6/11 Causes and prevention of material failure ​

What is one of the objectives of the T Level Technical Qualification in Engineering and Manufacturing?

• To learn about financial management

• To understand the causes of material failure and methods to prevent it

• To study ancient history

• To explore culinary arts

What is the most common type of iron corrosion known as?

• Tarnish

• Patina

• Rust

• Verdigris

How does intergranular corrosion affect metals?

• It changes the color of the metal

• It affects the mechanical properties along the grain boundaries

• It melts the metal

• It causes the metal to expand

What is the main cause of turbulence in pipes that leads to erosion corrosion?

• Chemical reactions on the pipe surface

• Pitting on the inner surfaces of pipes

• Slow movement of fluid

• High temperature of the fluid

What factors can lead to different types of deformation?

• Temperature and humidity

• Type of material, size, and forces applied

• Color and texture

• Age and weight

What is a characteristic of elastic deformation?

• It is irreversible.

• It occurs primarily in ductile metals.

• It can be reversible.

• It leads to shortening of bars and columns.

Which type of fracture involves plastic deformation before failure?

• Brittle fracture

• Ductile fracture

• Elastic fracture

• Thermal fracture

Why is brittle fracture considered undesirable in building construction?

• It requires a lot of maintenance

• It propagates instantly, causing sudden failure

• It is too expensive to repair

• It is too flexible for construction

Why is necking closely associated with yielding?

• Because it increases the material's temperature

• Because it concentrates a large amount of local strain in a small region

• Because it changes the material's color

• Because it reduces the material's weight

What is one of the main characteristics of ductile fracture known as?

• Brittle fracture

• Shear fracture

• Cup-and-cone formation

• Cleavage fracture