Question:
Earing is common defect in:
Earing is common defect in:
Show Hint
Earing occurs due to anisotropy in sheet metal during deep drawing — leading to uneven height at the rim of the formed part.
Updated On: Jun 20, 2025
- Deep drawing
- Rolling
- Extrusion
- Forging
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Earing is a type of defect characterized by the formation of wavy projections — called "ears" — on the rim of a drawn cup.
It is most commonly observed in the deep drawing process, where a flat metal sheet is drawn into a forming die to produce cup-like structures.
This defect is primarily caused due to:
- Anisotropy in the sheet metal
- Variation in yield strength in different directions (rolling vs transverse)
These variations lead to non-uniform flow during drawing, causing certain regions to rise higher (form ears) and others lower.
Other forming operations like rolling, forging, and extrusion do not typically produce this type of edge deformation.
It is most commonly observed in the deep drawing process, where a flat metal sheet is drawn into a forming die to produce cup-like structures.
This defect is primarily caused due to:
- Anisotropy in the sheet metal
- Variation in yield strength in different directions (rolling vs transverse)
These variations lead to non-uniform flow during drawing, causing certain regions to rise higher (form ears) and others lower.
Other forming operations like rolling, forging, and extrusion do not typically produce this type of edge deformation.
Was this answer helpful?
0
0
Top Questions on Metallurgy
- In LD process, silicon removal takes place before carbon removal since:
Match the following processes with their physical principles:
- Back Scattered electrons are used in:
- Which of the following is a common defect in wire drawing processes, particularly when excessive friction is present at the die-workpiece interface?
- What is the relationship between the frequency of the sound waves and the ability to detect smaller defects in Ultrasonic testing?
View More Questions
Questions Asked in AP PGECET exam
- If \( A \) and \( B \) are two mutually exclusive events with \( P(B) \ne 1 \), then the conditional probability \[ P(A \mid \overline{B}) = \,? \] where \( \overline{B} \) is the complement of \( B \)
- AP PGECET - 2025
- Probability and Statistics
- If \( X \) is a continuous random variable with the probability density function
\[ f(x) = \begin{cases} cx^3, & 0 \le x \le 2 \\ 0, & \text{otherwise} \end{cases} \] then \( P\left( \frac{1}{2} < X < \frac{3}{2} \right) \) is ..........- AP PGECET - 2025
- Probability and Statistics
- The line integral of the vector field \( \vec{F} = x\hat{i} - 2y\hat{j} + z\hat{k} \) along the straight line path from the point \((-1,2,3)\) to \((2,3,5)\), is ..........
- AP PGECET - 2025
- Calculus
- The Laplace transform of \( e^{-2t} \cos(\sqrt{2} t) \) is .......
- AP PGECET - 2025
- Laplace transforms
- Consider the improper integral \( I = \int_{2025}^{2030} \frac{1}{(x - 2025)^k} \, dx \), where \( k > 0 \). Which of the following is true for \( I \)?
- AP PGECET - 2025
- Calculus
View More Questions