Exam Details
| Subject | Composite Materials | |
| Paper | ||
| Exam / Course | B.Tech in Aerospace Engineering (BTAE) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2016 | |
| City, State | new delhi, |
Question Paper
State three ways to improve the impact strength of plastics.
Describe the mechanism of adhesion for polymers that are used as adhesives.
What are the most commonly used matrices for thermosetting composites?
What makes ceramics different from other engineering materials like metals, alloys and plastics
What do you mean by 'Composite materials' What are the general properties of polymeric materials
Explain briefly the polymerization mechanism.
State the characteristics of long chain polymers. Describe briefly the deformation behaviour of plastics.
Define monomer and polymer. What do you mean by thermo-mechanical properties Explain with the help of suitable examples.
State some important Non-Destructive Testing methods and their fields of application. Also explain their limitations.
Describe in brief the ultrasonic inspection technique.
Explain the factors affecting the solubility and resistance of polymeric materials.
Why are plasticizers added to polymers? Explain.
Distinguish between structure and properties of thermosetting and thermoplastic resins.
Describe the injection moulding process for plastics. How is it different from other thermoplastic forming techniques?
8. A composite material is stressed under isostrain condition. The composite consists of a continuous glass fiber reinforced epoxy resin produced by using 65 percent by volume of E-glass fibers having a modulus of elasticity of Ef= 75 GPa, a tensile strength of 2500 MPa, and a hardened epoxy resin with a modulus of elasticity of Em GPa, and a tensile strength of 65 MPa. Calculate
the modulus of elasticity of the composite material,
the tensile strength of the composite,
the fraction of the load carried by the fiber.
What are the functions and applications of laminated glass?
A unidirectional Kevlar-49 fiber epoxy composite contains 65 percent by volume of Kevlar-49 and 35 percent epoxy resin. The density of the Kevlar-49 fiber is 1·48 mg/m^3 and that of the epoxy resin is 1·20 mg/m^3.
What are the weight percentages of Kevlar-49 and epoxy resin in the composite materials?
What is the average density of the composite material?
10.(a) Describe in brief the constituents of glass. Also list the properties of glass.
Determine the Young's modulus of a composite containing 62% (by volume) of glass fibre (Ef 72 in a matrix of epoxy resin (Em 3.5 under isostress condition.
Describe the mechanism of adhesion for polymers that are used as adhesives.
What are the most commonly used matrices for thermosetting composites?
What makes ceramics different from other engineering materials like metals, alloys and plastics
What do you mean by 'Composite materials' What are the general properties of polymeric materials
Explain briefly the polymerization mechanism.
State the characteristics of long chain polymers. Describe briefly the deformation behaviour of plastics.
Define monomer and polymer. What do you mean by thermo-mechanical properties Explain with the help of suitable examples.
State some important Non-Destructive Testing methods and their fields of application. Also explain their limitations.
Describe in brief the ultrasonic inspection technique.
Explain the factors affecting the solubility and resistance of polymeric materials.
Why are plasticizers added to polymers? Explain.
Distinguish between structure and properties of thermosetting and thermoplastic resins.
Describe the injection moulding process for plastics. How is it different from other thermoplastic forming techniques?
8. A composite material is stressed under isostrain condition. The composite consists of a continuous glass fiber reinforced epoxy resin produced by using 65 percent by volume of E-glass fibers having a modulus of elasticity of Ef= 75 GPa, a tensile strength of 2500 MPa, and a hardened epoxy resin with a modulus of elasticity of Em GPa, and a tensile strength of 65 MPa. Calculate
the modulus of elasticity of the composite material,
the tensile strength of the composite,
the fraction of the load carried by the fiber.
What are the functions and applications of laminated glass?
A unidirectional Kevlar-49 fiber epoxy composite contains 65 percent by volume of Kevlar-49 and 35 percent epoxy resin. The density of the Kevlar-49 fiber is 1·48 mg/m^3 and that of the epoxy resin is 1·20 mg/m^3.
What are the weight percentages of Kevlar-49 and epoxy resin in the composite materials?
What is the average density of the composite material?
10.(a) Describe in brief the constituents of glass. Also list the properties of glass.
Determine the Young's modulus of a composite containing 62% (by volume) of glass fibre (Ef 72 in a matrix of epoxy resin (Em 3.5 under isostress condition.
Other Question Papers
Departments
- Centre for Corporate Education, Training & Consultancy (CCETC)
- Centre for Corporate Education, Training & Consultancy (CCETC)
- National Centre for Disability Studies (NCDS)
- School of Agriculture (SOA)
- School of Computer and Information Sciences (SOCIS)
- School of Continuing Education (SOCE)
- School of Education (SOE)
- School of Engineering & Technology (SOET)
- School of Extension and Development Studies (SOEDS)
- School of Foreign Languages (SOFL)
- School of Gender Development Studies(SOGDS)
- School of Health Science (SOHS)
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- School of Performing Arts and Visual Arts(SOPVA)
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- School of Translation Studies and Training (SOTST)
- School of Vocational Education and Training (SOVET)
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Subjects
- Aerodynamics- I
- Aerodynamics- II
- Aircraft Design/Launch Vehicle/ Rocket Design
- Aircraft Instruments
- Aircraft Safety and Maintenance Engineering
- Aircraft Structures
- Aircraft Systems And Airworthiness Requirements
- Applied Chemistry
- Applied Physics
- Basic Control Theory
- CNS-ATM system
- Composite Materials
- Computer Fundamentals
- Engineering Drawing
- Environmental Science
- Flight Mechanics
- High Speed Aerodynamics
- Instruction To Computer Play Device
- Introduction to Aeronautics
- Introduction To Rocket And Missiles
- Mechanics Design
- Propulsion- I
- Propulsion- II
- Rocket Propulsion
- Space Dynamics
- Strength of Materials
- Technical Writing and Communication Skills
- Workshop Technology