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Up Topic Welding Industry / Technical Discussions / Relation of Energy,wavelength and material(Laser processing)
- - By anay Date 06-21-2014 07:02
where can one find graphs/calculations/data of Energy & wavelength related to material mass(weight), material wavelength absorption to cut/burn/melt various metals,plastics etc. ?
Thanks in Advance
Parent - - By ssbn727 (*****) Date 06-21-2014 08:50
Try Googling it and see what you get.
Parent - By 46.00 (****) Date 06-21-2014 19:47
~No links?:grin::grin::grin::grin::grin::grin::grin::grin:
Parent - By OBEWAN (***) Date 06-21-2014 12:58 Edited 06-21-2014 16:45
This is a very complicated subject.  Are you intending to cut a new material with a process that has not yet been established?  Some of the LASER suppliers might be able to help you out.

Otherwise, if you have access to inter-library loans there might still be a book in the Library of Congress with some of the data you are looking for.  I found a copy of a text that was published by the Air Force Research Lab.  That is all I have to say about it - it was about 10 years ago though, so the title remains a bit fuzzy today.

There is no simple answer.  The book was about 450 pages long.   The bottom line is that for some metals, the vapor boiling out of the weld or cut will reflect energy back from the beam, thus reducing efficiency.

Cross jet flows will remove the vapor cloud and possibly improve the beam efficiency, but this method probably works better for cutting than welding processes since most laser welds must be protected from the atmosphere.

What is the practical take-away?  Be sure that your LASER has sufficient power to support the material(s) and thicknesses you intend to work with.

Some LASER suppliers will process sample welds in their lab if you are seriously in the market for new equipment.
Parent - - By electrode (***) Date 06-21-2014 15:52
I wish to agree with OBEWAN.
"There is no simple answer"; though he has already provided you with some valuable advice.

Beyond that I myself would recommend:

John C. Ion, 2005
Laser Processing of Engineering Materials
ELSEVIER Butterworth Heinemann

When it came to practical; i.e. application questions this compendium proved always helpful - at least to me.

Another one stored in my little personal library - used when it comes to more theoretical/quantitative questions:

N. Rykalin; A. Guglov; I. Zuev and A. Kokora, 1988
Laser and Electron Beam Material Processing Handbook (English Version)
MIR Publishers Moscow

For me both is definitely recommendable, since covering a wide spectrum in laser technology.
Parent - - By ssbn727 (*****) Date 06-22-2014 00:02
"where can one find graphs/calculations/data of Energy & wavelength related to material mass(weight), material wavelength absorption to cut/burn/melt various metals,plastics etc. ?"

Those are some excellent recommendations Electrode...

Here are some that I dug out from my own EPUB collection:

"Laser Processing of Materials - Fundamentals, Applications and Developments, Peter Schaaf."

http://books.google.com/books?id=HgKmYmlMkyoC&dq=Laser+Processing+of+Materials+-+Fundamentals,+Applications+and+Developments,+Peter+Schaaf&source=gbs_navlinks_s

http://books.google.com/books?id=HgKmYmlMkyoC&printsec=frontcover&dq=Laser+Processing+of+Materials+-+Fundamentals,+Applications+and+Developments,+Peter+Schaaf&hl=en&sa=X&ei=5w-mU6yIO4WTyAT3tIDQCg&ved=0CB4Q6AEwAA#v=onepage&q=Laser%20Processing%20of%20Materials%20-%20Fundamentals%2C%20Applications%20and%20Developments%2C%20Peter%20Schaaf&f=false

"Laser processing of engineering materials: principles, procedure and industrial application, John Ion."

http://books.google.com/books/about/Laser_Processing_of_Engineering_Material.html?id=eV7o7F2MYUUC

http://books.google.com/books?id=eV7o7F2MYUUC&printsec=frontcover#v=onepage&q&f=false

"Laser Fundamentals, William T. Silfvast."

http://books.google.com/books?id=x3VB2iwSaxsC&printsec=frontcover&dq=Laser+Fundamentals,+William+T.+Silfvast&hl=en&sa=X&ei=Qg6mU5KVJ8KmyASC54HQDA&ved=0CCcQ6AEwAA#v=onepage&q=Laser%20Fundamentals%2C%20William%20T.%20Silfvast&f=false

http://books.google.com/books?id=x3VB2iwSaxsC&dq=Laser+Fundamentals,+William+T.+Silfvast&source=gbs_navlinks_s

"Industrial Applications of Lasers, John F. Ready."

http://books.google.com/books?id=0BcKegyk87IC&printsec=frontcover&dq=editions:EWz-smCKlpAC&hl=en&sa=X&ei=Ow2mU9OFIZKGyAS1x4LgAw&ved=0CBwQ6AEwAA#v=onepage&q&f=false

http://books.google.com/books?id=0BcKegyk87IC&dq=editions:EWz-smCKlpAC&source=gbs_navlinks_s

"The theory of laser materials processing: heat and mass transfer in modern technology, John Michael Dowden."

http://books.google.com/books?id=IxgX9S1FieAC&dq=The+theory+of+laser+materials+processing:+heat+and+mass+transfer+in+modern+technology,+John+Michael+Dowden.&source=gbs_navlinks_s

http://books.google.com/books?id=IxgX9S1FieAC&printsec=frontcover&dq=The+theory+of+laser+materials+processing:+heat+and+mass+transfer+in+modern+technology,+John+Michael+Dowden.&hl=en&sa=X&ei=dQWmU92kOcGuyAS7v4DYDA&ved=0CCMQ6AEwAQ#v=onepage&q&f=false

Here are some links that could be helpful:

http://chemistry.about.com/od/workedchemistryproblems/a/Energy-From-Wavelength-Example-Problem.htm

http://www.wickedlasers.com/laser-tech/dummies.html

http://www.photonics.com/EDU/Handbook.aspx?AID=25043

http://books.google.com/books?id=eV7o7F2MYUUC&pg=PA172&lpg=PA172&dq=laser+processing+charts&source=bl&ots=UxGFdD7wJk&sig=roHmU3xIVzrki9NCIOw8cl2eJNw&hl=en&sa=X&ei=NtilU5r7KY6uyASKzILoBQ&ved=0CDAQ6AEwBQ#v=onepage&q=laser%20processing%20charts&f=false

http://file.scirp.org/Html/23809.html

http://ehs.ucr.edu/laser/wavelength.html

This is from Princeton U and even though it doesn't have a chart per se, the references @ the end of the article does have some good book references starting
on page 117(27 of 30)...

https://www.princeton.edu/~spikelab/papers/book02.pdf

More calculators:

http://www.eccosorb.eu/frequency-wavelength-calculator

From the Indian Institute of Technology:

http://www.me.iitb.ac.in/~ramesh/ME677/lasercutting.pdf

This is from Photonics.com which covers the latest on light research and applications from Photonics Media:

http://www.photonics.com/Default.aspx

http://www.photonics.com/WhitePaper.aspx?WPID=21

http://www.photonics.byu.edu/WavelengthChart.phtml

http://www.photonics.com/EDU/Handbook.aspx

Here's a blog where you can ask the kind of questions related to your application:

http://www.ophiropt.com/blog/laser-measurement/wavelength-guide-for-thermal-laser-power-sensors/

Here's a link where you could possibly find what you're looking for:

http://www.repairfaq.org/sam/laserfaq.htm#faqtoc

http://www.repairfaq.org/sam/laserioi.htm#ioicav3

And here's a very basic laser learning course:

https://spie.org/Documents/Publications/00%20STEP%20Module%2002.pdf

More books:

"Lasers and Electro-optics: Fundamentals and Engineering, Christopher C. Davis."

http://books.google.com/books?id=B132AgAAQBAJ&dq=Lasers+and+Electro-optics:+Fundamentals+and+Engineering,+Christopher+C.+Davis&source=gbs_navlinks_s

http://books.google.com/books?id=B132AgAAQBAJ&printsec=frontcover&dq=Lasers+and+Electro-optics:+Fundamentals+and+Engineering,+Christopher+C.+Davis&hl=en&sa=X&ei=kgamU-SXL8KxyAT7zIEo&ved=0CDAQ6AEwAA#v=onepage&q=Lasers%20and%20Electro-optics%3A%20Fundamentals%20and%20Engineering%2C%20Christopher%20C.%20Davis&f=false

"Physics of Laser Materials Processing: Theory and Experiment, Gennady G. Gladush, Igor Smurov."

http://books.google.com/books?id=-ny_BUmCk1sC&dq=Physics+of+Laser+Materials+Processing:+Theory+and+Experiment,+Gennady+G.+Gladush,+Igor+Smurov.&source=gbs_navlinks_s

http://books.google.com/books?id=-ny_BUmCk1sC&printsec=frontcover&dq=Physics+of+Laser+Materials+Processing:+Theory+and+Experiment,+Gennady+G.+Gladush,+Igor+Smurov.&hl=en&sa=X&ei=hRCmU_jLJYasyAT6x4HQCQ&ved=0CB4Q6AEwAA#v=onepage&q=Physics%20of%20Laser%20Materials%20Processing%3A%20Theory%20and%20Experiment%2C%20Gennady%20G.%20Gladush%2C%20Igor%20Smurov.&f=false

"This one can be a tad bit shocking and explosive:lol::twisted::wink:: "Dynamic Behavior of Materials M.A. Meyers."

http://books.google.com/books?id=WoEDHtRTOhoC&dq=Dynamic+Behavior+of+Materials+M.A.+Meyers.&source=gbs_navlinks_s

http://books.google.com/books?id=WoEDHtRTOhoC&printsec=frontcover&dq=Dynamic+Behavior+of+Materials+M.A.+Meyers.&hl=en&sa=X&ei=JBGmU7fKFo6VyASqnIHABQ&ved=0CDcQ6AEwAA#v=onepage&q=Dynamic%20Behavior%20of%20Materials%20M.A.%20Meyers.&f=false

"The Physics of Vibrations and Waves, H. J. Pain."

http://books.google.com/books?id=MqjuQt4qkjAC&dq=The+Physics+of+Vibrations+and+Waves,+H.+J.+Pain&source=gbs_navlinks_s

http://books.google.com/books?id=MqjuQt4qkjAC&printsec=frontcover&dq=The+Physics+of+Vibrations+and+Waves,+H.+J.+Pain&hl=en&sa=X&ei=ZgumU466F8-byATmr4GoCg&ved=0CDUQ6AEwAA#v=onepage&q=The%20Physics%20of%20Vibrations%20and%20Waves%2C%20H.%20J.%20Pain&f=false

"Wave Optics, R. K. Verma."

http://books.google.com/books?id=uuzPcVS_dc0C&dq=Wave+Optics,+R.+K.+Verma&source=gbs_navlinks_s

http://books.google.com/books?id=uuzPcVS_dc0C&printsec=frontcover&dq=Wave+Optics,+R.+K.+Verma&hl=en&sa=X&ei=5QqmU5uSKJCGyASdl4KoBw&ved=0CBwQ6AEwAA#v=onepage&q=Wave%20Optics%2C%20R.%20K.%20Verma&f=false

"WAVE OPTICS, Suresh Garg, Sanjay Gupta, C. K. Ghosh."

http://books.google.com/books?id=nYahH9mgq8cC&dq=WAVE+OPTICS,+Suresh+Garg,+Sanjay+Gupta,+C.+K.+Ghosh.%22&source=gbs_navlinks_s

http://books.google.com/books?id=nYahH9mgq8cC&pg=PR2&dq=WAVE+OPTICS,+Suresh+Garg,+Sanjay+Gupta,+C.+K.+Ghosh.%22&hl=en&sa=X&ei=UwqmU5K4CY6wyATlloLIBg&ved=0CCkQ6AEwAA#v=onepage&q=WAVE%20OPTICS%2C%20Suresh%20Garg%2C%20Sanjay%20Gupta%2C%20C.%20K.%20Ghosh.%22&f=false

"Principles of Laser Materials Processing, Elijah Kannatey-Asibu, Jr."

http://books.google.com/books?id=8WvWV7237UAC&dq=%22Principles+of+Laser+Materials+Processing,+Elijah+Kannatey-Asibu,+Jr.%22&source=gbs_navlinks_s

http://books.google.com/books?id=8WvWV7237UAC&printsec=frontcover&dq=%22Principles+of+Laser+Materials+Processing,+Elijah+Kannatey-Asibu,+Jr.%22&hl=en&sa=X&ei=1gmmU8ShM8yZyASDu4HYBQ&ved=0CCkQ6AEwAA#v=onepage&q=%22Principles%20of%20Laser%20Materials%20Processing%2C%20Elijah%20Kannatey-Asibu%2C%20Jr.%22&f=false

There are so many more I can suggest but I'll just end with this one: "Understanding solids: the science of materials, Richard J. D. Tilley."

http://books.google.com/books?id=_MGiC6d6ys4C&dq=Understanding+solids:+the+science+of+materials,+Richard+J.+D.+Tilley.&source=gbs_navlinks_s

http://books.google.com/books?id=_MGiC6d6ys4C&printsec=frontcover&dq=Understanding+solids:+the+science+of+materials,+Richard+J.+D.+Tilley.&hl=en&sa=X&ei=txGmU5GjF8q2yATc1oCgDA&ved=0CDAQ6AEwAA#v=onepage&q=Understanding%20solids%3A%20the%20science%20of%20materials%2C%20Richard%20J.%20D.%20Tilley.&f=false

Well, that's about all I'm going to post so I hope it helps you to at the very least, gain more knowledge of laser processing and lasers in general... Enjoy!:lol::wink::cool:

Respectfully,
Henry
Parent - - By 46.00 (****) Date 06-22-2014 05:23
Have you read all these books Henry?
Parent - By ssbn727 (*****) Date 06-23-2014 07:19 Edited 06-23-2014 07:39
No... Just 6 of them so far... I'm reading the rest of them when I can.
Parent - - By electrode (***) Date 06-22-2014 08:59
"Those are some excellent recommendations Electrode..."

Ditto ... 'Ship Submersible Ballistic Nuclear 727'.

It would baffle me if that would not keep the OP reading for a while.

As an aside.
The world wide web and along with it the high amount of E-Publications is certainly beneficial.
I myself need to admit however to belong to the most likely disappearing group of fellows which needs the haptic experience of thumbing through a "real" book. Don't know how many electronic files, papers and publications I have found over the years on the web, quickly scanning them for storing them (for the best) on my hard drive. Sure this is the same with you, certainly even outperformed by yourself.

Nonetheless at the end of the day I could find myself incapable of relocating the right one in case of really needing it.
I found myself returning thus to order and pay for printed publications (or at least print the papers out) which - as a very welcome side effect - proved preserving my already blood-shot and - unfortunately - flagging eyes.
Parent - - By ssbn727 (*****) Date 06-23-2014 07:34 Edited 06-23-2014 07:38
It sure can be problematic if one doesn't keep the filing system they choose in order and without deviation... I personally use separate external hard drives to store the E-PUB's .pdf's and any other digital format so that they don't get mixed up with what I usually have in either one of my desktops or my laptops as well...

Any music or movies are stored separated also in a different hard drive that can hold greater capacity (4Tb) with each file anywhere format least 1 Gb to the largest one so far being 44Gb... Yes indeed!  One must be very vigilant in assuring that their filing system is in order and working as efficient as can be... It's definitely something not to become complacent with as I have experienced when I first started organizing my digital content... Those days were very confusing and complicated as opposed to the K.I.S.S method I use currently...:grin:

Having said that, I still keep my printed books at the ready for quick and easy access when I'm @ home... So much to learn and so little time left to take it all in.:roll:

Respectfully,
Henry
Parent - - By electrode (***) Date 06-23-2014 09:11
"So much to learn and so little time left to take it all in."
So true...

And, to me at least, as it was in the beginning, it is now and ever shall be:
An answer given is always the most efficient, most reliable and most fascinating question generator.
Parent - By 46.00 (****) Date 06-23-2014 10:43
So True!
Up Topic Welding Industry / Technical Discussions / Relation of Energy,wavelength and material(Laser processing)

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