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2. Plastic weld non-destructive examination - Wikipedia

   en.wikipedia.org/wiki/Plastic_weld_non...

   Various forms of ultrasonic inspection are used for plastic welds. Plastics have higher attenuation and a lower sound velocity compared to metals which can make these techniques more challenging. [2] In 2010, a joint European project, TestPEP, was started to develop and validate ultrasonic NDE techniques on plastic welded pipe. [5]

3. Plastic welding - Wikipedia

   en.wikipedia.org/wiki/Plastic_welding

   Hot gas welding, also known as hot air welding, is a plastic welding technique using heat. A specially designed heat gun, called a hot air welder, produces a jet of hot air that softens both the parts to be joined and a plastic filler rod, all of which must be of the same or a very similar plastic. (Welding PVC to acrylic is an exception to ...

4. Laser welding of polymers - Wikipedia

   en.wikipedia.org/wiki/Laser_welding_of_polymers

   Depending on different interactions between laser and thermoplastics, four different laser welding techniques have been developed for plastic joining. CO 2 lasers have good surface absorption for most thermoplastics, hence they are applied for direct laser welding and laser surface heating. Through transmission laser welding and intermediate ...

5. Ultrasonic welding - Wikipedia

   en.wikipedia.org/wiki/Ultrasonic_welding

   Ultrasonic welding does not damage surface finish because the high-frequency vibrations prevent marks from being generated, which is a crucial consideration for many car manufacturers, . [10] Ultrasonic welding is generally utilized in the aerospace industry when joining thin sheet gauge metals and other lightweight materials.

6. NFL announces Walter Payton Man of the Year nominees for all ...

   www.aol.com/nfl-announces-walter-payton-man...

   Here is the full list of nominees for this year's Walter Payton Man of the Year Award: Arizona Cardinals: Trey McBride. Atlanta Falcons: Grady Jarrett. Baltimore Ravens: Roquan Smith.

7. Commodity plastics - Wikipedia

   en.wikipedia.org/wiki/Commodity_plastics

   Demand for plastic resins in Europe during 2017 as a percentage of total plastic demand. [1] A comparison of standard plastics, engineering plastics, and high-performance plastics Commodity plastics or commodity polymers are plastics produced in high volumes for applications such as packaging, food containers, and household products, including ...