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.
If you're expecting a tax refund, you will not face any late tax return filing penalties from the IRS, but you must file your return within 3 years of the original tax return due date in order to claim your refund. The 2015 Federal and State Tax Deadlines (for Tax Year 2014) are on the table below.Tax Day DateType of Income Tax ReturnFiling Deadline / Due Date Description April 15, 2015 2014 Federal Tax Return Tax Day for Tax Year 2014 - Filing deadline and due date for Federal Income Tax Returns.ctober 15, 2015 2014 Federal Tax Return Last day to efile a 2014 Federal Income Tax Return for Tax Extension filers. April 15, 2018 2014 Tax Amendment You can file an Amended Return to pay taxes due anytime, but you generally have a deadline of 3 years from the original due date to claim a tax refund.