What is the maximum force allowed in a riveted joint due to tearing of the plate?

P₁ = sₜ (p - d)t, where sₜ is the allowable tensile stress, p is the pitch, d is the diameter of the rivet hole, and t is the thickness of the plate.

Fill in the blanks: The efficiency of a single riveted joint is defined as the ratio between the maximum of P₁, P₂, and P₃ and the load carried by a ______.

Solid plate

True or False: Riveted joints can be disassembled without damaging the components.

False. Riveted joints are permanent joints that cannot be disassembled without damaging the components.

Riddle: I hold two pieces together, my head is round and my tail is not. What am I?

A rivet

What is the relationship between the diameter of the rivet hole (d) and the plate thickness (t) when t > 8 mm?

D = 6√t mm according to Unwin’s formula.

In a double riveted joint, the maximum allowable load is given by P₄ = sₜ(p - d)t + min {P₂, P₃}. What does sₜ represent?

Allowable tensile stress of the plate material.

Fill in the blanks: The design of rivet joints involves parameters such as diameter of the hole (d), pitch (p), and ______.

Margin (m)

True or False: The efficiency of welded joints is usually lower than that of riveted joints.

False. Welded joints can achieve an efficiency greater than 95%.

What type of welding involves applying mechanical force until materials deform to a plastic state?

Solid state welding

Riddle: I can join metals without a trace, my strength is often a hidden grace. What am I?

Welding

What is the primary cause of strength reduction in welded joints?

Crack initiation during cooling.

Fill in the blanks: In adhesive joints, the strength of the bond arises from the penetration of adhesive into the ______.

Adherend material

True or False: Adhesive joints are suitable for joining dissimilar materials.

True. Adhesive joints can effectively join metallic and non-metallic dissimilar materials.

What is the allowable shear stress in a weld, denoted by ss, used for in joint design?

To calculate the permissible load carried by a weld based on its throat area.

Fill in the blanks: The design of a scarf joint assumes that the shear stress is ______ at the adhesive-adherend interface.

Uniform