Discussion
Consider the following statements about the Paris law:
1. It relates crack growth per cycle to the stress intensity range.
2. Its exponent is typically between three and four for metals.
3. It applies across the whole range from threshold to fracture.
Which of the statements given above is or are correct?
Answer: B
Correct answer: 1 and 2 only
Statements 1 and 2 are correct: \( da/dN = C(\Delta K)^m \), with \( m \) typically three to four for metals. Statement 3 overstates its range. The law describes the straight middle portion of the growth curve only; near the threshold the growth falls away far more steeply, and near the toughness it accelerates far more sharply than the power law predicts.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development