Tensile Testing (Determining Young's Modulus)

AI Thread Summary
Calculating Young's modulus from tensile testing may not be sensible if the material exhibits non-linear behavior or significant slipping during the test. The stress-strain curve must show a linear region to accurately determine Young's modulus, which is derived from the gradient of that linear section. If slipping occurs, it can lead to inaccuracies in the measurements, making the calculation unreliable. Therefore, proper conditions must be ensured during testing to obtain valid results. Accurate determination of Young's modulus is crucial for understanding material properties in engineering applications.
stpmmaths
Messages
28
Reaction score
0
Question:
Why is it not sensible to calculate the Young's modulus of the material (steel) when the experiments was conducted?

But I thought it should be possible to calculate the Young's modulus after plotting the stress/strain curve. Young's modulus can be found by finding the gradient of the straight line on the curve. But what with the question? :confused:
 
Engineering news on Phys.org
Is it related to the slipping which occurs during the test?
 

Thread 'Race car suspension Class'

Posted June 2024 - 15 years after starting this class. I have learned a whole lot. To get to the short course on making your stock car, late model, hobby stock E-mod handle, look at the index below. Read all posts on Roll Center, Jacking effect and Why does car drive straight to the wall when I gas it? Also read You really have two race cars. This will cover 90% of problems you have. Simply put, the car pushes going in and is loose coming out. You do not have enuff downforce on the right...
View full post »

Thread 'Cantilever help'

I'm trying to decide what size and type of galvanized steel I need for 2 cantilever extensions. The cantilever is 5 ft. The space between the two cantilever arms is a 17 ft Gap the center 7 ft of the 17 ft Gap we'll need to Bear approximately 17,000 lb spread evenly from the front of the cantilever to the back of the cantilever over 5 ft. I will put support beams across these cantilever arms to support the load evenly
View full post »
Thread 'Physics of Stretch: What pressure does a band apply on a cylinder?'

Thread 'Physics of Stretch: What pressure does a band apply on a cylinder?'

Scenario 1 (figure 1) A continuous loop of elastic material is stretched around two metal bars. The top bar is attached to a load cell that reads force. The lower bar can be moved downwards to stretch the elastic material. The lower bar is moved downwards until the two bars are 1190mm apart, stretching the elastic material. The bars are 5mm thick, so the total internal loop length is 1200mm (1190mm + 5mm + 5mm). At this level of stretch, the load cell reads 45N tensile force. Key numbers...
View full post »

Similar threads

Extracting mechanical properties from strain-stress plot (real test)
Replies
5
Views
1K
Simulation of Cyclic Loading in Tensile Test
Replies
14
Views
2K
Confusion Calculating Young's Modulus
Replies
5
Views
2K
High strain rate testing using the SHPB -- Help please
Replies
3
Views
2K
Help : Determine shear modulus from tensile test
Replies
1
Views
4K
Why true strain is always smaller than nominal strain in tensile test?
Replies
1
Views
2K
Uniaxial Tension Test: Calculating Strain from Extension Data?
Replies
1
Views
2K
Calculating Young's Modulus from this Stress/Strain Graph
Replies
29
Views
7K
B Why is Young's modulus constant below the limit of proportionality?
Replies
23
Views
4K
Anisotropic Modulus of elasticity and Poisson's ratio
Replies
2
Views
6K

Hot Threads

Recent Insights

Back
Top