Exam Revision Flashcards
What is a resultant force?
A resultant force is the single force and associated torque obtained by combining a system of forces and torques acting on a rigid body.
What is a moment?
A moment is an expression involving the product of a distance and another physical quantity, and in this way it accounts for how the physical quantity is located or arranged.
What is the equation for a moment of a force?
moment = F x d Moment = Force x distance
What is Life Cycle Analysis?
Alifecycle analysisis a way of figuring out the overall impact that a particular human product has on the environment in its entire existence.
What material property relates to a material’s acidity or alkilinity?
Chemical
What material property relates to a material’s elasticity or plasticity?
Mechanical
What material property relates to a material’s electrical conductivity?
Electrical
What are some physical properties of a material?
Dimensions/Shape Density/Specific Gravity Porosity Mointure Content Macrostructure Microstructure
What material property relates to materials that show plastic deformation?
Ductility
What is the definition of material brittleness?
Materials which break or crack with little deformation.
What material property relates to materials that are difficult to deform and require a large force for a small deformation?
Stiffness
What is the definition of material weakness?
Materials that have a low tensile strength.
What material property relates to materials that are able to withstand impact forces and require a large force to produce plastic deformation
Tougness
What is the definition of material hardness?
Materials that resist plastic deformation.
What material property relates materials that show large plastic deformation before cracking or breaking under compressive forces?
Malleability
