Stress-strain diagrams are formed from axial tension, shear loading conditions and compression. Tension specimens generally have a small region in the middle which is called as ‘gage length’. Compression samples are thicker and shorter than tension samples with no cross-sectional differences. We can calculate normal stress by dividing the applied force by the cross-sectional area of the specimen. The normal strain is calculated by dividing the change in gage length by its original value number.
There are many Stress-strain diagrams for engineering materials notes for GATE pdfs and Stress-strain diagrams for engineering materials study material for GATE ME online that you can refer to for stress-strain diagrams. Questions on Stress-strain diagrams are usually asked in the GATE and other engineering entrance exams.
Important Topics in Stress-Strain Diagrams for GATE ME
Proportional Limit (Hooke’'s Law)
The origin, which is referred to as O, is called a proportional limit. In 1678, Robert Hooke noticed that the stress-strain curve is a straight line, and since then, it is called Hooke’'s Law, which states that stress is directly proportional to strain. It is also denoted as:
σ∝εσ∝ε or σ=kεσ=kε
k is the constant proportional limit known as modulus of elasticity E or popularly as Young's Modulus. The slope of the stress-strain diagram is equal to Young’s Modulus. Hence:
You will find online many stress-strain diagrams for engineering materials GATE questions and answers pdfs, stress-strain diagrams for engineering materials MCQ questions regarding Hooke’s Law and its application online.
It is a limit beyond which any material will no longer revert to its original shape after the load is reduced or removed. In other words, the maximum stress is created so that there is no scope for deformation when the load is completely removed.
Modulus of Toughness
The work is applied in a unit volume of a material when the force is increased from O to R.
It is calculated by seeing the area under the stress-strain curve.
There are many stress-strain diagrams for engineering materials notes for ME and stress-strain diagrams for engineering materials MCQ pdfs that you can refer to exploring elastic limit lab experiments and study material.
Tips to Prepare for Stress-Strain Diagrams for Engineering Materials for GATE
- Draw various stress-strain diagrams, including those from your lab experiments to understand these diagrams’ practical application.
- Refer to previous year's stress-strain diagrams for engineering materials GATE ME questions to understand the type of questions asked in the GATE exams.
- Practice numerical questions regarding stress and strain diagrams to enhance your understanding of the concepts.
- Solve questions related to elasticity to understand the concept of stress and strain.
Importance of Stress-Strain Diagrams for Engineering Materials in GATE ME
- The stress-strain diagrams for the engineering materials syllabus for GATE is designed to test the students’ theoretical and practical knowledge about stress, elasticity, Young’s modulus, etc.
- Stress-strain diagrams for engineering materials GATE syllabus help train the students in understanding the real-life applications of Young's Modulus in various important fields of importance like architecture and, mechanical engineering, among many others and much more.
- The lab experiments help students build drive their intelligence towards creating building an accurate stress-strain curve and realize which types of curves are ideal ones.
- Stress-strain diagrams for engineering materials GATE notes help students calculate load and elastic limits of different materials like rubber, iron, etc.
Most Recommended Books for Stress-Strain Diagrams for Engineering Materials for GATE
This topic comes under engineering materials for the GATE exams. Some of the stress-strain diagrams for engineering materials books you can refer to are listed below.:
Atlas of Stress-Strain Curves
Howard E Boyer
Column Curves and Stress-Strain Diagrams
William R Osgood
Why prepare Stress-Strain Diagrams for Engineering Materials from Gradeup?
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Frequently Asked Questions
Q. How many questions of stress-strain diagrams for engineering materials are dedicated to GATE?
There are two questions asked on the topic on average in previous GATE papers.
Q. What are the average marks for the topic of stress-strain diagrams for engineering materials in GATE?
The average marks for this topic are 1.50.
Q. In which competitive exams do stress-strain diagram questions appear?
Stress-strain diagram questions appear in competitive exams like GATE, IIT- – JEE, and other engineering exams. There are many stress-strain diagrams for engineering materials online quizzes available that include sample questions from these competitive exams you can test your knowledge and understanding of the topic through these quizzes.
Q. What is the use of a stress-strain diagram?
It is used to determine the relationship between the stress and strain aspects of materials.
Q. What is the symbol for strain?
ε is the symbol for strain.