How can you implement permeability test, Mechanical Engineering

Assignment Help:

Q. How can you implement Permeability test 

As already defined, permeability of porosity of the moulding sand is the message of its ability to permit air to flow through it. It is measured in terms of "Permeability number." In this test, a test specimen of moulding sand (50.8 mm dia. × 50.8 mm long) is placed in a tube. Time taken for 2000 cm3 of air at a pressure of 10 g/cm3  to pass through the specimen is noted. Then, the permeability number is given as:

P = V × h

p ×A× t

Where,                   P = Permeability number

V = Volume of a air passing through test

Specimen

h = Height of specimen p = Pressure of air

A = Cross-sectional area of specimen

t = time taken by air to flow through the

Specimen

Under standard conditions, the formula becomes

P   = 2000 × 5.08

10 × ?/4 × (5.08)2 × t

= 50.128/t


Related Discussions:- How can you implement permeability test

Hardenability of Ferrous Alloys vs Non-Ferrous Alloys, Compare the hardenab...

Compare the hardenability of Ferrous Alloys vs Non-Ferrous Alloys

Casting, What is the difference between blowholes & porosity in casting ?

What is the difference between blowholes & porosity in casting ?

Evaluate mechanical work - thermodynamics, Evaluate mechanical work in diff...

Evaluate mechanical work in different steady flow process: Work done by steady flow process   and work done in non flow process,   1. Constant Volume Process; W 1-2 = V

State of cad data exchange, State of CAD Data Exchange: "Are we closel...

State of CAD Data Exchange: "Are we closely there yet?" the dreaded question we hear wailing from the back of the car. "Yes, nearly there" is our cheerful response. We didn't

Pneumatic circuit, fully automatic pnuematic cicuit explanation#Minimum 100...

fully automatic pnuematic cicuit explanation#Minimum 100 words accepted#

Calculate the flow rate and pressure drop , (a) Oil, with density ρ= 900 kg...

(a) Oil, with density ρ= 900 kg/m 3 , and kinematic viscosity υ=0.00001m 2 /s, flows at the rate of 0.2m 3 /s through 500m of a cast iron pipe of diameter d=200mm. Using this infor

Batch furnaces, Batch Furnaces: An insulated, the heating system, cha...

Batch Furnaces: An insulated, the heating system, chamber for placing the job, and a door or various doors for placing the job in place are the necessity of these furnaces. T

Thermophyics, The steam that leaves the super-heater is expanded from 130ba...

The steam that leaves the super-heater is expanded from 130bar at 535°C to 25.2bar at 310°C in a high pressure turbine. The steam from the exit of the HP turbine is reheated to 535

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd