The notch in the sample affects the results of the impact test, thus it is necessary for the notch to be of regular dimensions and geometry. The size of the sample can also affect results, since the dimensions determine whether or not the material is in plane strain. This difference can greatly affect conclusions made.
At any point if you would like to enable touch screen functionality again, simply go back to the Device Manager, right-click HID compliant touch screen, and select Enable. Remember, you will be required to restart your PC to enable the touch screen functionality again.
If you have Windows 8.1: 1  Access the charms by touching or moving your pointer to the right edge of the screen. 2  Click or tap Settings, and then click or tap Change PC Settings. 3  Click or tap Privacy, and then turn off Let apps use my advertising ID for experiences across apps.