👉When performing tensile test...
🏷Type of fracture you observe can reveal a lot about material's properties.
⭐️Let's quick Learn about it.
▬ 𝗗𝘂𝗰𝘁𝗶𝗹𝗲 𝗙𝗿𝗮𝗰𝘁𝘂𝗿𝗲 ▬
● Cup-and-Cone Shape : Fracture surface is typically rough & fibrous, indicating significant plastic deformation.
● High Energy Absorption : Ductile materials can absorb a lot of energy before failing, making them tough & less prone to catastrophic failure.
● Elongation : Noticeable elongation & reduction in cross-sectional area occur before material breaks, observable as material necks down.
● Microvoid Coalescence : Fracture process involves the nucleation, growth, & coalescence of microvoids, leading to material's separation.
▪ Examples of Ductile Materials :
- Copper
- Mild Steel
- Aluminum
▬ 𝗕𝗿𝗶𝘁𝘁𝗹𝗲 𝗙𝗿𝗮𝗰𝘁𝘂𝗿𝗲 ▬
● Flat and Smooth Surface : Fracture surface appears smooth & shiny, often with a granular or crystalline appearance.
● Low Energy Absorption : Brittle materials absorb less energy before fracturing, making them more susceptible to sudden failure under stress.
● No Significant Elongation : Little to no necking or plastic deformation occurs before the material breaks.
● Cleavage Planes : Brittle fracture often occurs along specific crystallographic planes, known as cleavage planes, where atomic bonds are weakest.
▪ Examples of Brittle Materials :
- Glass
- Cast Iron
- Ceramics
- High-Carbon Steel
- - - - - - - - -
◆ Factors Influencing Fracture Behavior:
- Strain Rate
- Temperature
- Microstructure
- Material Composition
◆ Testing for Ductile and Brittle Fracture:
- Tensile Testing
- Charpy Impact Testing
- Fracture Toughness Testing
◆ Real-World Example: Titanic Disaster 🚢
- Sinking of Titanic is famous example of brittle fracture. Ship's hull was made of steel that became brittle at freezing temperatures of North Atlantic. When Titanic struck an iceberg, the hull plates fractured suddenly, leading to the catastrophic sinking of the ship.
@etconp
🏷Type of fracture you observe can reveal a lot about material's properties.
⭐️Let's quick Learn about it.
▬ 𝗗𝘂𝗰𝘁𝗶𝗹𝗲 𝗙𝗿𝗮𝗰𝘁𝘂𝗿𝗲 ▬
● Cup-and-Cone Shape : Fracture surface is typically rough & fibrous, indicating significant plastic deformation.
● High Energy Absorption : Ductile materials can absorb a lot of energy before failing, making them tough & less prone to catastrophic failure.
● Elongation : Noticeable elongation & reduction in cross-sectional area occur before material breaks, observable as material necks down.
● Microvoid Coalescence : Fracture process involves the nucleation, growth, & coalescence of microvoids, leading to material's separation.
▪ Examples of Ductile Materials :
- Copper
- Mild Steel
- Aluminum
▬ 𝗕𝗿𝗶𝘁𝘁𝗹𝗲 𝗙𝗿𝗮𝗰𝘁𝘂𝗿𝗲 ▬
● Flat and Smooth Surface : Fracture surface appears smooth & shiny, often with a granular or crystalline appearance.
● Low Energy Absorption : Brittle materials absorb less energy before fracturing, making them more susceptible to sudden failure under stress.
● No Significant Elongation : Little to no necking or plastic deformation occurs before the material breaks.
● Cleavage Planes : Brittle fracture often occurs along specific crystallographic planes, known as cleavage planes, where atomic bonds are weakest.
▪ Examples of Brittle Materials :
- Glass
- Cast Iron
- Ceramics
- High-Carbon Steel
- - - - - - - - -
◆ Factors Influencing Fracture Behavior:
- Strain Rate
- Temperature
- Microstructure
- Material Composition
◆ Testing for Ductile and Brittle Fracture:
- Tensile Testing
- Charpy Impact Testing
- Fracture Toughness Testing
◆ Real-World Example: Titanic Disaster 🚢
- Sinking of Titanic is famous example of brittle fracture. Ship's hull was made of steel that became brittle at freezing temperatures of North Atlantic. When Titanic struck an iceberg, the hull plates fractured suddenly, leading to the catastrophic sinking of the ship.
@etconp