Uses of bath tub curve

Q.  What is /are the major purpose/s of using a bath tub curve?
- Published on 25 Sep 15

a. To determine the capital maintenance in defense equipments
b. To compute lifts in the distillation column
c. To decide the maintenance of equipment
d. All of the above

ANSWER: All of the above
 

    Discussion

  • Satyawati Patil   -Posted on 07 Oct 15
    Generally, failure is divided into different modes such as early failure, catastrophic failure and wear-out failure, on the basis of its nature. The curve which depicts the modes of behaviour is known as 'Bath-tub Curve'. It is said to be a bath-tub curve because the shape of curve resembles to the shape of bath-tub.

    It is usually plotted for two operating stresses. However, maximum level of operating stress yield higher level of failure rate.

    In maintainability, the downtime and the failure rate are related to each other. Therefore,bath-tub curve plays a vital role in deciding the maintenance of equipment i.e. preventive, breakdown or capital maintenance. This is so because the existence of different failure modes in a bath-tub curve specifies the desired level of maintenance.

    Besides these, it is also applicable in determining the lifts in distillation column and the capital maintenance especially in defence equipments.

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