Engineering Measurementsquestion is imageonly part b) ? A vehicle shaft is tested for its fatigue life using a fatigue test machine. In this test machine, parts are loaded using the pre-determinedtest stress, then unloaded an opposite load. This cycle of loading and unloading is then repeated until a failure is observed and followingdata is obtained:Sample #134Cycles to Failure119127131128101(104 Cycles)Answer the following questions (Use 90 % confidence)a)Find out the population mean and uncertainty.b)The uncertainty has been found as too high for a car manufacturer and asks for amendment in the design of the shaft. Therefore,OEM supplier have decided to performed more tests before doing new design and manufacture. How many tests should be done inorder to reduce the uncertainty level from what you have found in part (a) to ± 5.1 104 Cycles.c)OEM supplier have used Finite Element Methods to design the part from the beginning. They have produced four samples and thefatigue test results are given below. Find out that if there is a difference between the two designs or not.New Sample #1234Cycles to Failure185158115152(104 Cycles) A vehicle shaft is tested for its fatigue life using a fatigue test machine. In this test machine, parts are loaded using the pre-determinedtest stress, then unloaded an opposite load. This cycle of loading and unloading is then repeated until a failure is observed and followingdata is obtained:Sample #134Cycles to Failure119127131128101(104 Cycles)Answer the following questions (Use 90 % confidence)a)Find out the population mean and uncertainty.b)The uncertainty has been found as too high for a car manufacturer and asks for amendment in the design of the shaft. Therefore,OEM supplier have decided to performed more tests before doing new design and manufacture. How many tests should be done inorder to reduce the uncertainty level from what you have found in part (a) to ± 5.1 104 Cycles.

Solution (b) The required uncertainty = 5.1

b) The uncertainty has been found as too high for a car manufacturer and asks for amendment in the design of the shaft. Therefore, OEM supplier have decided to performed more tests before doing new design and manufacture. How many tests should be done in order to reduce the uncertainty level from what you have found in part (a) to + 5.1 104 Cycles.

b) The uncertainty has been found as too high for a car manufacturer and asks for amendment in the design of the shaft. Therefore, OEM supplier have decided to performed more tests before doing new design and manufacture. How many tests should be done in order to reduce the uncertainty level from what you have found in part (a) to + 5.1 104 Cycles.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.30P: Reconsider Problem 3.29. If Va,VbandVc are a negative-sequence set, how would the voltage and...

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