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.
You have a bit of leeway if you're self-employed; your tax return is due June 15. But if you owe any money for the 2013 tax year, it still has to be paid by the April 30 deadline. If you're the executor for the estate of a person who died in 2013, you may have to file a return for that individual, the CRA says.here's only one occasion in the spring that people dread more than cleaning day: the tax deadline. UPDATE: April 23 â The deadline for filing individual tax returns has been extended to May 5 after the Heartbleed bug led to a shutdown on the Canada Revenue Agency's website, CBC News reported.