Mechanical Engineering Exam > Mechanical Engineering Questions > Brittle fracture is more dangerous than ducti...
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Brittle fracture is more dangerous than ductile fracture because
- a)no warning sign
- b)crack propagates at very high speed
- c)no need for extra stress during crack propagation
- d)all of these
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Brittle fracture is more dangerous than ductile fracture becausea)no w...
Brittle fracture is more dangerous than ductile fracture because of several reasons. Let's discuss each reason in detail.
No warning sign:
- Brittle materials do not show any warning signs before fracturing, unlike ductile materials.
- Ductile materials undergo plastic deformation before fracturing, which gives a warning sign to prevent catastrophic failure.
- Brittle fracture can occur suddenly without any warning sign, making it more dangerous.
Crack propagates at a very high speed:
- In brittle materials, the crack propagates at a very high speed once it starts.
- Due to the absence of warning signs, there is no time to detect and control the crack propagation.
- The high-speed crack propagation can cause catastrophic failure in a very short time.
No need for extra stress during crack propagation:
- Brittle fracture can occur even at a low level of stress, which makes it more dangerous.
- In ductile fracture, the crack propagation requires extra stress to continue, which can be controlled to prevent catastrophic failure.
All of these:
- All the above reasons make brittle fracture more dangerous than ductile fracture.
- The absence of warning signs, high-speed crack propagation, and no need for extra stress during crack propagation can cause catastrophic failure in a very short time.
Therefore, it is important to understand the differences between brittle and ductile fracture and take appropriate precautions to prevent catastrophic failure in brittle materials.
No warning sign:
- Brittle materials do not show any warning signs before fracturing, unlike ductile materials.
- Ductile materials undergo plastic deformation before fracturing, which gives a warning sign to prevent catastrophic failure.
- Brittle fracture can occur suddenly without any warning sign, making it more dangerous.
Crack propagates at a very high speed:
- In brittle materials, the crack propagates at a very high speed once it starts.
- Due to the absence of warning signs, there is no time to detect and control the crack propagation.
- The high-speed crack propagation can cause catastrophic failure in a very short time.
No need for extra stress during crack propagation:
- Brittle fracture can occur even at a low level of stress, which makes it more dangerous.
- In ductile fracture, the crack propagation requires extra stress to continue, which can be controlled to prevent catastrophic failure.
All of these:
- All the above reasons make brittle fracture more dangerous than ductile fracture.
- The absence of warning signs, high-speed crack propagation, and no need for extra stress during crack propagation can cause catastrophic failure in a very short time.
Therefore, it is important to understand the differences between brittle and ductile fracture and take appropriate precautions to prevent catastrophic failure in brittle materials.
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Brittle fracture is more dangerous than ductile fracture becausea)no w...
Option D is the correct answer because it breaks without warning at ultimate point due to high crack propagation speed
crack propagation speed is high in brittle material than ductile material due to higher stress concenntration effect
crack propagation speed is high in brittle material than ductile material due to higher stress concenntration effect
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Brittle fracture is more dangerous than ductile fracture becausea)no warning signb)crack propagates at very high speedc)no need for extra stress during crack propagationd)all of theseCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Brittle fracture is more dangerous than ductile fracture becausea)no warning signb)crack propagates at very high speedc)no need for extra stress during crack propagationd)all of theseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Brittle fracture is more dangerous than ductile fracture becausea)no warning signb)crack propagates at very high speedc)no need for extra stress during crack propagationd)all of theseCorrect answer is option 'D'. Can you explain this answer?.
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