conventional fusion welding for aluminum alloys?
Answer: Solid-state process avoids melting defects like porosity and hot cracking
FSW operates below the melting point, using frictional heat and plastic deformation, eliminating solidification-related defects common in fusion welding of aluminum.
In stereolithography (SLA) 3D printing, the photopolymer resin is cured by:
Answer: UV laser or projector selectively crosslinking the resin
SLA uses a UV light source to photopolymerize (crosslink) liquid resin layer by layer, building up the part from a vat of photosensitive material.
Which of the following is a primary benefit of cellular manufacturing layout?
Answer: Reduced material handling distance and faster throughput for part families
Cellular manufacturing groups machines by part family, reducing material handling, work-in-process inventory, and lead time compared to functional layouts.
In hot forging, the workpiece is heated above its recrystallization temperature primarily to:
Answer: Reduce flow stress and improve ductility for easier deformation
Heating above the recrystallization temperature dramatically lowers flow stress and restores ductility, allowing large plastic deformations with lower forming forces.