Testing and Identification of Plastic Materials
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Testing and Identification of Plastic Materials Syllabus — Unit-wise Content
The official GTU curriculum for Testing and Identification of Plastic Materials (subject code 2162307) as prescribed for Plastic · Semester 6 divides the course into 10 units, covering 34 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (2162307)Unit 1 Introduction
- Basic concepts of testing-specifications and standards- purpose of specifications-basic specification format-ion and short term testing of plastics
Unit 2 Mechanical properties
- Introduction to stress-strain curves- understanding of terms like stress
- yield point
- yield strength
- proportional limit
- modulus of elasticity
- secant modulus
- etc. • Tensile tests with test specimen preparation and conditioning
- calculations of tensile strength
- modulus, and elongation
- factors affecting the test results. • Flexural tests with apparatus
- etc. • Compressive properties - creep tests like tensile and flexural creep
- creep curves and their study calculations of maximum fiber stress - interpretation and applications of creep data-isochronous stress -strain curves- stress relaxation-stress-time curves and application. • Impact tests like— Izod and Charpy
- factors affecting impact strength
- Dart Impact
- Tensile impact tests. • Shear strength and abrasion resistance tests in detail. • Fatigue resistance tests: flexural fatigue
- tensile fatigue
- factors affecting test results and applications. • Hardness tests: Rockwell hardness
- durometer hardness
- barcol hardness tests with factors affecting test results and limitations. • Creep-stress relaxation • Influence of temperature on modulus
- Burgess Model of creep
- Maxwell model of stress relaxation
Unit 3 Thermal properties
- Introduction-tests for elevated temp performance-short term tests like HDT, Vicat softening point- torsion pendulum test-long term tests like heat resistance test-all temp index-creep modulus/creep rupture tests-test variables and limitations of all tests with test procedure-specimen preparation, etc
- Thermal conductivity and thermal expansion test-coefficient of linear thermal expansion-brittleness temp. etc
Unit 4 Electrical properties
- Introduction-tests like dielectric strength- dielectric constant-dissipation factor-surface and volume resistance- arc resistance-test procedures with specimen preparation in detail
Unit 5 Weathering properties
- Introduction-accelerated weathering tests like exposure to carbon arc lamps-exposure to xenon arc lamps- exposure to fluorescent UV lamps-outdoor weathering of plastics
Unit 6 Optical properties
- Introduction to refractive index-light transmittance and haze-photo elastic properties-color-gloss-tests for each of these
Unit 7 Material characterization tests
- Melt index test in detail-capillary rheometers test with (1) melt viscosity v/s. shear rate curves (2) shear stress v/s. shear rate curves- viscosity tests in detail-GPC- thermal analysis tech .like DSC, TGA, TMA
Unit 8 Plastic identification
- concept of identification
- various tests for thermoplastics and thermosets- flame tests-solution test- density measurement-plastic film identification-selection of plastics-criteria and application
- design consideration etc
Unit 9 Flammability tests
- Incandescence resistance test-ignition properties-oxygen index test-surface burning characteristics-smoke generation tests
Unit 10 Chemical properties
- Immersion-stain resistance
- solvent stress cracking resistance and ESCR tests in detail
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