Consider the following statements regarding typical analysis of bolt failure : 

1. 15% failure of bolt occur at the fillet under the head.

2. 50% failure of bolt occur at the end of threads on the shank.

3. 80% failure of bolt occur in the threads that are in contact with the nut.

Which of the above statements is/are correct ?

This question was previously asked in
ESE Mechanical 2021 Official Paper
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  1. 1 only
  2. 3 only
  3. 2 and 3 only
  4. 1, 2 and 3

Answer (Detailed Solution Below)

Option 1 : 1 only
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ST 1: UPSC ESE (IES) Civil - Building Materials
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Detailed Solution

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Explanation:

Bolt Failure Analysis: In this bolts are tested in different conditions and loadings and results are recorded for better understanding of failure.

According to bolt failure analysis:

  • 15% failures occur at the fillet under the head
  • 20% failures occur at the end of threads on the shank.
  • 65% failures occur in the threads that are in contact with the nut
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