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What is the difference between strain and Elongation?
Strain is the measure of length change per unit length. Elongation usually refers to strain under load at failure point.
What is strain energy theory?
The strain theory is a state of deviation from bond angle of a normal tetrahedral angle.
Stress strain curve for brittle material?
Brittle materials such as ceramics do not have a yield point. For these materials the rupture strength and the ultimate strength are the same, therefore the stress-strain curve would consist of only the elastic region, followed by a failure of the material.
What happens if the limits of stress and strain are exceeded in a structure?
If the limits of stress and strain are exceeded in a structure, it can lead to material failure, which may manifest as deformation, cracking, or complete structural collapse. This occurs when the material reaches its yield strength, transitioning from elastic to plastic behavior, resulting in permanent damage. In extreme cases, such as in overloaded structures, catastrophic failure can happen suddenly, posing significant safety risks. Proper engineering design incorporates safety factors to prevent such occurrences.
How do you calibrate strain gauges?
The strain gage indicates strain, and the stress is from Hooke's law; stress = modulus times strain so you need to know the modulus of elasticity
What is the failure strain?
Failure strain refers to the amount of deformation a material can undergo before it fails or fractures, typically expressed as a percentage of its original length. It is a critical parameter in material science and engineering, indicating the material's ductility and ability to withstand stress. In practical terms, a higher failure strain suggests a more ductile material that can absorb more energy before breaking, while a lower failure strain indicates a more brittle material. Understanding failure strain is essential for predicting material behavior under load and ensuring structural integrity in engineering applications.
What is the difference between strain and Elongation?
Strain is the measure of length change per unit length. Elongation usually refers to strain under load at failure point.
What is the relationship between engineering strain and percent elongation?
strain is percent elongation/100; for example a strain of 0.02 is 2% elongation. Often we refer to elongation at failure; for example if a material fails at 10% elongation its strain is 0.10
What is strain energy theory?
The strain theory is a state of deviation from bond angle of a normal tetrahedral angle.
What is the breaking strain or brittle failure point?
The breaking strain refers to the maximum stress or force a material can withstand before it ruptures or fails. The brittle failure point is the stress level at which a material fractures with little to no plastic deformation. These properties are important for determining the integrity and durability of materials in various applications.
How does the strain stress affect the structural integrity of materials under pressure?
When materials are under pressure, strain stress can cause them to deform or break, compromising their structural integrity. This is because the strain stress creates internal forces that can exceed the material's strength, leading to failure.
Is mild steel ductile at room teperature?
Yes, it is - it has a yield point and can strain quite a bit 20% or so before failure
Does a kidney strain have long term affects?
Clearly dietary protein effects GFR [50], with both acute and chronic .... protein intake would have a longer time to renal failure and suggested that a lower ... to the kidney and represent the physiological "strain".
What has the author E Alf written?
E. Alf has written: 'Forming of cracks and failure of welding joints depending on temperature, media influence and strain'
Stress strain curve for brittle material?
Brittle materials such as ceramics do not have a yield point. For these materials the rupture strength and the ultimate strength are the same, therefore the stress-strain curve would consist of only the elastic region, followed by a failure of the material.
Does pulmonary hypertension causes left ventricular failure?
Pulmonary hypertension can lead to right ventricular failure, a condition known as cor pulmonale. This can eventually cause strain on the left side of the heart, potentially leading to left ventricular failure. Regular monitoring and treatment of both pulmonary hypertension and potential resulting heart failure are important in managing this condition.
What are the advantages of using the strain energy?
Strain energy allows for easy computations of internal forces and displacements in structures under loading. It provides a more intuitive understanding of the deformation and energy absorption capabilities of materials. Additionally, strain energy can be used to predict failure or damage in structures, making it a valuable tool in structural analysis and design.
