1 Yield strength is the lowest stress that produces a permanent deformation in a material. 2  In some materials, like aluminium alloys, the point of yielding is difficult to identify, thus it is usually defined as the stress required to cause 0.2% plastic strain. 3  This is called a 0.2% proof stress.
This year's deadline to file your personal income tax return is midnight on May 5 â five days later than the usual Apr. 30 cutoff. You can thank that nasty Heartbleed computer bug for the extension, after it forced the Canada Revenue Agency to shut down its E-File system earlier in April.his year's deadline to file your personal income tax return is midnight on May 5 â five days later than the usual Apr. 30 cutoff. You can thank that nasty Heartbleed computer bug for the extension, after it forced the Canada Revenue Agency to shut down its E-File system earlier in April.
All this moving of dates means that for individuals in 2016, your deadlines for filing your taxes are Monday, April 18th, 2016 and Tuesday April 19th 2016 for Maine and Massachusetts residents.Of course, you can file your taxes long before April.voiding the Deadlines. All this moving of dates means that for individuals in 2016, your deadlines for filing your taxes are Monday, April 18th, 2016 and Tuesday April 19th 2016 for Maine and Massachusetts residents. Of course, you can file your taxes long before April.