The Mean Linear Intercept Method Explained

In this video, Industrial Lecturer Dr Michael Shakib talks about the mean linear intercept method for grain size analysis with reference to BS EN ISO and ASTM standards. He explores the underlying principles by using a manual approach and talks about limitations to the method. Mike will be making a future video on using ImageJ to make things a little easier.
The Mean Linear Intercept Method Explained: • The Mean Linear Interc...
The Mean Linear Intercept Method Using Powerpoint: • The Mean Linear Interc...
The Mean Linear Intercept Method Using ImageJ: • The Mean Linear Interc...
More info on polishing and etching: • Properties and Grain S... --------------------------------------------------------------
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[@Mohdgaab]

That is a really fantastic video, I really appreciate that. Thank you Dr. Michael

[@briandacruzsanchez2301]

thank you so much for this information, it's very useful and your way to explain is excellent, greetings from Mexico!

[@georgeenglish6101]

What a really clear video, many thanks for sharing and taking the time Dr. Michael.

[@SUMMTraining]

Thanks for watching. We're glad you enjoyed it!

[@peterndungu3615]

I have definitely got something from the video...why do you have very few subscribers? You have such nice content.

[@energiam880]

Thanks very much for this! Was using this to characterize grain structure of Babbitt (tin alloy) fabricated by Liquid Forging, and compared it with TIG based additive manufacturing of the same material!

[@everything483]

Great teacher Great video 👍

[@mukeshmaharjan9449]

Great Video ! I appreciate a lot, thank you !!!

[@SUMMTraining]

Glad it was helpful!

[@Pengochan]

The difference you got in the two methods results from counting the leftmost grain as 1 in the intercept method, when it should've been counted as 0.5. In the Intersect method it was assumed that the left end of the line ends in that grain. If there was another intersect at the left, then that would add 1 in the intersect method and also in the intercept method, since then the line ends in the next grain i.e. the 0.5 becomes a 1 and theres another 0.5. If the line ends exactly on a grain boundary, then in the intercept method that first grain is counted 1 and there's no 0.5 for the line ending within a grain, and in the intersect method the first cut should be weighed with 0.5 to make it consistent. The 1.5 for a triple point in intersect is consistent with going through one more grain and an added tangential in intercept. So if a triple point in intersect is classified as tangential to one of the three grains in intercept the results should match.

[@karousel734]

Metal for life🤘🤘🤘

[@clearheartboy777]

what if we want to use for dendrites? like eutecitc snBi microstructure and want to study phase size distribution. I'll be really thankful if you could help

[@nasrineboualem458]

Thank you

[@Jstrndm]

hey can you give me the litterature or source to me? because i never find linear method for intercept

[@Jstrndm]

i got sorry, thanks

[@anasbassam2182]

is this method for single phase and two phase ? or there are methods for two phase ?

[@michaelshakib7777]

Only for single phase. There are methods for two phase written in the standards.

[@AMVCreativity]

@@michaelshakib7777 coudn't find one even the E1881 doesn’t apply for my case (ferrite and carbides)

[@thawcho4249]

can I use this method in zirconia grain size measuremnt?

[@thawcho4249]

for ceramics

[@michaelshakib7777]

If the grains are clear, and it is single phase then yes.

[@karousel734]

You should teach u are awesome