Strength of Materials detail DTE Kar Diploma syllabus for Tool And Die Making (TD), C15 scheme is extracted from DTE Karnataka official website and presented for diploma students. The course code (15TD32T), and for exam duration, Teaching Hr/week, Practical Hr/week, Total Marks, internal marks, theory marks, duration and credits do visit complete sem subjects post given below. The syllabus PDFs can be downloaded from official website.
For all other tool and die 3rd sem syllabus for diploma c15 scheme dte karnataka you can visit Tool and Die 3rd Sem Syllabus for Diploma C15 Scheme DTE Karnataka Subjects. The detail syllabus for strength of materials is as follows.
Pre-requisites:
Knowledge of Basic Mathematics and Applied Science.
Course Objectives:
To enable the student to understand, analyze & design under various types of loads, stresses & strains, failure of machine parts and column and struts relevant to punch and die in Tool and Die Making process, knowledge of mechanical properties of materials which will help in the selection of suitable materials for various Tool and Die making applications.
Course Outcomes:
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UNIT I: SIMPLE STRESSES AND STRAINS 12 Hrs
Introduction Simple stresses & strains viz. tensile, compressive, Shear, Crushing, Thermal stresses, & corresponding strains, Hook’s Law -Problems on Direct Stress & Linear StrainStress- Strain curve for Ductile material and Brittle material with all parameters.- factor of Safety. Elastic Constants – Lateral Strain,Poisson’s ratio, Bulk Modulus, Shear Modulus, Volumetric Strain-Relation between elastic constants- Problems on elastic constants. Hoop stress-Longitudinal Stress in thin cylindrical shells.
UNIT II: CENTRE OF GRAVITY & MOMENT OF INERTIA 07Hrs
Definition of Centre of Gravity for different shapes. CG & MI and its Importance. Parallel & Perpendicular Axis Theorem. C.G & MI of Rectangle, Triangle, Circle, Semi-circle, Trapezium, T-Section, I-Section, L-Section, Channel-Section. Moment of Inertia of solid & Hollow sections like Rectangle, Circle about XX & YY axis.
UNIT III: SHEAR FORCE AND BENDING MOMENT AND THEORY OF SIMPLE BENDING 10Hrs
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UNIT IV: STRAIN ENERGY AND SPRINGS 05Hrs
Introduction -Strain Energy-Types of loading-Sudden, Gradual & Impact Load-resilience, proof resilience and modulus of resilience-Equation for strain energy stored in a body when the load is gradually applied and suddenly applied – Simple problems.
Springs, Types of Springs, Stiffness of springs, Helical Springs, Close and Open Coil, Deflection of Springs due to Torsional stress- Simple Problems.
UNIT V: TORSION OF CIRCULAR SHAFT 08Hrs
Introduction to Torsion , Angle of Twist , Polar Moment of Inertia , Torsion equation-(without proof)-Assumptions in theory of Torsion -Power Transmitted by Solid and Hollow shaft, Pure Torsion – Comparison between Solid and Hollow Shafts subjected to pure torsion- Simple Problems.
UNIT VI: COLUMN AND STRUTS 10Hrs
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Text Books:
- Ramamurtham. S., “Strength of Materials”, 14th Edition, Dhanpat Rai Publications, 2011
- Khurmi R S, “Applied Mechanics and Strength of Materials”, 5 Edition, S.Chandand company
Reference Books:
- Popov E.P, “Engineering Mechanics of Solids”, 2nd Edition, Prentice-Hall of India, New Delhi, 2002.
- Nash W.A, “Theory and problems in Strength of Materials”, Schaum Outline Series, McGraw-Hill Book Co., New York, 1995.
- Kazimi S.M.A, “Solid Mechanics”, Tata McGraw-Hill Publishing Co., New Delhi, 2003.
- Ryder G.H, “Strength of Materials”, 3rd Edition, Macmillan India Limited, 2002.
- Bansal R. K, “Strength of Materials”, Laxmi Publications, New Delhi, 2012.
- Timoshenko S.P, “Elements of Strength of Materials”, Tata McGraw-Hill, Delhi,
LIST OF SOFTWARE/LEARNING WEBSITES
- www.nptel.iitm.ac.in/courses/../IIT../lecture%2023%20and%2024htm
- www.wikipedia.org/wiki/Shear and moment diagram
- www.freestudy.co.uk/mech%20prin%20h2/stress.pdf
- www.engineerstudent.co.uk/stress and strain.html
- https://www.iit.edu/arc/workshops/pdfs/Moment_Inertia.pdf
- https://www.youtube.com/watch?v=Wg_-XhQy5gs
SUGGESTED LIST OF STUDENT ACTIVITYS
Note: The following activities or similar activities for assessing CIE (IA) for 5 mark (Any one).
- Each student should do any one of the following type activity or any other similar activity related to the course and before conduction, get it approved from concerned Teacher and HOD.
- Each student should conduct different activity and no repeating should occur
- Calculate Moment of Inertia of Fly Wheel of press present in your laboratory
- Prepare a chart displaying the mechanical properties of the materials use for punch and die.
- Compare the strength of solid shaft with that of hallow shaft for same power transmission for an automobile and make report
- Prepare report of Helical Springs used in Industry giving their specification.
- Study of failure of punches ( piercing) used in Tool and Die making focusing on load conditions only.
Course Delivery:
- The course will be delivered through lectures and Power point presentations/ Video.
Note to IA verifier:
The following documents to be verified by CIE verifier at the end of semester
- Blue books( 20 marks)
- Student suggested activities report for 5 marks and should be assessed
- Student feedback on course regarding Effectiveness of Delivery of instructions & Assessment Methods.
Model Question Paper:
(CIE)
- Define Hook laws for ductile materials and show with graph. 5 MARKS
- Explain Hoop’s stress and longitudinal stress in thin cylindrical shells 5 MARKS
- A punch with a diameter 20mm is used to punch a hole in an aluminium plate of thickness 4mm .If the ultimate shear stress for the aluminium is 275MPa, what force P is required to punch through the plate. OR An I section consists of top flange 100 X 30 mm, bottom flange 200 X 40 mm and web 180 X 20 mm. Find the M.I. about an axis passing through C.G. parallel to the base. 10 MARKS
Model Question Paper:
(SEE)
PART-A(Each questions carries 5 marks)
- Define bulk Modulus and Shear Modulus
- Explain thermal stress and Shear Modulus
- State Parallel and perpendicular axis theorem
- Locate CG for Triangle Rectangle, Circle, Semi-circle, Trapezium, Cone with the help of plain figure
- Define Shear force and Bending Moment in beams
- Define column and strut giving example.
- List the aassumptions in theory of simple bending
- Define neutral axis and central axis.
- Explain Strain energy and Resilience
PART-B(Each questions carries 10 marks)
- A steel rod 30mm x 12.5mm and 500mm long is subjected to a axial pull of 75KN. Determine the changes in length, width and thickness and volume of bar. If young’s modulus is 200KN/mm2.
- A bar of 30mm diameter is subjected to an axial pull of 80KN. The measured extension is 0.1 mm on a gauge length of 200mm and the change in diameter is 0.004mm. calculate the poisson’s ratio and the values of young’s Modulus, bulk modulus and Modulus of rigidity.
- An I section consists of top flange 100 X 30 mm, bottom flange 200 X 40 mm and web 180 X 20 mm. Find the M.I. about an axis passing through C.G. parallel to the base.
- Calculate M.I. of an angle section 100 X 80 X 10 mm about an axis passing through the centroid and parallel to shorter leg.
- Draw S.F. and B.M. diagrams for a cantilever beam of span 1.5m carrying point loads,1.5kN at free end and 2kN at 0.5m from free end.
- Compare the ratio of strength of solid steel column to that of hollow of same cross sectional area.The internal diameter of hollow column is 3/4th of external diameter. Both the columns have the same length and are pinned at both ends.
- A steel rod of 5m long and 40mm in diameter is used as column with one end fixed and other end free. Determine the crippling load by Eulers formula.Take E=2X105 N/mm2.
- A simply supported wooden beam of span 1.3 m is carrying a central point load of 40 KN If the allowable bending stress in the timber is taken as 8 N/mm2, find the breadth and depth of the timber. Take b=0.6d.
- List the assumptions made in theory of Torsion -5M
- An axial pull of 25KN is suddenly applied on a steel rod of 3 m long and 900mm2 in
- A solid circular shaft is required to transmit 80KW at 160 rpm. The permissible shear stress in the shaft is 60 N/mm2.The maximum Torque transmitted exceeds the mean torque by 20% more than mean torque. The angle of twist is not to exceed 10 in a length of 20 times the diameter of the shaft. The valve of rigidity modulus is 0.8×105 N/mm2
For detail syllabus of all other subjects of BE Tool And Die, C15 scheme do visit Tool And Die 3rd Sem syllabus for C15 scheme.
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