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How does Creep happen?
Creep usually occurs as a result of thermal and physical stress overcoming the elasticity of the metal preventing it from returning to its original shape after the stress is removed.
When a material is loaded within elastic limit the what is proportional to the what produced by the stress?
The displacement is proportional to the strain. This does not factor for creep and time.
Metallurgical factors influencing various stages of creep?
Creep in materials is influenced by several metallurgical factors, including grain size, phase composition, and the presence of impurities or second-phase particles. Fine grain sizes typically enhance creep resistance due to the increased number of grain boundaries, which can impede dislocation movement. Additionally, the presence of alloying elements can strengthen the material through solid solution strengthening or precipitation hardening, while certain phases may enhance or detract from creep performance depending on their stability and ductility at elevated temperatures. Lastly, the material's temperature and stress conditions also play crucial roles in determining the creep behavior.
What is scope creep in project management?
Scope creep refers to scope changes applied without processing them though the change control process. The role of the Project Manager is to ensure that Scope Creep does not happen in their project. As per the PMBoK guide, the Control Scope process is used to control the projects scope.
When a project scope has a tendency to increase - known as?
Scope creep
What has the author Ivan Avgustovich Oding written?
Ivan Avgustovich Oding has written: 'Creep and stress relaxation in metals'
What is difference between a landslide and a creep?
one is water and the other is land
What is difference between landslide and creep?
Mass movement is a fast process in the formation of landslides.Mass movement is a slow process in the formation of creep.
What are three factor that affect creep?
The three factors that affect creep in materials are temperature, applied stress, and time. As temperature increases, materials tend to exhibit higher rates of creep. Similarly, higher applied stress accelerates creep deformation, and longer durations of stress exposure also contribute to increased creep.
What has the author Y M Haddad written?
Y. M. Haddad has written: 'Viscoelasticity of engineering materials' -- subject(s): Plastics, Elastic solids, Polymers, Stress relaxation, Wave-motion, Theory of, Materials, Viscoelasticity, Creep
What is the different between fatigue and creep?
Both Fatigue and Creep are causes of failure of a material at a stress value significantly below the Allowable threshold. They differ from each other in the sense that fatigue is defined as the failure of a material, subjected to multiple loading and unloading cycles, even though, in none of the instances, the applied stress crosses the Allowable stress value. The fatigue life of a material is usually specified in # of loading/unloading cycles it can undergo, without failing. The fatigue life decreases as the applied stress approaches the Allowable Stress. CREEP, on the other hand, is time related failure of a material. Creep, explains that a material subjected to a certain applied stress will continue to deform at that constant stress value. Hence, creep results in an increase in strain value while the stress is constant, until it causes the failure of the subject material. CREEP tends to increase with the temperature of the specimen
How does Creep happen?
Creep usually occurs as a result of thermal and physical stress overcoming the elasticity of the metal preventing it from returning to its original shape after the stress is removed.
What are 3 factors affect creep?
Three factors that affect creep are temperature, stress level, and material properties. Higher temperatures generally increase the creep rate, allowing materials to deform more easily over time. Additionally, increased stress levels can accelerate creep deformation as the material is subjected to greater forces. Lastly, the intrinsic properties of the material, such as its microstructure and composition, play a significant role in determining its resistance to creep.
What has the author Sharad A Patel written?
Sharad A. Patel has written: 'Creep behavior of columns' 'Stress distribution in beams of thin-walled sections in the presence of creep' 'Torsion of cylindrical and prismatic bars in the presence of primary creep'
What is the difference between creep slump. And runoff?
Creep is the irreversible deformation of a material over time under constant load, while slump is the vertical downward movement of material due to gravity. Runoff is the flow of water over the land surface and is unrelated to the deformation of materials like creep and slump.
Why is creep slow?
Creep is slow because it involves the movement of atoms or molecules over time due to the influence of stress and temperature. This movement occurs at a very slow rate because the bonds between atoms need time to break and reform in order for the material to deform.
How do you prevent creep in materials?
To prevent creep in materials, it's essential to select materials with high creep resistance, such as those with strong bonding and crystalline structures. Additionally, designing components to minimize stress concentrations and using appropriate heat treatment processes can enhance their resistance. Regular monitoring and maintenance can also help identify and address potential creep issues before they lead to failure. Lastly, operating at lower temperatures and stress levels can significantly reduce the likelihood of creep occurring.
