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socrates_1
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Hi, I am trying to find out if permissible stress and tensile are the same.If not,what is their relation?Thank you.
Studiot said:First thing to decide is if you mean tensile strength as in your title or tensile stress as your post implies.
Tensile stress refers to a type of stress.
Strength refers to the maximum possible stress of that type that can be applied without failure.
So tensile strength refers to the maximum possible tensile stress, at which point the subject fails.
Permissible stress refers to an amount of stress that will not cause failure.
You should look up 'factor of safety.'
This is the ratio of the strength to permissible ie maximum to permissible and is usually in the range 2.5 : 1 to 8 :1.
Permissible stress and tensile strength are both measurements used to describe the amount of stress or force that a material can withstand before it deforms or breaks.
No, they are not the same. Permissible stress is the maximum amount of stress a material can handle without causing permanent damage, while tensile strength is the maximum amount of stress a material can handle before breaking.
Permissible stress takes into account the material's ability to recover from stress and remain functional, while tensile strength only measures the maximum amount of stress a material can handle before breaking. Additionally, permissible stress is often used in design calculations and safety standards, while tensile strength is used to measure the overall strength of a material.
Both measurements are important and serve different purposes. Permissible stress is important for ensuring the safety and functionality of a material, while tensile strength is important for determining the overall strength and durability of a material.
Permissible stress is typically determined through testing and analysis of a material's properties, such as its elasticity and yield strength. Tensile strength is also determined through testing, specifically by applying a force to a material until it breaks. Both measurements are important in understanding a material's behavior under stress and its limitations.