material science

• Ferrous -These materials are those which have iron as their main constituent.
• Non-Ferrous - These type of metals lacks magnetic properties but are prized for their resistance to rust and corrosion.
• Nichrome - Which of the following has a chemical composition of 60% nickel, 15% chromium, & 25% iron.
• Invar - Which of the following has a chemical composition of 64% iron & 36% nickel.
• Constantan - Which of the following has a chemical composition of 60% copper & 40% nickel.
• Manganin - Which of the following has a chemical composition of 84% copper, 12% manganese, & 4% nickel.
• Atomic - It represents how atoms are bounded to each other to form a specific material.
• Ionic - Atoms of a metallic element easily give up their valence electrons to the non-metallic atoms.
• Covalent -It is the sharing of electrons between adjacent atoms to stabilize the electron configuration of the material.
• Metallic - With this model, these valence electrons are not bound to any particular atom in the solid and are more or less free to drift throughout the entire material forming a “sea of electrons”.
• Ceramics- These are materials that are neither metallic nor organic. They are may be crystalline, glassy or both crystalline and glassy.
• Polymers- These are a wide group of naturally created and synthetic substances constructed from large macromolecules. These macromolecules are generally repeating chains of smaller molecules or monomers.
• Composites- These materials consist of two or more of the three main classification of materials synthesized to achieve a combination of properties.
• Classify: Leather - Polymer
• Classify: Nickel - Metal
• Classify: Rubber - Polymer
• Classify: Concrete - Composite
• Classify: Glass - Ceramic
• Classify: Fiberglass - Composite
• Classify: Tiles - Ceramic
• Ionic - Atoms of a metallic element easily gives up their valence electrons to the non-metallic atoms.
• Covalent - It is the sharing of electrons between adjacent atoms to stabilize the electron configuration of the material.
• Composites - These materials consist of two or more of the three main classification of materials synthesized to achieve a combination of properties.
• Fatigue - It is a type of failure of a material where it fails below the yield point stress when subjected to repeated stresses.
• Resilience - It is the property of a material to absorb energy and to resist shock and impact loads
• Toughness -
It is the property of a material to resist fracture due to high impact loads like hammer blows.
• Thermal Conductivity - It is the property of a material to conduct heat through itself
• Permeability- it is property of a material which indicates that how easily magnetic flux is build up in the material.
• Hysteresis- It is the lack of retrace ability of magnetization curve
• Reflection- When a beam of photons strikes a material, some of the light is scattered at the interface between the media even if both are transparent.
• Refraction - When light photons are transmitted through a material, they causes polarization of the electrons in the material and by interacting with the polarized materials, photons lose some of their energy.
• Material Testing -It is a respected and established technique which is used to ascertain both the physical and mechanical properties of raw materials and components
• What load is present in a tension test? - Tensile load
• What load is present in a compression test? - Compressive
• What does LTE means in material testing? - Linear Thermal Expansion
• What does UTM means in material testing? - Universal Testing Machine
• Instruments for measuring linear and volumetric thermal expansion coefficients are also known as ________. - dilatometers
• What load can be applied in a torsion test? - All of the above
• It is the degree to which a structural element is displaced under a load (due to its deformation). - Deflection
• It is the ratio of the applied force divided by the unit area that has a tendency to elongate or stretch the material. - Tension