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What is plastic behaviour of a material under load?
plastic behavior is the region where we have the non linear curve and upon unloading the shape can not be recovered.at this region,the stress is not directly proportional to strain i.e Hooke's law is not obeyed
What is the formula to calculate the total strain experienced by a material under a given load?
The formula to calculate total strain is: Total Strain Elastic Strain Plastic Strain. Elastic strain is the initial deformation of the material under load, while plastic strain is the permanent deformation after the material reaches its yield point.
How to find stress and strain in a material under load?
To find stress and strain in a material under load, you can use the formulas: stress force applied / cross-sectional area of the material, and strain change in length / original length of the material. These calculations help determine how the material deforms under the applied load.
What is yield stress?
Yield stress is the point at which the material is no longer linear under load; the material starts to become plastic and when unloaded will not return to its original length. Typically the yield point is defined as 0.2% offset - the value of strain that remains in the part after unloaded
What is the stiffness of a material?
Stiffness of a material is a measure of its resistance to deformation when subjected to an applied load. It indicates how much a material will deform under a given load. Materials with high stiffness will deform less under load, while materials with low stiffness will deform more.
What is the relationship between load and extension?
The relationship between load and extension is typically described by Hooke's Law, which states that the extension of an elastic material is directly proportional to the load applied to it, provided the material is not deformed beyond its elastic limit. This means that as the load increases, the extension of the material increases linearly within this limit. However, if the load exceeds the elastic limit, the material may undergo permanent deformation, and the relationship may no longer be linear. This principle is fundamental in understanding the behavior of materials under tension or compression.
What does residual Indentation mean?
Residual indentation refers to the permanent deformation or mark left on a material's surface after an external force or load has been removed. This occurs when the material does not fully recover its original shape, often due to plastic deformation. Residual indentation is commonly assessed in materials testing to evaluate properties such as hardness and ductility. It can provide insights into the material's behavior under stress and its long-term durability.
What is the effect of springback concept on plastic deformation?
Springback means Recovered elastic strain on material after the load is removed.
What is the difference between toughness from impact test and toughness from tensile test?
Toughness from impact test is a measure of a material's ability to absorb energy during sudden loading, while toughness from tensile test is a measure of a material's ability to deform plastically before fracturing under a slowly applied load. Impact toughness is important for assessing material behavior under dynamic loading conditions, while tensile toughness provides insight into material behavior under static loading conditions.
What happens in young modulus of elasticity of material when load hanging onit is doubled?
When the load hanging on a material is doubled, the young modulus of elasticity remains constant. Young's modulus is a material property that measures its stiffness and is independent of the applied load. It represents the material's ability to deform elastically under stress without permanent deformation.
1 Describe with the aid of sketches the behavior of beams and columns under load?
the beam will sag downwads
What is the graph of extension against load?
The graph of extension against load typically represents the relationship between the load applied to a material and the resulting extension (or elongation) of that material. In the elastic region, the graph is linear, indicating that the extension is directly proportional to the load, following Hooke's Law. Once the material reaches its yield point, the graph may curve or become nonlinear, indicating plastic deformation. Ultimately, if the load exceeds the material's tensile strength, it may break, leading to a sudden drop in extension.
