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.
The Canada Revenue Agency (CRA) does not start processing Canadian income tax returns until the middle of February. No matter how early you file your income tax return, you will not be able to get information on the status of an income tax refund until the middle of March.or paper tax returns filed before April 15, wait four weeks before you check on your refund. For paper tax returns filed after April 15, wait six weeks before you check. Processing Times for Electronic Returns. Electronic (NETFILE or EFILE) returns can take as little as eight business days to be processed.