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Lab Manuals for Strength Of Materials - SOM By ANNA SUPERKINGS

  • Strength Of Materials - SOM
  • Practical
  • Mechanical Engineering
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i CE 6315-STRENGTH OF MATERIALS LABORATORY Regulation-2013 LAB MANUAL (Fourth semester B.E. Mechanical Engineering students)

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ii CE6315 STRENGTH OF MATERIALS LABORATORY LTPC 0032 OBJECTIVES To supplement the theoretical knowledge gained in Mechanics of Solids with practical testing for determining the strength of materials under externally applied loads. This would enable the student to have a clear understanding of the design for strength and stiffness. LIST OF EXPERIMENTS 1. Tension test on a mild steel rod 2. Double shear test on Mild steel and Aluminium rods 3. Torsion test on mild steel rod 4. Impact test on metal specimen 5. Hardness test on metals - Brinnell and Rockwell Hardness Number 6. Deflection test on beams 7. Compression test on helical springs 8. Strain Measurement using Rosette strain gauge 9. Effect of hardening- Improvement in hardness and impact resistance of steels. 10. Tempering- Improvement Mechanical properties Comparison i) Unhardened specimen (ii) Quenched Specimen and (iii) Quenched and tempered specimen. 11. Microscopic Examination of (i) Hardened samples and (ii) Hardened and tempered samples. TOTAL: 45 PERIODS OUTCOMES: • Ability to perform different destructive testing • Ability to characteristic material LIST OF EQUIPMENT FOR BATCH OF 30 STUDENTS S.No. 1 2 3 4 5 6 7 8 NAME OF THE EQUIPMENT Universal Tensile Testing machine with double 1 shear attachment – 40 Ton Capacity Torsion Testing Machine (60 NM Capacity) Impact Testing Machine (300 J Capacity) Brinell Hardness Testing Machine Rockwell Hardness Testing Machine Spring Testing Machine for tensile and compressive loads (2500 N) Metallurgical Microscopes Muffle Furnace (800 C) Qty. 1 1 1 1 1 1 3 1

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iii INDEX st I Cycle Experiments: 1. Tension Test on mild steel rod. 2. Torsion test on mild steel rod. 3. Impact test on metal specimen 4. Compression test on helical springs 5. Hardness test on metals (a) Brinnell Hardness number (b) Rockwell Hardness number nd II Cycle Experiments: 6. 7. 8. 9. Deflection test on beams Double shear test on mild steel and aluminium rods Effect on Hardening- Improvement in Hardness and impact resistance of steels. Tempering- Improvement Mechanical properties comparison (a) Unhardened specimen (b) Quenched specimen (c) Quenched and tempered specimen 10. Microscopic Examination of (a) Hardened samples (b) Hardened and tempered samples. SRM Group VEC Dept. of Mechanical Engineering

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iv A LIST OF BASIC SAFETY RULES 1. When you handle chemicals wear eye protection (chemical splash goggles or full face shield). 2. When you work with furnaces for heat treatment procedures or other thermally activated equipment you should use special gloves to protect your hands. 3. Students should wear durable clothing that covers the arms, legs, torso and feet. (Note: sandals, shorts, tank tops etc. have no place in the lab. Students inappropriately dressed for lab, at the instructors discretion, be denied access) 4. To protect clothing from chemical damage or other dirt, wear a lab apron or lab coat. Long hair should be tied back to keep it from coming into contact with lab chemicals or flames. 5. In case of injury (cut, burn, fire etc.) notify the instructor immediately. 6. In case of a fire or imminently dangerous situation, notify everyone who may be affected immediately; be sure the lab instructor is also notified. 7. If chemicals splash into someone's eyes act quickly and get them into the eye wash station, do not wait for the instructor. 8. In case of a serious cut, stop blood flow using direct pressure using a clean towel, notify the lab instructor immediately. 9. Eating, drinking and smoking are prohibited in the laboratory at all times. 10. Never work in the laboratory without proper supervision by an instructor. 11. Never carry out unauthorized experiments. Come to the laboratory prepared. If you are unsure about what to do, please ask the instructor. 12. Always remember that HOT metal or ceramic pieces look exactly the same as COLD pieces are careful what you touch. 13. Know the location and operation of : Fire Alarm Boxes Exit Doors Telephones SRM Group VEC Dept. of Mechanical Engineering

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