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IIT Madras
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Mechanical Engineering
>> Experimental Stress Analysis (Video) >>
Modules / Lectures
Overview of Experimental Stress Analysis
Transmission Photoelasticity
Introduction to Three Dimensional Photoelasticity and Digital Photoelasticity
Photoelastic Coatings and Brittle Coatings
Strain Gauges
Discussion Session
What is the value of stress?
Can you get closed-form solution for all problems?
How this stress analysis can be carried out?
Do you know in strength of materials what is the basic assumption that has been used in solving the problem on hand?
What is the difference between an axial member and a member that bends?
Are there any stresses in this chain? You have to know how this component is fabricated.
What these contours are? What do these contours represent? Therefore what is the physics behind the problem?
Could you explain in-plane and out-of-plane displacements?
What are non-contact techniques?
What is holography?
How this phase information is recorded?
In holography you have told about the isopachics that is sigma1 plus sigma2, I did not understand how sigma1 plus sigam2 is the measure of the thickness?
What are objective speckles and subjective speckles?
What are the speckle methods that we can think of and what are its key features different from hologram interferometry?
In a two dimensional problem without resorting to the Mohrs circle approach how would you find the principal stress and their corresponding directions uniquely?
Find out the stress tensor in a transformed coordinate system
What is the mathematical definition of a free surface? Specify the stress tensor on free outward corners. Justify your answer.
Find out the shear stress distribution on a three point bend specimen
How does the handedness change when the relative retardation is modified?
Fringe ordering is one of the important aspects in photoelasticity as we saw from this course. Just we want to know what additional precautions we have to take so that we do not miss the correct ordering or is there any way to validate what we do.
What are the fringe thinning methods and what are the various algorithms involved in it?
How does the photoelastic strain gauge work?
In that case will the thickness of the quarterwave plate and polarizer be sufficient to give the required retardation and to get enough fringe orders?
How do we select the suitable gauge length for a given class of problems?
When installing the strain gauge why are we rubbing at 45 degrees by using emery paper?
In determination of boundary stresses what difference does it make when you place the tensile specimen parallel to the model or perpendicular to the model?
What is the value of stress?
(Refer Lecture No 01 - Video Time 00:03:40)
Top
Can you get closed-form solution for all problems?
(Refer Lecture No 01 - Video Time 00:06:33)
Top
How this stress analysis can be carried out?
(Refer Lecture No 01 - Video Time 00:07:54)
Top
Do you know in strength of materials what is the basic assumption that has been used in solving the problem on hand?
(Refer Lecture No 01 - Video Time 00:10:35)
Top
What is the difference between an axial member and a member that bends?
(Refer Lecture No 01 - Video Time 00:12:28)
Top
Are there any stresses in this chain? You have to know how this component is fabricated.
(Refer Lecture No 01 - Video Time 00:26:57)
Top
What these contours are? What do these contours represent? Therefore what is the physics behind the problem?
(Refer Lecture No 02 - Video Time 00:12:05)
Top
Could you explain in-plane and out-of-plane displacements?
(Refer Lecture No 02 - Video Time 00:25:40)
Top
What are non-contact techniques?
(Refer Lecture No 02 - Video Time 00:30:30)
Top
What is holography?
(Refer Lecture No 05 - Video Time 00:33:04)
Top
How this phase information is recorded?
(Refer Lecture No 05 - Video Time 00:37:40)
Top
In holography you have told about the isopachics that is sigma1 plus sigma2, I did not understand how sigma1 plus sigam2 is the measure of the thickness?
(Refer Lecture No 06 - Video Time 00:16:21)
Top
What are objective speckles and subjective speckles?
(Refer Lecture No 07 - Video Time 00:01:00)
Top
What are the speckle methods that we can think of and what are its key features different from hologram interferometry?
(Refer Lecture No 07 - Video Time 00:01:36)
Top
In a two dimensional problem without resorting to the Mohrs circle approach how would you find the principal stress and their corresponding directions uniquely?
(Refer Lecture No 10 - Video Time 00:37:13)
Top
Find out the stress tensor in a transformed coordinate system
(Refer Lecture No 10 - Video Time 00:42:15)
Top
What is the mathematical definition of a free surface? Specify the stress tensor on free outward corners. Justify your answer.
(Refer Lecture No 10 - Video Time 00:42:52)
Top
Find out the shear stress distribution on a three point bend specimen
(Refer Lecture No 10 - Video Time 00:55:25)
Top
How does the handedness change when the relative retardation is modified?
(Refer Lecture No 41 - Video Time 00:00:12)
Top
Fringe ordering is one of the important aspects in photoelasticity as we saw from this course. Just we want to know what additional precautions we have to take so that we do not miss the correct ordering or is there any way to validate what we do.
(Refer Lecture No 41 -Video Time 00:05:35)
Top
What are the fringe thinning methods and what are the various algorithms involved in it?
(Refer Lecture No 41 - Video Time 00:12:40)
Top
How does the photoelastic strain gauge work?
(Refer Lecture No 41 - Video Time 00:24:59)
Top
In that case will the thickness of the quarterwave plate and polarizer be sufficient to give the required retardation and to get enough fringe orders?
(Refer Lecture No 41 - Video Time 00:26:17)
Top
How do we select the suitable gauge length for a given class of problems?
(Refer Lecture No 41 - Video Time 00:28:17)
Top
When installing the strain gauge why are we rubbing at 45 degrees by using emery paper?
(Refer Lecture No 41 - Video Time 00:34:05)
Top
In determination of boundary stresses what difference does it make when you place the tensile specimen parallel to the model or perpendicular to the model?
(Refer Lecture No 41 - Video Time 00:35:49)
Top
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