Purnashis Chakraborty

6 Questions 5 Answers 0 Followers

Questions related from Purnashis Chakraborty

Are the yield strength of compression test and tensile test same for AA-7075?

I am doing quasi static and high strain rate compression and tension test but the yield value are different. Compression yield is grater than tensile yield. What is the reason behind it.

08 August 2018 10,058 17 View

What is the homogenization temperature for AA7075-T7351 alloy?

I mean what is the optimum homogenization temperature for AA7075-T7351 alloy.

05 May 2018 9,062 5 View

Why fracture strain for metals (Aluminum, Mild Steel) in pure share is higher than pure tension?

We are studying the effect of combine (Shear and tension) loading on failure of Metallic structure (Aluminum and mild Steel). We observed that failure strain in Pure shear is higher than the Pure...

03 March 2018 5,386 13 View

Why does Fracture Strain and Fracture Toughness increases with increase in strain rate, for aluminum alloys ?

Dear all researchers, I observed that Fracture Strain and Fracture Toughness of Aluminum Alloys depends upon the strain rate, as we increase the stain rate Fracture Strain and Fracture Toughness...

01 January 2018 1,128 17 View

How to evaluate Johnson-Cook material constant (A,B,n,C,m) from a true stress vs true strain data?

I have some experimental data from tension tests,compression tests on a material and need to formulate a model using Johnson cook's approach (paper: "A Constitutive model and data for metals...

02 February 2017 9,236 3 View

Why does flow stress increases with increase in strain rate?

I know that at low strain rates the flow stress increases with increase instrain rate. At higher strain rates it still increases but at a slower rate because of the softening effect due to...

09 September 2016 8,037 8 View