Welded and Riveted Joints topics include: Various concepts which include welded joints, butt joints, fillet joints, riveted joints, various joints terminology and lap joints based on eccentricity principle. Welded and riveted joints are both ways to join pieces together. Welded joints: A permanent method that uses heat to fuse metal pieces together. Welded joints are stronger and more rigid than riveted joints, and produce a smooth finish. Welded joints are also stronger and more rigid than riveted joints, but can fail due to strong vibrations.  Here are some more differences between... Show more

Welded and Riveted Joints topics include: Various concepts which include welded joints, butt joints, fillet joints, riveted joints, various joints terminology and lap joints based on eccentricity principle.

Welded and riveted joints are both ways to join pieces together.
Welded joints: A permanent method that uses heat to fuse metal pieces together. Welded joints are stronger and more rigid than riveted joints, and produce a smooth finish. Welded joints are also stronger and more rigid than riveted joints, but can fail due to strong vibrations. 

Here are some more differences between welded and riveted joints:
Semi-permanence: Riveted joints are semi-permanent, meaning they can be cut and removed.
Seams: Welding creates seamless joins, whereas riveting leaves visible seams.
Inspection: Riveted joints can be visually inspected to ensure the components are secure, while welded joints must be tested with a machine or device.
Weight: Riveted joints add rivets to the assembly, which increases the weight.
Startup cost: Riveting often has a lower startup cost and can be economical for smaller projects or one-off tasks.
Applications: Welding has a wide range of applications, including joining thin plates in automobile industries and pipes in refineries. Riveted joints are used to fasten sheet metal and form rolled metal, and are typically used in pressure vessels, gas cylinders, and boilers. 

Related Test: Welding Practice Test: Welding and Related Processes

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Machine Design Practice Test: Welded and Riveted Joints

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25 Questions

1. Failure in rivet occurs by which mode?

CompressionEach of the mentionedShearTensile

2. Strength of parallel fillet weld is greater than strength of transverse fillet weld.

FalseDon't KnowTrueMaybe

3. Calculate the effective force in vector form to which rivet 2 is subjected. Bolts are separated by 100mm and force P=30kN.

-7500j-3600i7500j+3600i7500j-3600iNone of the listed

4. Parallel fillet weld and transverse fillet weld both have the plane in which maximum shear stress occurs at 45’ to the leg dimension.

FalseDon't KnowMaybeTrue

5. The following welded joint is an example of

Axial load in plane perpendicular to plane of weldsNone of theseEccentric Load in plane of weldsAxial load in plane of welds

6. While calculating bending stress in the following welded joints which of the welds moment of inertia can be neglected?

Both 1 & 3None of the listedBoth 2 & 41

7. Forge welding involves heating of parts to elastic stage and joint is prepared by impact force.

No, it is done up to plastic stageNone of the listedHeating is done up to boiling pointYes

8. Which of the following rivet head consist of frustum of cone attached to the shank?

Pan head rivetCountersunk head rivetCone head rivetFlat head rivet

9. Two plates are joined by double strap butt joints with rivets arrangement as shown in the figure. Width of the plate is 300mm and diameter of rivets 30mm. The thickness of the plates can be taken as 20mm. Allowable stress in tension, shear and compression are 80 N/mm²,60 N/mm² and 160N/mm². Calculate the crushing resistance of 1 rivet.

576kN108kN96kN1153kN

10. In gas welding which of the following is generally used?

Oxygen-HydrogenOxygen-AcetyleneNone of theseOxygen-Hydrogen or Oxygen-Acetylene

11. Among gas and electric arc welding, which has the higher rate of heating?

Gas welding and electric arc welding have equal rate of heatingElectric arc weldingGas weldingCannot be determined

12. Riveting is not recommended for aluminium alloys.

Don't KnowFalseTrueMaybe

13. Find the bending stress in the top weld is if thickness of weld is t. Given P=15kN and e=120mm.

230/t360/tNone of the listed200/t

14. Two plates are joined by double strap butt joints with rivets arrangement as shown in the figure. Width of the plate is 300mm and diameter of rivets 30mm. The thickness of the plates can be taken as 20mm. Allowable stress in tension, shear and compression are 80 N/mm²,60 N/mm² and 160N/mm². Calculate the pitch of the rivets.

105mm210mmNone of the listed52.5mm

15. Which of the following are used in light sheet metal work?

Button head rivetsEach of the mentionedTinmen’s rivetsSnap head rivets

16. Calculate the direct shear stress in the welds by ignoring torsional shear stress if P=8kN and thickness of weld is 5mm.

12.33N/mm14.33N/mmNone of the listed13.33N/mm

17. With reference to the following figure, a plate, 75mm wide and 10mm thick, is joined with another plate as shown. The permissible tensile and shear stress in the welds are 50/mm² and 40N/mm². Determine the required length of each parallel fillet weld if length of transverse weld is 40mm.

8mm9mm7mm11mm

18. Find the length of weld 2 required to with stand the load of 100kN. Permissible shear stress in weld is 70kN/mm².

70.16mmNone of the listed102.22mm132.4mm

19. Can we use rivets of the same materials as the parts to be joined?

FalseTrueDon't KnowMaybe

20. Are the bolts 2 and 3 subjected to same magnitude of force?

Don't knowFalseMaybeTrue

21. The capacity of welded structures to damp vibrations is quite good.

MaybeDon't KnowTrueFalse

22. Find the thickness of the weld is if allowable shear stress in the welds is 70N/mm². Given P=15kN and e=120mm.

3.35mm4mm4.73mmNone of the listed

23. In hand riveting die is a part of hammer.

Don't KnowMaybeFalseTrue

24. Among punching and drilling, punching is safer.

Don't KnowFalseTrueMaybe

25. In joining steel plate and asbestos, welding is preferred over riveting.

FalseTrueMaybeDon't Know