Mohd Sadaf

24 Questions 49 Answers 0 Followers

Questions related from Mohd Sadaf

What is the limit of penetration in carbon steel for eddy current based inspection?

Theoretically, at lower A/C excitation frequencies; say around 100 Hz, penetration of 5-10 mm is achievable in carbon steel (ferromagnetic) material. But, there is literature suggesting that this...

11 March 2024 514 0 View

Can anyone help in modelling a case in OLGA flow assurance software?

I am modelling a case where petroleum products (gasoline, diesel) are to be handled together with Ethanol. I have created a fluid file (.mfl) with streams defined as gasoline, diesel and Ethanol...

22 November 2023 8,125 0 View

Can anyone help in modelling a fluid file in Multiflash (KBC) software?

I need to model a fluid that is a mixture of Ethanol and petroleum products (Gasoline). Which equation of state(EoS) and thermodynamic model is most suitable? Peng-Robinson, RKS or anyother?

22 November 2023 750 0 View

When eddy current sensors approach carbon steel it's impedance increases unlike Al or Cu. Does this difference vanish at high frequency?

Literatures suggest that unlike non-ferromagnetic materials that lead to a decrease in impedance of the eddy current sensor, ferromagnetic materials lead to an increase in impedance of the coil....

07 July 2023 9,004 2 View

Which output parameter is better for analyzing response of eddy current sensors for metal loss (in ferromagnetic test piece)?

Some papers suggest analyzing variation in impedance of the eddy current sensor (type: PCB planar spiral sensor; absolute) while others suggest variation in frequency.

07 July 2023 992 0 View

How to get resonant frequency of a PCB (spiral) coil in COMSOL?

I need to design an eddy current test probe for inspection of ferromagnetic test piece. I have come across a sample solution that solves for Eigenfrequency of a PCB coil in COMSOL. I needed to...

27 April 2023 136 1 View

How to model a planar coil type Eddy current test probe in ANSYS Maxwell for determining resonant frequency?

I have modelled a planar coil in ANSYS Maxwell with Eddy Current. I am getting the B value, Resistance R, Inductance L etc. but the software seems to ignore the stray capacitance in the circuit....

27 April 2023 6,882 0 View

Are machine learning (deep learning) and AI threats to the job security and employment opportunity of technical staff and even senior executives?

The most common example is the GOOGLE lens application. The experience and decision making ability acquired by the human beings is limited as compared to the BIG DATA that an intelligent machine...

01 June 2020 2,636 3 View

Any literature on radiation by hot combustion gases of Fossil Fuel Engines , say, at 600-700 K?

How can we find out the wavelengths expected to be emitted by gases (Nitrogen and Carbon dioxide) at temperatures around 600 K? It has been gathered that gases don't follow Wien's law & also...

30 August 2019 1,577 1 View

Can we use infrared-transmitting materials like silicon to dissipate heat energy from exhaust gases through radiation?

Can we use infrared-transmitting materials like silicon (on upward-facing hemisphere of exhaust pipes) to dissipate heat energy from exhaust gases discharged from Generators, vehicles etc,...

20 August 2019 3,399 10 View

Energy, I believe, existed before TIME (beginning of change). Time is a result of the Second Law of Thermodynamics that was imposed on Energy. Right?

If what I am thinking is right, then Energy should be the fundamental dimension in physics, not Time

10 June 2017 4,075 19 View

What is the percentage v/v of corrosion inhibitors being mixed with petroleum products in the Oil Industry?

What is the recommended range of mixing as per IQCM (Industry Quality Control Manual)?

09 May 2017 1,871 1 View

Would activated charcoal absorb gasoline vapours in negligible(1:50) ratio present in atmospheric air?

any cooling required?

20 January 2016 6,989 2 View

I am trying to condense gasoline vapors from air having ratio 1:99. would I have to go in cryogenic temperature range for that?

the available works by SAE talk of upto 1:20 ratio that suggest that about 70% of gasoline present in air in 1:20 ratio would condense at upto 0 degree centigrade

19 January 2016 6,815 3 View

I want an odometer that records distance/speed against time for pilferage in pipelines?

When my mechanical assembly operates,on finding a pilferage, the circuit having odometer will break open and after sometime the circuit will get completed again. I want this time lag to be visible...

26 May 2015 1,866 1 View

Is this possible to track movement on the basis of cellphone signals (3G, 4G etc) in realtime?

GPS-enabled navigation is common. There are softwares for locating a person by his cellphone signal(other than GPS), but can we do realtime tracking also as in the case of GPS navigation systems?

13 May 2015 6,271 4 View

Which one is stronger (Higher frequency), cellphone signal or GPS signal, generally meant for smartphones?

actually I have tested & found that cellphone receives signal under the soil even below 1 foot depth. I wanted to know, if the whether GPS signal would also reach upto there?

11 May 2015 6,900 18 View

Can a GPS device receive signal underground (soil)? Some manufacturers claim that. Could anyone help?

Its very very crucial for my project

08 May 2015 5,982 8 View

What is the minimum required configuration of a computer to run a CFD program in Fortran 77?

Can regular PCs with say Intel Corei3 processors with 4GB RAM serve the purpose?

21 June 2014 2,545 4 View

Any inputs on application of 'ON PSP (Pipe-to-soil potential) data' for detecting pilferage/leak location in C.P. protected underground pipelines?

The idea is discussed in the paper. Oil sector researchers may kindly review and give feedback.

02 June 2014 3,458 4 View

What are the practical problems with low height flights apart from convection currents?

Why don't we have low flying vehicles like 'Drone' even for single passenger? Can we make use of Diffusers/Nozzles in combination with SERVO-Motor operated blowers to attain sufficient LIFT?

26 May 2014 3,450 7 View

I need to build a setup for generating a dense magnetic field and would like to know if an assembly of solenoids is a good option?

I am working on the concept of 'force on a current carrying conductor in magnetic field' for which I need to generate approx. 1-D magnetic field. Would an assembly of solenoids be a good option or...

24 April 2014 9,457 4 View

Surface roughness of old pipelines involving PIGGING operation (scratching with metallic wires) - any thoughts?

During the research (attached herewith), theoretical calculations suggest that the 60 years old pipeline (API-5LX46) that has been PIGGED (a process of passing an instrument with Mild Steel...

15 April 2014 6,721 16 View

Can anyone help with my proposal for aerial surveillance of underground petroleum pipelines?

This suggestion was rejected by reviewers of my company. I believe there are some legal/licensing complications involved in using the scheme. I had proposed aerial surveillance of underground...

15 April 2014 7,953 1 View