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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Flute Finish
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<blockquote data-quote="Bart B" data-source="post: 627633" data-attributes="member: 5302"><p>Edd asked me about my comment that V shaped flutes are weak at their bottom:</p><p>There's lots of materials with a slit in them but holes are put at each end so they don't tear further into the rest of the material.</p><p></p><p>The internet's full of data about such stuff. Read the part in the link below about the British Comet airplane with square window cutouts in the body and why they failed catastrophically but were fixed by making window cutouts with rounded corners that were much stronger.</p><p></p><p><a href="http://books.google.com/books?id=B2aAPVa1TloC&pg=PA6&lpg=PA6&dq=square+cutout+corner+fracture+metals&source=bl&ots=Awetv3p9vt&sig=yeFcZs3tM01HK2ZIWxtp_plhihQ&hl=en&sa=X&ei=Je9fT_uxAtTUiAKuv7mgBA&sqi=2&ved=0CCYQ6AEwAQ#v=onepage&q=square%20cutout%20corner%20fracture%20metals&f=false" target="_blank">Metal fatigue in engineering - Ralph Ivan Stephens, Henry Otten Fuchs - Google Books</a></p></blockquote><p></p>
[QUOTE="Bart B, post: 627633, member: 5302"] Edd asked me about my comment that V shaped flutes are weak at their bottom: There's lots of materials with a slit in them but holes are put at each end so they don't tear further into the rest of the material. The internet's full of data about such stuff. Read the part in the link below about the British Comet airplane with square window cutouts in the body and why they failed catastrophically but were fixed by making window cutouts with rounded corners that were much stronger. [url=http://books.google.com/books?id=B2aAPVa1TloC&pg=PA6&lpg=PA6&dq=square+cutout+corner+fracture+metals&source=bl&ots=Awetv3p9vt&sig=yeFcZs3tM01HK2ZIWxtp_plhihQ&hl=en&sa=X&ei=Je9fT_uxAtTUiAKuv7mgBA&sqi=2&ved=0CCYQ6AEwAQ#v=onepage&q=square%20cutout%20corner%20fracture%20metals&f=false]Metal fatigue in engineering - Ralph Ivan Stephens, Henry Otten Fuchs - Google Books[/url] [/QUOTE]
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