Q5. As shown in the diagram, a bracket is mounted to a rigid structure using four bolts that are arranged in a square with center to center distance of 22mm. A load whose x,y,z components as shown in the diagram is applied. Take mass "m" as 180kg. Find out the tensile and shear loads acting on the bolts
Size the bolts such that the bolts are reusable (pretension at 75% of proof load). Use Metric 8.8 grade bolts for this purpose. Use metric standard charts published online for and mention your source. A factor of safety of 2 should be there in both tension and
shear. Assume the same size bolts are used. • Support your solutions with relevant free body diagrams. Note: If you feel any information is not available, take reasonable assumptions
Answers
Explanation:
Total No of Questions: [10] SEAT NO. :
[ 4758 ] - 526 [Total No. of Pages : 2]
T.E. Mechanical (Sandwich) - 2012 Course
Materials and Manufacturing Engineering [302066]
Time: 3 Hours Max. Marks : 100
Instructions to the candidates:
1) Solve Q1 or 2, Q3 or 4, Q5 or 6, Q7 or 8, Q9 or 10, Q11 or 12.
2) Neat diagrams must be drawn wherever necessary.
3) Figures to the right side indicate full marks.
4) Use of Calculator, heat transfer data book, steam table is allowed.
5) Assume Suitable data if necessary
SECTION - I
Q1) a State Classification & characteristics of polymers and Types ofpolymerization. 8
b What is Metal matrix composite, Ceramic matrix composite? 8
Q2) a State processing and applications of ceramic materials - WC, TIC, Al2O3. 8
b What is Fiber Reinforced plastic? State its properties and engineering
applications.
8
Q3) a. What are Ceramicand Polymeric implant materials? Explain. 8
b. What is Soft & Hard Ferrites? State principle of Piezo electric and ferro electric
materials andtheir applications
8
Q4) a. State concepts of Nano science and use of technology. State technological
advantages of Nano materials.
8
b. What is Shape memory alloys? State its properties with examples. 8
Q5) a State classification of corrosion. 9
b How corrosion can be prevented by improvement in design. 9
Q6) a Explain : Internal & External coating, Cathodic& Anodic protection. 9
b Describe Impingement, and Cavitation corrosion. 9