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Charpy test sample with a notch. In mechanical engineering and materials science, a notch refers to a V-shaped, U-shaped, or semi-circular defect deliberately introduced into a planar material. In structural components, a notch causes a stress concentration which can result in the initiation and growth of fatigue cracks.
The square thread form is a common screw thread profile, used in high load applications such as leadscrews and jackscrews. It gets its name from the square cross-section of the thread. [ 1 ] It is the lowest friction and most efficient thread form, but it is difficult to fabricate.
A trowel is a small hand tool used for digging, applying, smoothing, or moving small amounts of viscous or particulate material. Common varieties include the masonry trowel, garden trowel, and float trowel. A power trowel is a much larger gasoline or electrically powered walk-behind device with rotating paddles used to finish concrete floors.
Using a try square to mark lines perpendicular to the edge. Using a try square to check if the full length of a board is square. The stock is usually held against the edge of the workpiece and either side of the tongue is then used as a straight edge for making a mark, or as a reference to check the accuracy of an angle. [7] [2]
With home prices still on the rise in every region of the U.S., 63% of homeowners say they’d rather remodel their homes than move to renovated homes, ...
You've heard it a million times: Eat fewer calories, lose weight. But what if you're in a calorie deficit—consuming fewer calories than you're burning—and still not losing?
One of the reasons why air fryers have exploded in popularity within the past decade is because they get meals on the table fast. Compared to the time spent waiting for a full-sized oven to ...
Pool trowel or round trowel: a variation of the concrete finishing trowel; rounded blade prevents it from digging into wet concrete. Step trowel : similar to the corner trowel, it is used for shaping inside angles on concrete steps; the center of the 90-degree bend in the blade allows for rounded edges.