Effect of rock abrasivity (los Angeles abrasion test) on wear rate of the drill bit during rock drilling?

As I have conducted los Angeles abrasion test in the laboratory. Three type s of sandstone of varying UCS of Medium grained SS 13 MPa, fune grained SS 17.5 MPa and fine grained SS (pink) 51 MPa....

02 March 2019 7,298 5 View

I have 500 data set, Is it ok to split the in to 60% for training and 40% for testing?

As I have 500 data set in my work. I have split the data in to 60% for training and 40% for testing the data set in ANN. Is it ok to run the data set in NN. Pls give reason behind this so it help...

31 December 2018 7,001 1 View

What is the major application of temperature measurement during drilling?

If we have measured bit rock interface temperature using thermocouple during drilling. By embedded the thermocouple in the rock sample. Then what is the major application for industry,...

07 August 2018 9,646 11 View

Comparison wear rate between fine-grained sandstone and medium grained sandstone?

for fine-grained sandstone the wear rate is 10 mg/sec (temperature produce during drilling is around 128 dec. centigrade) and Medium-grained sandstone the wear rate is 6.66 mg/sec (temperature...

04 May 2018 6,315 0 View

How the wear rate behaves with respect to drill bit diameter?

if the diameter of the drill bit increases with the same spindle speed, wear rate will increase or decrease. give reasons.

03 April 2018 3,570 4 View

Can I cite the material drilling process parameters, in rock drilling process?

As I am doing my research work on rock drilling. In this area, research paper related to operational parameters are very less. Can I cite the material drilling process parameters. Because area and...

03 April 2018 279 3 View

When the drill bit diameter increases, specific energy is decreasing? what is the reason behind this?

drill bit diameter increases from smaller to bigger during drilling operation, mean while we have calculated the Specific energy. but when the drill bit diameter increases, specific energy...

02 March 2018 3,384 6 View

When drill bit diameter increases thrust also increasing?

As the drill bit diameter increases, thrust also increasing. What is major reason behind this. Why it is increasing and even for depth of drill also.

31 December 2017 7,900 4 View

What is the main reason when temperature increases during drilling with decreasing in specific energy?

During continues drilling operation, temperature goes on increases with decreasing in specific energy, what the main reason. What is the technical reason behind this.

11 December 2017 1,201 3 View

Application of temperature measurement during rock drilling in mining industries?

what is the major application (In Mining industry) of Experimental investigation to be carried out for rock core sample to measure the temperature during drilling operation. please give the the...

31 December 2016 4,529 0 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Is there a classification scheme for rock cavities or caverns with respect to their size and shape?

The range of forms and sizes of cavities in rock is very big. Is there a classification scheme for rock cavities regarding their size and shape?

02 March 2021 4,511 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

What are the countries most affected by extreme rainfall as a result of climate change?

Increased heat, drought and insect outbreaks, all associated to climate change, have increased wildfires. Decreasing water supplies, declined agricultural yields, health impacts in cities owing to...

01 March 2021 7,168 9 View

Samples to study circular dichroism (chirality)?

I want to build a low-cost polarimeter to study circular dichroism (chirality). What type of samples can I use? I am looking for samples that can be found outside the laboratory.

01 March 2021 9,101 3 View

How to accurately quantify chitin?

Hi all, I have been working on the quantification of chitin in insect samples and feed for a while but I can notice that the quantification methods (e.g. exposure to HCl, NaOH, and weighing sample...

01 March 2021 1,843 2 View

What is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View