ENGINEERING DESIGN PROCESS
3rd Edition
ISBN: 9781305253285
Author: HAIK
Publisher: CENGAGE L
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Chapter 7.9, Problem 9P
Can poor performance relative to one specification always be compensated for with high performance on the other specifications? Give examples.
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Topics we discussed:
Statics of Rigid Bodies, Force System of a Force, Moment of a Force, Moment of a Force-Scalar Formulation, Moment of a Force-Vector Formulation, and Principle of Moment, Simplification of a Force System and Couple System, Reduction of Simple Distributed Load
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Some international (e.g., ISO) standards become national standards. Give one example, citing the original standard and its national counterpart.
(a) A very important component of a system has a mean time between failures of 100 hr and a mean time to repair of 10 hr. Determine the inherent availability of the system.
(b) If the equipment in Q7 (c i) above is required to meet an inherent availability requirement of 0.985 and a mean time between failures of 100 hr. Calculate the permissible mean time to repair and if the system as a mean of the time intervals between corrective maintenance actions of 900 hrs and the sum of the mean corrective maintenance time intervals including supply downtime and administrative down time of 10 hrs Determine the operational availability of the system
Chapter 7 Solutions
ENGINEERING DESIGN PROCESS
Ch. 7.9 - A set of measurable parameters with values...Ch. 7.9 - Given the need statement Design a domestic heating...Ch. 7.9 - Generate engineering characteristics for the...Ch. 7.9 - Develop a list of specifications for the following...Ch. 7.9 - List a set of metrics corresponding to the need...Ch. 7.9 - Devise a metric and a corresponding set for the...Ch. 7.9 - How might you establish precise and measurable...Ch. 7.9 - Can poor performance relative to one specification...Ch. 7.9 - Use a Web search engine to identify a list of...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Plywood Manufacturing . A product engineer wants to optimize the cutting of strips of wood, which are used to make plywood. To cut the wood strips, the log is held in place by chucks which are inserted at each end. The log is then spun while a saw blade cuts off a thin layer of wood. The engineer measures the torque that can be applied to the chucks before they spin out of the log, under different conditions of log diameter, log temperature, and chuck penetration. Introduction and objective for this topic.arrow_forwardTolerance is .. Your answer Clearance is . Your answer Why it is important to generate a number of alternatives for each component or subassembly in configuration design? Your answerarrow_forwardYou have a 81.4% efficient pulley system arranged such that the effort pulls upward. Suppose that this system requires 139 N of effort pulling for 14.6 m, in order to lift the load up by 3.65 m. Answer tolerance of ±1 on the third signficant digit, unless noted otherwise. a) Determine the ideal mechanical advantage of this system. Must have absolute accuracy! Number b) Determine the actual methanical advantage of this system. Number c) Determine the number of fixed pulleys in this system. Must have absolute accuracy! Number d) Determine the weight of the load, in N. Numberarrow_forward
- 2) A device used in a ground radar system has age to failure that is described approximately by a Weibull distribution with mean life 83 h, shape parameter 1.5, and location parameter zero. When it fails it takes on average 3.5 h to repair: a) Calculate the reliability over a 25 h period, and the 'steady state' availability of the device. b) Calculate the reliability over 25 h, and the ‘steady state' availability of a subsystem that consists of two of these devices in active parallel redundancy.arrow_forwardGive a specific example of extinction consequence.arrow_forwardA stringer of tennis rackets has found that the actual string tension achieved for any individual racket will vary as much as 6 pounds per square inch from the desired tension set on the stringing machine. If the stringer wishes to string at a tension lower than that specified by a customer only 5% of the time, how much above or below the customer's specified tension should the string set the stringer machinearrow_forward
- The answer should be: Total Mech Adv ~ 6.3635; e.g., 30 x 6.3635 ~ 191 lbf outarrow_forwardPLEASE ANSWER QUICKLYarrow_forwardIn designing control systems, why testing is necessary? To arrive at the required system behaviour. To ensure that it meets the required performance criteria. To keep the controlled variables within the required limit. To come up with a good design.arrow_forward
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