Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Textbook Question
Chapter 29, Problem 29QTP
If the Reynolds number for water flow through a pipe is 2000, calculate the water velocity if the pipe diameter is (a) 10 mm; (b) 100 μm. Do you expect flow in MEMS devices to be turbulent or laminar? Explain.
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2. This problem is a real application of the impedance method derived from Prof. Shen's research.
His research team built a piezoelectric microactuator to be placed in inner ears as a hearing
aid. As shown in Fig. 2, the piezoelectric microactuator was submerged in fluid and its
impedance was measured. When the microactuator deteriorated, its impedance would change.
Therefore, the impedance could be used as an indicator of the wellbeing of the microactuator.
We developed a circuit model of the piezoelectric microactuator (see Fig. 3), where Cp was
the capacitance from the microactuator, Rp was the resistance of the protection layer of the
microactuator, R, and L, were the resistance and inductance of the wiring circuit. A voltage
1
Vs(s)est drove the circuit and a corresponding current I,(s)est flowed into the circuit. Answer
the following questions.
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Chapter 29 Solutions
Manufacturing Engineering & Technology
Ch. 29 - Define MEMS, SIMPLE, SCREAM, and HEXSIL.Ch. 29 - Give three examples of common...Ch. 29 - Why is silicon often used with MEMS devices?Ch. 29 - Describe bulk and surface micromachining.Ch. 29 - What is the purpose of a spacer layer in...Ch. 29 - What is the main limitation to successful...Ch. 29 - What are common applications for MEMS andMEMS...Ch. 29 - Prob. 8RQCh. 29 - Prob. 9RQCh. 29 - Explain the differences between stereolithography...
Ch. 29 - What is MolTun? What are its main advantages?Ch. 29 - What is HEXSIL?Ch. 29 - What do SIMPLE and SCREAM stand for?Ch. 29 - Describe the difference between isotropic etching...Ch. 29 - Lithography produces projected shapes, so true...Ch. 29 - Which process or processes in this chapter allow...Ch. 29 - What is the difference between chemically reactive...Ch. 29 - The MEMS devices discussed in this chapter are...Ch. 29 - Explain how you would produce a spur gear if...Ch. 29 - Prob. 20QLPCh. 29 - Prob. 21QLPCh. 29 - Prob. 22QLPCh. 29 - Is there an advantage to using the MolTun process...Ch. 29 - The atomic-force microscope probe shown inFig....Ch. 29 - Estimate the natural frequency of the cantilever...Ch. 29 - Using data from Chapter 28, derive the time needed...Ch. 29 - It is desired to produce a 500 m by 500...Ch. 29 - If the Reynolds number for water flow through a...Ch. 29 - Prob. 30SDPCh. 29 - Prob. 31SDPCh. 29 - Prob. 32SDPCh. 29 - Design a micromachine or device that allows the...Ch. 29 - Conduct a literature search and determine the...Ch. 29 - Perform a literature search and write a...
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