Why austempered can have higher toughness than quenched and tempered in steel?

06 July 2017 193 0 View

No title

04 May 2017 7,211 2 View

Some questions about the plane strain and plane stress state?

in the plain strain state definition, the Z-direction has stress ,but no strain. is it possible a direction have stress but no strain? likewise, for the plane stress state, there has strain ,but...

10 November 2016 7,311 0 View

What kinds of characteristics those fracture surfaces have?

09 October 2016 6,886 0 View

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09 October 2016 6,746 2 View

What effects temper martensite embrittlement have on fatigue of steel ?

what effects temper martensite embrittlement have on fatigue crack nucleation and propagation?

09 October 2016 9,977 26 View

How can calculate fracture load of three-point bending testing through strength and ductility data obtained from tensile testing?

How can calculate fracture load of three-point bending testing through strength and ductility data obtained from tensile testing? and in three-point bending testing ,how to calculate stress...

08 September 2016 6,521 4 View

No title

08 September 2016 381 53 View

Is it possible the cleavage fracture happens after large amount of elongation in the uniaxial tension test of intact sample?

In some steels,is it possible the cleavage fracture happens after large amount of elongation in the uniaxial tension test of intact sample?

07 August 2016 8,313 9 View

No title

07 August 2016 3,819 0 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 3 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

How do you mesh a thin solid in Fluent?

Hello, I have used the shell function on SpaceClaim to create thin solids for the model I am studying. These are contained within an enclosure for my study. I chose this approach as it avoids the...

24 February 2021 8,856 3 View

No streamlines present in a small region inside a flow. This means exactly what?

No streamlines present means whether the flow is getting obstructed there and the velocity inside the region is zero? Or else, the fluid is trapped inside that region with a nonzero velocity?...

22 February 2021 5,249 10 View

How to solve the fatal error "the entire source was rejected" in MCNP?

Simple geometry was made having concentric cylinders bounded by a square region. The geometry has a reflective boundary. The source was defined at one point in the boundary and when it had been...

17 February 2021 4,364 3 View

Algorithms to filter corrective max and min from a set of data?

I've got this 5 year Direct Normal Irradiance data I downloaded from https://re.jrc.ec.europa.eu/. I ordered this by year and by every 24 hours because I need the DNI curve by max in summer, min...

17 February 2021 2,777 5 View