Final answer:
Friction values of brake shoes and linings include the coefficient of friction, shear strength, tensile strength, and elastic modulus. The coefficient of friction indicates the amount of frictional force between two surfaces. Shear strength measures the maximum force before deformation or breakage, while tensile strength measures the maximum stress before rupture. The elastic modulus quantifies the stiffness and deformation of a material.
Step-by-step explanation:
Friction values of brake shoes and linings include the following specifications:
- Coefficient of friction: The coefficient of friction is a dimensionless constant that indicates the amount of frictional force between two surfaces in contact. It is represented by the symbol μ and is specific to the material combination.
- Shear strength: Shear strength is the maximum force that can be applied parallel to the surface of a material before it starts to deform or break. It is an important factor in determining the effectiveness of brake shoes and linings.
- Tensile strength: Tensile strength is the maximum stress a material can withstand before it ruptures or breaks due to tensile forces. It measures the resistance of a material to pulling forces.
- Elastic modulus: The elastic modulus is a measure of how stiff a material is and how it deforms when subjected to an external force. It quantifies the relationship between stress and strain in a linear elastic material.